SEPARATOR, MANUFACTURING METHOD THEREOF, AND BATTERY USING SAME

02-11-2016 дата публикации
Номер:
KR1020160126961A
Принадлежит:
Контакты:
Номер заявки: 01-16-102040417
Дата заявки: 26-10-2016

[1]

The present invention refers to isolation, and battery using the same manufacturing method thereof relates to.

[2]

Separator for electrochemical (separator) supports an anode and a cathode in a battery while isolated from each other maintains ionic conductivities of the plural shapes are cell charging and discharging the. of the thin film transistors. Recent electronic apparatus the body of an electrochemical height and small the weight of the reuseable battery by and patterned with, simultaneously with this high capacity battery and for the production of electrolyte permeable, as well as mechanical strength, shape stability by heat, shrinkage, of microscopic, melt down characteristics and so forth is is required.

[3]

The, and extend, and separating film shrinkage during overheating due to short positive electrode and the negative electrode to solve as an instrument for breaking polyolefin porous substrate film, superimposed on at least one surface is coated with inorganic particles and an organic binder blend isolation is improved in heat resistance be oil/inorganic composite separator is number was should not (25th which registration patent number 10 - 0727248 call).

[4]

Oil/inorganic composite coating layer the mono-layered film with a polyethylene, XLPE, based of a dump truck including isolation, it is intended to increase the heat resistance can be degraded and, thermostable layer coating said polyethylene based organic binder polymer strength as compared and from antenna, since the binder above base film and, down to the next step through sacrificial base film.

[5]

The polyolefin resin is contribute to an increase in rigidity but an external case is used as the, cannot then of melting organic solvent at room temperature, heat resistance not a coating applied to the top ply of the door which is difficult to there has been a number. Polyolefin resin axis rate of heat shrinkage of base film including thermally for improving increase the time for exposure with said polyethylene base film when the melting temperature of which are reduced in heat shrinkage at high temperature table and physically severe productivity isolation durability occurs is number door.

[6]

Thus, suitable strength and heat resistance which is satisfactory in simultaneously objects' traces to required isolation layer is formed.

[7]

25th which registration patent number 10 - 0727248 call (2007. 06. 11 notification)

[8]

If the second voice is inputted, the present invention wire has number and/inorganic coating layer excellent in air permeability and storage amount electrolyte, and is indicative of the intensity of suitable resultant structure in order to, isolation improved thermal contraction the recording operation. under public affairs number.

[9]

The present invention if the second voice is inputted, an electrolyte solution has number and other heat resistance of an oxetane compound and resultant structure in order to pouring concrete and by forming a proper tensile strength through isolation has a thickness and thermal conductive material and a high-output improved and cycle characteristics the recording operation. under public affairs number cell.

[10]

In the present invention and is indicative of the intensity of suitable resultant structure in order to, extrusion, of an oxetane compound and electrolyte to improve the heat resistance, includes porous polyolefinic plurality, said polyolefin porous film of each composition, form a hydrothermal control-thickness ratio of about content and with improved isolation and a venting axis rate. under public affairs number.

[11]

Of the present invention according to one example, a, polyolefin number 2 number 1 polyolefinic is installed to one side kept porous polyolefin and a polyol includes porous number 3, said polyolefin number 1 number 3 polyolefin said polyfluoride porous and has an average primary particle diameter of 10 to 100 nm in which each contain inorganic particles, said porous polyolefin number 1, number 2 and number 3 polyolefin said porous polyolefin said kept a-thickness ratio of about 0. 5 to 1. 5:1 to 6:0. 5 to 1. 5 and, 1 in 120 °C measured after size machine direction thermal contraction (MD, Machine Direction) and orthogonal (TD, Transverse Direction) each is 5% hereinafter, air permeability 250 sec/100 cc hereinafter in, polyolefin porous separation membrane for number. under public affairs.

[12]

Another according to one example, a of the present invention, polyolefin resin composition and a plasticizer by extruding kneading number melting cooling the solidified sheet polyolefin the under trillion number on both sides kept porous polyolefin number 1 number 2 number 3 is formed each porous polyolefin and a polyol, polyolefin said porous polyolefin said polyfluoride number 1 and number 3 has an average primary particle diameter of 10 to 100 nm in which each contain inorganic particles, said porous polyolefin number 1, number 2 and number 3 polyolefin said porous polyolefin said kept is-thickness ratio of about 0. 5 to 1. 5:1 to 6:0. 5 to 1. 5 in, number of. under public affairs polyolefin porous separation membrane of manufacturing method.

[13]

Another according to one example, a of the present invention, anode, cathode, and an electrolyte includes, said interposed between the positive electrode and the negative in electrochemical cell including a porous separation membrane, according to one example of the present invention of a dump truck said isolation number by one example of the present invention or other isolation layer is prepared by the method a, . under public affairs number electrochemical cell.

[14]

Porous number 1 the porous separation membrane according to one example of the present invention, porous number 2, number 3 porous membrane sequentially stacked is a multilayer polyolefinic porous includes appropriate with, and are connected with the electrodes of tensile strength and which exhibits high adhesive force may be sufficient as well as, porous polyolefin including said inorganic particles polyfluoride number 3 and number 1 number 2 kept on both sides are formed in each of, can be is improved in heat resistance isolation.

[15]

Specifically, on each one of a containing polyolefinic resin molecular weight and polydispersity of the controlling the content the existing isolation compared to fabric while being capable of effectively strength, the same type of sensor, the containing polymers porous layer by the method is characterized in that, each, may be enhanced than excellent air permeability, and thus is a contact point is turned off.

[16]

According to one example of the present invention stacked of a dump truck porous membrane plurality of tensile strength and heat resistance improved tensile of the anode panel productivity cell accordingly ensuring high speed winding assembly for improving the stability and battery as well as may be, thickness of each layer properly controlled to proceed treatment of leftover, electrolyte permeable, heating compression before and after the tone to minimize changes of properties, reduces the deformation of the isolation according to a charge rate of a battery during the high output and battery improved in cycle characteristics which can attain contact point is turned off.

[17]

In addition, heat resistance using polyolefin resin instead binder resin with a high level of heat resistance levels of rigidity, not to request request to the field, which can be applied to useful, a separate coating the content of the cross-linking process is simplified can be.

[18]

Hereinafter, . as further described relative to the present invention. The present specification is not described of the present invention the contents is a classic mirror server, in particular in the fields of art or similar sufficiently recognize and deducing the graphitic surface can be ., which does not require a an annealing process is the explanation.

[19]

According to one aspect of the present invention number 1 porous polyolefin porous separation membrane polyolefin, polyolefin number 2 number 3 includes porous porous polyolefin and a polyol.

[20]

The present specification in "polyolefin" porous separation membrane polyolefin resins coating film made from. the separator.

[21]

Said "polyolefin resin composition" including polyolefin resin initiator composition, said composition for example, polyolefin resin composition based on the total weight polyolefin resin can 50 weight % or more. I.e., polyolefin resin liquid or polyalkylene glycol polyolefin resins and a number for a polyolefin resin compatible external grudge is made of a different resin (e.g.; polyamide (Polyamide, PA), polyvinylidene fluoride-(Polyvinylidene fluoride, PVdF), polycarbonate (Polycarbonate, PC), polysulfone (Polysulfone, PSF), such as), may include a inorganic particles, and so forth.

[22]

The present-like low may poromeric organic polyfluoride polyolefin number 2. Polyfluoride organic said organic polymer resin, containing polyolefin resin specifically, if necessary may comprise an added other number. Polyfluoride number 2 further includes inorganic particles may not KIPO &.

[23]

Polyolefin number 1 number 3 and porous may poromeric inorganic polyfluoride. Inorganic polyfluoride polyolefin resin and inorganic particles may comprise an.

[24]

Specifically, polyolefin number 1 number 2 number 3 polyolefin and a polyol porous polyolefin said polyfluoride kept made on both sides, said porous polyolefin number 1, number 2 and number 3 polyolefin said porous polyolefin said kept a-thickness ratio of about 0. 5 to 1. 5:1 to 6:0. 5 to 1. Wednesday 5 which, polyolefin number 1 number 3 and porous film of the same thickness can be kept.

[25]

For example, porous polyolefin said number 1 and number 3 a respective thicknesses kept m and the shaft transfers the micro 15 to 1, more particularly 2 to 10 micro m can be.

[26]

In addition, polyolefin number 2 number 1 number 3 and porous polyolefin thickness kept kept which which may be the same or different thickness and, specifically, containing inorganic thickness kept number 2 number 1 and number 3 which the second insulatory may be thicker than porous, more particularly 1 to 20 micro m and the shaft transfers the, for example, micro m can be 2 to 15.

[27]

Said within the range, of an oxetane compound and an electrolyte solution suitable resultant structure in order to heat resistance as well as may be is, thickness before and after compression heating, change of property such as extrusion more nearly parallel to normal, minimizes according to a charge rate of a battery during isolation minimizes the deformation and extension of a cell high output and cycle characteristics stability of isolation signal to an analog second data signal the objective compound.. In addition, where strength tensile high speed winding at both sides of the battery productivity cell accordingly ensuring assembly capable of improving a contact point is turned off.

[28]

Polyolefin porous separation membrane of according to one aspect of the present invention formed on the 5 to 30 micro m which may be, specifically 5 to 25 micro m which may be, can be 10 to 25 micro m. Said overall within the range the cable can be maintained and strength, desired capacity of a battery by changing the may, conform to the terms of.

[29]

In addition, the porous separation membrane polyolefin according to one aspect of the present invention long-term preservation rate of change of film thickness expressed in 1 (T) is 20% hereinafter which may be, specifically, 18% hereinafter, which may be 16% hereinafter more particularly, for example, can be 15% hereinafter. In formula 1, T1thickness of the heating means before compression, T2the 2. 2 mpa 90 °C under pressure 5 in thickness of for compressing heating minutes( T2). mixture by the addition of an initiator.

[30]

[Type 1]

[31]

T=[T1-T2]/T1× 100

[32]

Said optimum charging by making a final charge electrode range heat and pressure and expands the hermetic space of the isolation by a membrane of a variation in the thickness more nearly parallel to normal, minimizes to prevent deterioration in cycle characteristics can be.

[33]

The present-like low porous separation membrane film thickness of the first substrate are assembled a measuring a rate of change in the number which reset one method, commonly used in various technical fields of the present invention, use can be made of, a method.

[34]

Isolation film thickness of a measuring a rate of change in the number of method include not limited to, an expanded: smooth surface each of isolation only a pair of press plate presses in order to drive them is interposed between the plurality of, install a punching ball and a die same 2. 2 MPa( 22 kgf/cm2)under pressure of, 5 minutes in 90 °C heating compressing the chromatic light film thickness (Litematic) thickness measuring apparatus (number width life: vL-50, number irradiation: [...]saturday) it was determined that using. Thickness before compression heatingT1, saidthickness after compression heatingT21 type on the film thickness of (T) calculates a rate of change of..

[35]

The porous separation membrane according to one aspect of the present invention 1 in 120 °C measured after size machine direction thermal contraction (MD, Machine Direction) and orthogonal (TD, Transverse Direction) each which may be 5% hereinafter, which may be 4% hereinafter specifically, can be 3% hereinafter more particularly.

[36]

In addition, after size 1 in 105 °C measured 0 each feeds in a direction perpendicular machine direction and thermal contraction. 1% hereinafter and the shaft transfers the, more particularly 0. 01% hereinafter can be. Said range, a overheating because of heat shrinkage of isolation, the rice transplanter is improved in resistance for drying by heat the insulating and the sound-KIPO &.

[37]

The present-like low porous separation membrane of the first substrate are assembled a heatable measuring the number one which reset method, commonly used in various technical fields of the present invention, use can be made of, a method.

[38]

Two patterns of the first method of a heatable measuring include not limited to, an expanded number: the gate isolation prepared by the method number (MD) longitudinal 50 mm × 50 mm (TD) at the point of two different 10 to tailor work grudge region and a 10 a then number two, said each specimen 1 105 °C each of oven of 120 °C and then the composition is left for time, each of a specimen MD direction and TD of a reduced a measure of the degree to which a heatable average reflect the size a calculated.

[39]

According to one aspect of the present invention that no temperature gradients occur inside the venting of porous separation membrane 250 sec/100 cc hereinafter and the shaft transfers the, specifically, can be 200 sec/100 cc hereinafter. In addition, said polyolefin porous separation membrane for 2. 5 minutes in 90 °C under pressure 2 mpa heating after compression which may be 500 sec/100 cc hereinafter air permeability measured, specifically 450 sec/100 cc hereinafter, can be for example 430 sec/100 cc hereinafter.

[40]

Said expansion cell when charging the cell housing at the within range the urging force of the extrusion for resistant cursor in cycle characteristics can be improved and, excellent air permeability as well as the electrolyte is sufficiently impregnated can be can be improving quality and initial efficiency of battery.

[41]

The present-like low method measuring the air permeability of porous separation membrane of the present invention in a method commonly used in various technical fields can be using, constitution number not limited to, an expanded non method include: two different 5 at the point of cutting a 5 region and a number two work grudge then, measuring device (asahitax nose yarn) extrusion using 1 inch in diameter in an specimen each said isolation layer is formed circular area 100 cc air can permeate carbon at or five times each mean time includes a thin film transistor connected to the second light drop unit drops part calculates a mean value the measure the air permeability.

[42]

In addition, according to one aspect of the present invention and the tensile strength of the porous separation membrane machine direction and feeds in a direction perpendicular900 kgf/cm2least, specifically in each direction1,000 kgf/cm2may be or more, more particularly in each direction1,100 kgf/cm2can be. Said winding process range sufficiently so that the antenna may be the display can be an elastic.

[43]

The present-like low porous separation membrane method for measuring the tensile strength of the first substrate are assembled which reset one number, commonly used in various technical fields of the present invention, use can be made of, a method. Method for measuring the tensile strength of said isolation non number not limited to, an expanded include: the gate isolation prepared by the method number (MD) longitudinal (TD) 10 mm × 50 mm rectangular-formed at the point of two different 10 to tailor then work grudge number region and a two 10 a, each said UTM specimen (tension tester) to 20 mm length to a DC through the converter so that said specimen after physical machine direction and pulled direction normal to rolling direction is not measure the average tensile strength.

[44]

According to said one aspect of the present invention 18 °C polyolefin porous separation membrane for 60 minutes of the electrolyte to an electrolyte solution measuring of immersing a porous separation membrane polyolefin storage amount may be 300 mg or more per 1 g, specifically 310 mg may be or more, for example, at least 320 mg.

[45]

In addition, said polyolefin porosity of the electrolyte 60 minutes to 18 °C of immersing a measured long-term preservation of porous separation membrane polyolefin said 2 which appear as-absorptive speed ratio is 1. 5 at least.

[46]

[Type 2]

[47]

Non-absorptive( A)=[A1/A2]

[48]

In said type 2, A1the number 1 to number 3 including porous polyolefin porous separation membrane 1g and storage amount electrolyte per, A2the polyolefin resin containing an inorganic particle Image without limiting a isolation is storage amount of the electrolyte.

[49]

Said electrolyte within the range an improved absorption speed high output cell can be corresponding to and cycle characteristics.

[50]

Said isolation and storage amount of the electrolyte for measuring the speed ratio number which reset the first substrate are assembled one method, commonly used in various technical fields of the present invention, use can be made of, a method.

[51]

According to one aspect of the present invention polyolefin porous separation membrane of the electrolyte storage amount and method for measuring the speed ratio number not limited to, an expanded non include: an electrolyte solution keeping warm to 18 °C each of isolation (electrolyte: LiBF4, the electrolyte concentration: 1 mo1/L, solvent: propylene carbonate) impregnating the fabric with an time 1 and bonding a separating film onto the, sample by the increase in mass per unit mass storage amount( A1)[film mass of increments before absorbent/film mass (mg) (g)]. calculates a.

[52]

The same said polyolefin resin polyols method contains inorganic particles a not polyolefin porous separation membrane (e.g.: compared e.g. 2) of the electrolyte storage amount( A2)measures the, for the each polyolefin porous separation membrane 2 type ratio-absorptive of detected to be added each other..

[53]

Continue to, porous polyolefin according to one aspect of the present invention number 1, number 2 and number 3 porous commonly polyfluoride may include polyolefin resin, polyolefin number 1 number 3 polyfluoride polyolefin and a polyol porous inorganic particles may further comprise the KIPO &.

[54]

[55]

Hereinafter, manufacturing method of porous separation membrane polyolefin according to one aspect of the present invention relative to. specifically, .

[56]

Manufacturing method of porous separation membrane polyolefin according to one aspect of the present invention a polyol polyolefin resin composition and a plasticizer to form the sheet number, and form the stretching the sheet said, said plasticizer includes extracting number.

[57]

First, polyolefin resin compositions specifically, .

[58]

Polyolefin resin liquid or polyalkylene glycol which may contain polyolefin resin, inorganic particles as needed can is electrically connected with the. In addition, in addition to polyolefin resin and compatible is made of a different resin can together.

[59]

Polyolefin resin

[60]

Polyolefin resin is a copolymer of or alone can be. To a polyolefin resin non limited number may be, for example, polyethylene (Poly ethylene, PE), polypropylene (Polypropylene, PP) or - 4 - methyl - 1 - pentene (poly-4-methyl-1-detects the synchronous signal, PMP) is to, more particularly, ultra high molecular weight polyethylene (Ultrahigh Molecular Weight Polyethylene, UHMWPE), high molecular weight polyethylene (High Molecular Weight Polyethylene, HMWPE), density polyethylene (High Density Polyethlylene, HDPE), low density polyethylene (Low Density Polyethlylene, LDPE), linear low density polyethylene (Linear Low Density Polyethylene, L-lDPE), high crystalline polypropylene (High Crystalline Polypropylene, HCPP) and polyethylene - propylene copolymer (polyethlylene-propylene copolymer) a selected from the group consisting of at least one 1 may include a.

[61]

Specifically, viscosity-average molecular weight of 100,000 to 900,000 g/mol (Mw) is in density polyethylene (High Density Polyethlylene, HDPE), viscosity-average molecular weight of 900,000 g/mol or more ultrahigh molecular weight polyethylene (Ultrahigh Molecular Weight Polyethylene, UHMWPE) and polypropylene (Polypropylene, PP) 1 selected from the group consisting of at least one inert gas.

[62]

Specifically, density polyethylene viscosity average molecular weight (Mv) which may be the 300,000 to 900,000 g/mol, more particularly 400,000 to 900,000 g/mol and the shaft transfers the, for example, 400,000 to 800,000 g/mol can be.

[63]

The viscosity average molecular weight of ultra-high molecular weight polyethylene may be 1,000,000 g/mol or more, more particularly least 2,000,000 g/mol, for example, can be 5,000,000 g/mol to 2,000,000.

[64]

In addition, the present aspect external grudge number used instead of bits which can be used in limited number non is made of a different resin may be, for example, polyamide (Polyamide, PA), polybutylene terephthalate (Polybutylene terephthalate, PBT), polyethylene terephthalate (Polyethyleneterephthalate, PET), poly claw lot ripple base Oro ethylene (Polychlorotrifluoroethylene, PCTFE), polyoxymethylene (Polyoxymethylene, POM), poly [...] (Polyvinyl fluoride, PVF), polyvinylidene fluoride-(Polyvinylidene fluoride, PVdF), polycarbonate (Polycarbonate, PC), polyarylate (Polyarylate, PAR), polysulfone (Polysulfone, PSF), polyether-imide (Polyetherimide, PEI) as to the aromatic hydrocarbon KIPO &. They are 2 be used alone or in at least one can be is used mixed.

[65]

More particularly, according to one aspect of the present invention high density polyethylene or said each two patterns of the first polyolefin polyfluoride alone contain or that said ultrahigh molecular weight polyethylene, said density polyethylene, said ultra high molecular weight polyethylene, containing-propylene-mixing can be 2 or more, polyolefin number 1 number 3 to porous in porous membrane containing polyolefinic resin may be the same or. may be different from the user.

[66]

The present-like low polyolefin resin content of polyolefin resin composition and a plasticizer including a number in relation to the total weight composition for forming porous film of the it was determined that content.

[67]

Said polyolefin number 1 and number 3 of the present invention one-like low composition for forming porous film of a reference total weight polyolefin the high density polyethylene said number 1 and number 3 in each in porous membrane 1 to 50 weight % may be contained to, specifically 1 to 40 weight % can be containing.

[68]

In addition, the high density polyethylene polyolefin number 2 in porous membrane 5 to 70 weight % may be contained to, specifically, 5 to 50 weight % can be containing.

[69]

In addition, polyolefin number 1 number 3 and porous porous a reference total weight composition for forming porous film of said ultra high molecular weight polyethylene in the polyolefin number 1 40 to 1% weight each in porous membrane number 3 and porous may be contained to, specifically 1 to 30 weight % can be containing.

[70]

In addition, polyolefin polyethylene microactuator attached to said 1 to 40 weight % in porous membrane number 2 may be contained to, specifically, 1 to 30 weight % can be containing.

[71]

Said resultant structure in order to within the range proper tensile strength and can also preserve a, according to heat and pressure to reduce such variations as in the isolation minimizes the deformation and extension of a can be enhancement of cycle characteristics and.

[72]

Porous polyolefin according to one aspect of the present invention number 1 for forming porous polyolefin and a polyol number 3 in an inorganic based resin composition and preparation and can comprise particles, number 2 for forming porous in an inorganic based resin composition and preparation and not containing a particle of a may be.

[73]

Inorganic particles

[74]

Said number, for example, not limited to, non of inorganic particles, silica( silica, SiO2), Al2O3, TiO2, ZnO, MgO, ZrO2, PbO, Bi2O3, MoO3, V2O5, Nb2O5, Ta2O5, WO3orIn2O3of the radioactive part into contact with such as, silica specifically, use can be made of, or alumina.

[75]

Said silica or alumina sol, liquid such as precipitation by silica or alumina, such as flame oxide (flame oxidation) produced by gas phase process may be silica or alumina, dry silica/alumina (fumed silica/alumina), fused silica/alumina (fused silica/alumina) may use the accessed local viewer preference those for which the spherical shape, crushed form, edge wireless (edgeless) which combination of the conductor type, alone or mixed with at least one 2, use can be made of, .

[76]

More particularly said silane-up of said organic - based inorganic particles hydrophobic surface treatment so as to can be degraded and the nanoparticles are utilized to, necessarily the number one are not.

[77]

In addition, porous polyolefin according to one aspect of the present invention number 1 number 3 in porous membrane contained in the polyolefin and a polyol has an average primary particle diameter of inorganic particles which may be the 10 to 100 nm, for example 15 to 100 nm and the shaft transfers the, said inorganic particles or porous polyolefin said number 1 number 3 polyolefin said total weight composition for forming porous film of a reference in each said polyolefin number 1 number 3 and 40 to 70 weight % porous in porous membrane can be containing.

[78]

Said terms "has an average primary particle diameter" primary particle average particle diameter of initiator, primary particle, groups, or with an, secondary particles of phenolic resins of the kind fine particles a unit particles to mixture by the addition of an initiator, each-particles are dispersed or agglomerate is emitted via the discharge port to the kind and that can be viewed. minimal particle diameter.

[79]

Said method has an average primary particle diameter for measuring the first substrate are assembled not one number, non include not limited to, an expanded number: scanning electron microscope (SEM, Scanning Electron Microscope) in isolation using it checks an average particle diameter of primary particles.

[80]

In addition, range do not compromise in-purpose of the invention, number antioxidant for example, thermal comfort number, chlorine acquisition number, antistatic number, bow number, an antiblock number, number adjusting viscosity, east preventing added various kinds of number forming a porous each number can be composition and.

[81]

[82]

Hereinafter, manufacturing method of porous separation membrane polyolefin according to one aspect of the present invention relative to. specifically, .

[83]

Polyolefin resin composition and a plasticizer by extruding kneading number melting cooling the solidified sheet number 1 number under trillion polyolefin the polyolefin to porous to form a porous includes number 3.

[84]

Melt blending polyethylene process

[85]

Polyolefin resin composition and a plasticizer the blending a melting number method known to one skilled in the art, use can be made of, .

[86]

Specifically, said plurality of method is used as an ion injection barrier extruder, other compositions polyolefin resin as needed in inserting an number added plasticizer while melt blending polyethylene in inserting an number may mixed to knead for having high said composition.

[87]

The present-like low according to one in the embodiment, after kneading melt based resin composition and preparation method, extruder for providing an extra number plasticizer may mixed to knead for having high hot-melt is melted or the outside.

[88]

In addition, the present-like low according to other in the embodiment, polyolefin resin compositions by adding a small fraction of an number plasticizer [...] mixer, night gate of the memory cell size and a light weight by S4 chloroprene mixer and a melt after pre-mixing an obtained in advance before kneading, extruder to knead for having high number United together through fusion is charged into the remaining plasticizer may, during the extrusion extra plasticizer further number in case that the KIPO &.

[89]

More particularly, polyolefin resin composition in the formation powder of an the event of the use of a inorganic particles, pre-mix method using by formed of inorganic particles, prevent for previnting a scattering of powder reducing the bulk density inorganic particles, and a bridge hopper, and the hopper moves number and for circuit controlling isolation gates of a direction of the central position is into the extruder process for the input of. hereinafter.

[90]

Further, premix and consequent failure a membrane during stretch high magnification through the contact point is turned off.

[91]

Polyolefin resin used in one aspect of the present invention may be used with specially include number plasticizer which one number at a temperature aluminum through extrusion reset said polyolefin resin for certain single phase and can be organic compound.

[92]

Limited number of number said plasticizer may be, for example, nonan (nonan), decane (decane), azadecalin (decalin), liquid paraffin (Liquid paraffin, LP) (or paraffin oil) flow such as paraffin, paraffin wax such as aliphatic or cyclic hydrocarbon; dibutyl phthalate (dibutyl phthalate, DBP), phthalate [...] phthalic acid esters such as (dioctyl phthalate, DOP); (palmitic acid) palmitic, stearic acid (stearic acid), (oleic acid) oleic, linoleic acid (linoleic acid), linolenic acid 10 to 20 carbons such as can (linolenic acid) of fatty acids; palmitic alcohol, stearic acid alcohol, oleic 10 to 20 carbons such as alcohol can of: such as fatty alcohol. They are 2 be used alone or in at least one can be is used mixed.

[93]

For example, number 1 [...] or paraffin flow during during phthalate plasticizer, use can be made of, or more. Flow paraffin the human body the reactions having a high boiling point in the process, and wet low highly volatile plasticizer number is used as an opening is formed at the film is made of a metal oxide.

[94]

The present-like low number plasticizer content of polyolefin resin composition and a plasticizer including a number in relation to the total weight composition for forming porous film of the content is..

[95]

Specifically, composition for forming porous film of number 1 to number 3 in a reference total weight, number 1 to number 3 90 to 20 weight % porous each may be included in an, specifically 30 to 80 weight % may be included in an, more particularly 40 to 80% weight body is included to the display apparatus KIPO &.

[96]

Extrusion andnumber membrane process

[97]

Then, the fed into composition melt blended with extruding in a sheet shape, cooling solid the polyolefin number 1 number 3 to porous porous membrane stacked gel sheet can be. At this time, number 3 to porous polyolefin number 1 kept the-thickness ratio of about can be control physical properties of isolation.

[98]

Stacked gel defines a seat for said plurality of extruder in method from a gel layer after to form a sealing seat, by numerous dies 160 to 250 °C one or co-extruded, each layer a gel sheet overlapped of body and the like heat sealability and adequate range of graft window is used as an ion injection method, the not one number.

[99]

Specifically, said pneumatic it will dance in a die one method of extruder in a plurality of formed from adhesive into separate die, sheet, plurality manifold method, using feedblock and attached, at this time, die die T, coat hanger die wt %% of a glycol ether can be methods using a die.

[100]

The present-like low number not limited to, an expanded pneumatic it will dance non include: each kept composition quantify powder feeder (Feeder) for co-rotating twin screw 2 by (co-170 Twin screw) extruder feed portion to supply from, specifically as needed, additionally flow paraffin liquid injection to cylinder part/S09/Markov to a min be interpolated (Liquid injection) is feed using.

[101]

Each melt temperature of 220 °C [...] a gear pump is set to, polymer filter, via conduit 2 species compositions of a coextruded an absorbent comprising a sheet of a layer 3 T - 30 °C-exchanges the indoor temperature after die (Die) and cooling the roll [...] number to number 1 and number 3 porous surface layer of said porous sheet layer 3. under trillion a number.

[102]

Drawing process

[103]

Then, said solidified sheet performs process for. Number of porous separation membrane polyolefin according to one aspect of the present invention method bath before extraction number contain plasticizers, by conducting the process level of personal character assassination number plasticizer to a polyolefin resin by work stretch by softening unit produced according to the inventive method to be positioned in the opening..

[104]

In addition said due in elongation of the sheet the result, seat, for more number plasticizer can be authored in the first client by a number to hereinafter, manufactured by blowing air bubble due to in elongation can be formed.

[105]

Specifically, said solidified sheet longitudinal direction (Machine Direction, MD) and smaller (Transverse Direction, TD)/stretched in direction and can be manufactured, said orientation smaller longitudinal direction (uniaxial stretch) or stretched only a certain said longitudinal direction and a cross direction stretch of the both directions in both can be (biaxially stretched).

[106]

In addition, said biaxially stretched operating said solidified sheet longitudinal direction and a cross direction or priority or stretched simultaneously (smaller direction) stretching longitudinal direction, then cross direction (direction or species) can extend from about KIPO & in.

[107]

For example, said method biaxially stretched the drawing process may be performed in a, specifically roter biaxially stretched be by. Roter biaxially stretched when according pick, longitudinal direction and a cross direction in regulating the stretch magnification can be unit.

[108]

In addition, sheet toothing and the non - recessed areas of a grip by device gripping region than the a draw-down ratio between final stretched number in quality of a ensuring uniformity of the device toothing sheet can be arranged on the outside of the top separation of a fixed seat from production stability insulation layer is formed on the first contact point is turned off. Stretch said next, by using a suitably magnification and stretched of temperature a first switch can be actuated, according conditions similar to the rental conditions performed number bath at a lower portion can be varied from property..

[109]

Said drawing process the under temperature conditions of 100 to 130 °C and the shaft transfers the, specifically can be 100 to 125 °C. Said stretch without at break of sheet in a temperature range can be embodiment.

[110]

In addition, said stretch magnification in longitudinal direction is arranged in drawing process and/or in a lateral direction may bail 10 to 4. Specifically longitudinal direction and/or in a lateral direction can bail 8 to 4, said longitudinal direction and a cross direction stretch magnification may be identical to or can be different and can, specifically 30 to Wednesday 65 KIPO & cotton times rate.

[111]

Plasticizerprocess of the extraction of number

[112]

Ear drawing said plasticizer may extract the KIPO & number. Specifically, longitudinal direction and a cross direction stretched sheet number plasticizer plasticizer extraction device is immersed for number of organic solvent are extracted air knife (air knife) judged to be dried is dried through can be carried through in such a way that.

[113]

[114]

* Plasticizer which is used as an organic extraction number number one reset which especially solvent, plasticizer to extract the number if a solvent capable of. available any. Said organic solvent, in the non-extraction efficiency is high limited number may be, for example, easily and dried of methylene chloride, 1, 1, 1 - trichloro ethane, fluoro principally comprising aluminum of a halogen, such hydrocarbon current; n - hexane, hydrocarbons such as cyclohexane; ethanol, alcohols such as isopropanol; acetone, 2 - butane on such as ketones; which fixing, number plasticizer flow paraffin the desired program methylene chloride, use can be made of, with an organic solvent.

[115]

Number data for extracting plasticizer the organic solvent having a higher volatility and splitter is adverse, number and for circuit controlling isolation gates of size of the condenser by manufacturing the organic solvent if necessary by a water, use can be made of, .

[116]

Render the process

[117]

After extraction number plasticizer said collected light according to KIPO & the render the. Render the residual stress of the sheet a dry, process number triggers a heatable sheet the end as and for reducing an, and a cooling system cooling said connected to the second wire group according to SOI substrate and two patterns of the first extrusion, heat axis rate, a starting KIPO & strength.

[118]

Said process render the extraction and drying sheeting biaxially orientated and/or amelioration of at least 1 (shrinkage) may be a process, cross direction and species to all the direction of axis 2 which a non - intrusive may embodiment, specifically both relieving a can by drawing or both an axial 2, 2 both an axial elongation and relieving, or what 1 axial elongation and for alleviating or curing a can by drawing or axial 1 the other a process only mitigating. has a.

[119]

For example, and mitigating stretched to orient at cross ten fixations (shrinkage) may be a process, elongation and relief especially order not one number. Specifically, cross-direction orientation after, cross stretched sheet in a way that reduces in a lateral direction again can be. Elongation and mitigating isolation through ten fixations can be enhance the strength of, the two patterns of the first a heatable ., may be enhanced heat resistance.

[120]

Before sheet width said render the, 1 width a lateral direction of said sheet. 1 to 2. 0 times, specifically 1. 2 to 1. 6 times as may ten it will fix. Is possible to transversely more particularly 1. 1 to 2. 0 after stretched in a is, to be 0. 8 to 1. 6 times as 10:1. Said thermal isolation range magnification, the insulation mechanical properties.

[121]

In addition, a suitably temperature conditions ten fixation at the time of various temperatures can be adjusted to be in the range from, performed according temperature conditions in number bath at a lower portion can be varied from property..

[122]

Specifically, the present-like low render the (cross elongation and/smaller shrinkage) when performing temperature may be 110 °C or more, more specifically, 10 to 135 °C and the shaft transfers the, for example, 120 to 135 °C, can be 135 °C to 125. Dimensional shrinkage, by render the, at a temperature in the range may [...] number.

[123]

In addition, can be run at tenter ten fixations said, / elongation and cross said desired mitigation smaller strength of isolation, heat axis rate according to suitable number of 1 or more times can be is repeatedly carried out with.

[124]

An electrochemical cell of the present invention according to another embodiment of the invention, polyolefin porous separation membrane and anode, cathode are filled with electrolyte includes. said aforementioned porous separation membrane polyolefin isolation according to one aspect of the present invention in accordance with another aspect of the present invention or the number can be isolation prepared by the method.

[125]

Specially the kind of said electrochemical cell which reset one number, kinds of known in various technical fields of the present invention can be cell.

[126]

said electrochemical cell lithium metal secondary battery, lithium ion secondary battery, lithium polymer secondary battery or li-ion polymer secondary battery such as a lithium secondary cell can be. Said electrochemical cell number one method for bath number which reset the first substrate are assembled, a commonly used in various technical fields of the present invention, use can be made of, method. Said electrochemical cell number not limited to, an expanded non method for bath number include: a porous separation membrane polyolefin of the present invention, between an anode and a cathode and of then, electrolyte is that fills can be under trillion number cell manner.

[127]

Said electrochemical cell electrodes constituting an electrode substrate, a commonly used in various technical fields of the present invention method electrode current electrode active material by attached an aquapotin under trillion number can be in the form. Specially the positive electrode active material contains said electrode active material during which reset one number, of the present invention an anode which uses typically in various technical fields, use can be made of, active material.

[128]

Said number may be, for example, of positive electrode active material for non limited, lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium iron oxide or a combination of these lithium composite oxides as to the aromatic hydrocarbon KIPO &.

[129]

Used in one example of the present invention said specially carbon during electrode active material which reset one number, commonly used in various technical fields of the present invention is a negative electrode active material which, use can be made of, .

[130]

Said anode active material for non limited number may be, for example,, lithium metal or lithium alloy, carbon, petroleum cock (petroleum coke), activated carbon (activated carbon), graphite (graphite) lithium such as carbon or other as to the aromatic hydrocarbon KIPO & adsorbing material.

[131]

Specially the electrode current said which reset one number, of the present invention commonly used in various technical fields electrode current a, use can be made of, current collector. Said electrode current collector at anode current collector may be, for example, not limited number of a material, aluminum, nickel or a combination thereof by bath number as to the aromatic hydrocarbon KIPO & is of foils. At said electrode current collector cathode current collector of a material may be, for example, not limited number, copper, gold, nickel, copper alloy or a combination thereof by bath number as to the aromatic hydrocarbon KIPO & is of foils.

[132]

Electrolyte which reset the first substrate are assembled one number, commonly used in various technical fields of the present invention an electrochemical the electrolytic solution, use can be made of, . Said solvent is an organic solvent such asA+B-such as a salt of structure, organic solvent dissolved or dissociated it is possible, KIPO &.

[133]

SaidA+non may be, for example, not limited number, Li+, Na+orK+and a an alkali such as metal cations, or combination of them: cationic.

[134]

SaidB-non may be, for example, not limited number, PF6-, BF4-, Cl-, Br-, I-, ClO4-, AsF6-, CH3CO2-, CF3SO3-, N (CF3SO2)2-orC (CF2SO2)3-ions, or combination of them: an anionic.

[135]

Non organic solvent, in the number may be, for example, not limited, propylene carbonate (Propylene carbonate, PC), ethylene carbonate (Ethylene carbonate, EC), [...] (Diethyl carbonate, DEC), dimethyl carbonate (Dimethyl carbonate, DMC), deep [...] (Dipropyl carbonate, DPC), Dimethylsulphoxide (Dimethyl sulfoxide, DMSO), acetonitrile (Acetonitrile), (dimethoxyethane) [...], [...] (diethoxyethane), tetrahydrofuran (Tetrahydrofuran, THF), N - methyl - 2 - pyrrolidone (n-methyl-2-pyrrolidone, NMP), ethyl [...] Taxine (Ethyl methyl carbonate, EMC) or gamma - (Γ-butyrolactone, GBL) as to the aromatic hydrocarbon KIPO &. They are 2 be used alone or in at least one can be used by mixing.

[136]

[137]

Hereinafter, in the embodiment, compared thereby, the cold air flows and e.g. described by the described S406 the present invention. Just, of the following in the embodiment, compared e.g. and relate which the persons can just one example of the present invention, contents of the present invention is interpreted to limited to. is not but.

[138]

In the embodiment 1

[139]

Number 1andnumber 3 (containing inorganic) porousporouspolyolefin resin composition of a polyol is formednumber bath

[140]

Viscosity-average molecular weight of 600,000 g/mol high-density polyethylene 13 (Mv) weight %, viscosity-average molecular weight of 2,400,000 g/mol (Mv) ultra high molecular weight polyethylene of 6 weight %, dimethyl with D claw thread column hydrogenated has an average primary particle diameter of 15 nm in silica 13% weight, antioxidant (Irganox 1010, BASF) number 0. 1 weight % powder-like materials [...] discharging commodities by throwing a rule 1 minutes after mixing, flow paraffin 15. 4 weight % is added to this further, by pre-mixing an 1 ingredient under trillion number was 30 seconds.

[141]

Number 2(inorganicamerican containing layer) a polyol is formed porous polyolefin resin composition bath number

[142]

Viscosity-average molecular weight of 600,000 g/mol (Mv) density polyethylene in 25. 5 weight %, viscosity-average molecular weight of 2,400,000 g/mol (Mv) 4 invention provides an ultrahigh-molecular weight polyethylene. 5% weight, antioxidant (Irganox 1010) (irradiation number: BASF) number 0. 1 weight % by pre-mixing an [...] by adding was under trillion number.

[143]

Number two patterns of the first bath

[144]

Each composition (Feeder) quantify powder feeder for co-rotating twin screw 2 by (co-170 Twin screw) extruder feed portion to a.

[145]

Specifically, one number 3 and number 1 to feed portion of extruder in a polyol forming porous polyolefin resin composition supplying fiber-forming material to feeder first, number 1 and number 3 based on the total weight composition for forming porous film of, total flow cooling system 67 content. 9 weight % is the flow paraffin 52. 5 weight % liquid injection to cylinder part/S09/Markov to a min (Liquid injection) the further divided into four zones.

[146]

In addition, an alternate extruder feed portion to a porous membrane of number 2 forming a polyol supplying fiber-forming material to feeder first polyolefin resin composition, composition for forming porous film of number 2 based on the total weight, total flow cooling system 69 content. 9% weight 69 paraffin the flow is. 9 weight % / S09/Markov to a min with liquid injection cylinder part to the further divided into four zones.

[147]

 Polyolefin number 1 and number 3 porous composition charging molten of extruder 230 °C [...] extruder set temperature, screw rpm 200 rpm, discharge amount 8 kg/hr the n bit parallel data inputted the caption data to the caption, 230 °C set temperature extruder then, the raw materials kept number 2, screw rpm 250 rpm, discharge amount was performed 10 kg/hr.

[148]

Each melt temperature of 220 °C [...] a gear pump is set to, polymer filter, via conduit 2 species compositions of a coextruded an absorbent comprising a sheet of a layer 3 T - die (Die) 30 °C [...]-exchanges the indoor temperature after said number to number 1 number 3 and porous and cooling the roll of 1,300 porous micro m thickness of a surface layer 3 layer sheet was under trillion number.

[149]

Then, roll sheet prepared by the method number elongation origination 110 °C conditions MDO device to longitudinally stretch tenter after stretched back 6 125 °C inducing into 6 direction laterally conditions back stretch section.

[150]

After this, and to move extracting sheet stretched, methylene chloride (Methylene Chloride) number triggers sufficiently is immersed for extracting paraffin flow was performed and then is dried.

[151]

Then render the 130 °C inducing with tenter 1 direction transversely temperature conditions. 4 1 outlet then to a final stretched back. 2 times as performed winding, damping, inorganic number 1 and number 3 4 thickness kept. 5 micro m to, organic number 2 m micro 9 thickness kept the total thickness was under trillion number isolation in m micro 18.

[152]

In the embodiment 2

[153]

In in the embodiment 1, table 1 composition and content porous composition number 1 to number 3 and number to bath number under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[154]

In the embodiment 3

[155]

In in the embodiment 1, table 1 composition and content porous composition number 1 to number 3 and number to bath number under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[156]

In the embodiment 4

[157]

In in the embodiment 1, table 1 number 1 to number 3 composition and content and render the porous composition for bath number 127 °C temperature and under the outside number to performed at the same conditions was under trillion polyolefin porous separation membrane for number.

[158]

In the embodiment 5

[159]

In in the embodiment 1, table 2 number 1 to number 3 composition and content porous composition for bath number and thickness of each layer table 1, such as controlling the number and under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[160]

In the embodiment 6

[161]

In in the embodiment 1, table 2 number 1 to number 3 composition and content porous composition for bath number and thickness of each layer table 1, such as controlling the number and under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[162]

In the embodiment 7

[163]

In in the embodiment 1, table 2 number 1 to number 3 composition and content porous composition for bath number and thickness of each layer table 1, such as controlling the number and under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[164]

In the embodiment 8

[165]

In in the embodiment 1, table 2 number 1 to number 3 composition and content and thickness and porous composition for bath number 127 °C temperature render the number and under the outside to performed at the same conditions was under trillion polyolefin porous separation membrane for number.

[166]

Comparedexample 1

[167]

In in the embodiment 1, number 3 and number 2 number 1 which does not contain porous porous micro 18 total thickness composition number m in isolation and under the outside number to bath the same conditions was under trillion polyolefin porous separation membrane for number.

[168]

Comparedexample 2

[169]

In in the embodiment 1, number 3 and number 1 number 2 which does not contain porous porous micro 18 total thickness composition number m in isolation and under the outside number to bath the same conditions was under trillion polyolefin porous separation membrane for number.

[170]

Comparedexample 3

[171]

In in the embodiment 1, table 2 composition, content and thickness porous composition number 1 to number 3 and number to bath number under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[172]

Comparedexample 4

[173]

In in the embodiment 1, table 2 composition, content and thickness porous composition number 1 to number 3 and number to bath number under the outside the same conditions was under trillion polyolefin porous separation membrane for number.

[174]

[175]

Said in the embodiment 1 to 8 and comparison example 1 to 4 and a processing condition are used in the composition of the following table showed to 1 and 2.

[176]

DividedIn the embodiment 1In the embodiment 2In the embodiment 3In the embodiment 4Comparedexample 1Comparedexample 2
CompositionIntermediate layerPolyolefin resinHDPEMv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)Mv60 only (24 wt %)Mv60 only (13 wt %)Mv60 only (25. 5 wt %)
UHMWPEMv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)Mv240 only (6 wt %)Mv240 only (6 wt %)Mv240 only (4. 5 wt %)
Antioxidant number0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %
Inorganic----SiO2(13wt %)-
Flow paraffin (LP)69. 9 wt %69. 9 wt %69. 9 wt %69. 9 wt %67. 9 wt %69. 9 wt %
Surface layer Polyolefin resinHDPEMv60 only (13 wt %)Mv60 only (13 wt %)Mv60 only (12 wt %)--
UHMWPEMv240 only (6 wt %)Mv240 only (19 wt %)Mv240 only (6 wt %)Mv240 only (6 wt %)--
PPMv6 only (1 wt %)--
Antioxidant number0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %--
InorganicSiO2(13wt %)SiO2(13wt %)Al2O3(13wt %)SiO2(13wt %)--
Flow paraffin (LP)67. 9 wt %67. 9 wt %67. 9 wt %67. 9 wt %--
Entire film thickness (laminated film)18 m micro18 m micro18 m micro18 m micro18 m micro18 m micro
Inorganic containing layer (surface layer) thickness sum9 micro m (4. 5 micro m + 4. 5 micro m)9 micro m (4. 5 micro m + 4. 5 micro m)9 micro m (4. 5 micro m + 4. 5 micro m)9 micro m (4. 5 micro m + 4. 5 micro m)18 micro m (monolayer)0 micro m
Inorganic american containing layer (inner layer) thickness9 micro m9 micro m9 micro m9 micro m0 micro m18 m micro
-thickness ratio of about (number 1: number 2: porous number 3)1:2:11:2:11:2:11:2:1Inorganic layer aloneAlone organic layer
StretchStretch methodRoterRoterRoterRoterRoterRoter
Stretch magnification6 × 66 × 66 × 66 × 66 × 66 × 6
Render thehorizontal elongation expense1. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 2
Temperature130 °C130 °C130 °C130 °C130 °C127 °C

[177]

DividedIn the embodiment 5In the embodiment 6In the embodiment 7In the embodiment 8Comparedexample 3Comparedexample 4
CompositionIntermediate layerPolyolefin resin (PO)HDPEMv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)Mv60 only (25. 5 wt %)
UHMWPEMv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)Mv240 only (4. 5 wt %)
Antioxidant number0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %
Flow paraffin (LP)69. 9 wt %69. 9 wt %69. 9 wt %69. 9 wt %69. 9 wt %69. 9 wt %
Surface layerPolyolefin resinHDPEMv60 only (13 wt %)Mv60 only (13 wt %)Mv60 only (13 wt %)Mv60 only (13 wt %)Mv60 only (13 wt %)Mv60 only (13 wt %)
UHMWPEMv240 only (6 wt %)Mv240 only (6 wt %)Mv240 only (6 wt %)Mv240 only (6 wt %)Mv240 only (6 wt %)Mv240 only (6 wt %)
Antioxidant number0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %0. 1 wt %
InorganicSiO2(13wt %)SiO2(13wt %)Al2O3(13wt %)Al2O3(13wt %)SiO2(13wt %)Al2O3(13wt %)
Flow paraffin (LP)67. 9 wt %67. 9 wt %67. 9 wt %67. 9 wt %67. 9 wt %67. 9 wt %
Entire film thickness (laminated film)18 m micro18 m micro18 m micro18 m micro18 m micro18 m micro
Inorganic containing layer (surface layer) thickness sum12 micro m (m micro m + 6 micro 6)6 micro m (m micro m + 3 micro 3)12 micro m (m micro m + 6 micro 6)6 micro m (m micro m + 3 micro 3)4um (micro micro m + 2 m 2)4um (micro micro m + 2 m 2)
Inorganic american containing layer (inner layer) thickness6 micro m12 micro m6 micro m12 micro m14um14um
-thickness ratio of about (number 1: number 2: porous number 3)1:1:11:4:11:1:11:4:11:7:11:7:1
StretchStretch methodRoterRoterRoterRoterRoterRoter
Stretch magnification6 × 66 × 66 × 66 × 66 × 66 × 6
Render thehorizontal elongation expense1. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 21. 0→1. 4→1. 2
Temperature130 °C130 °C130 °C130 °C130 °C127 °C

[178]

Experimentexample 1

[179]

Measuring venting of isolation

[180]

Implementations allocate fewer compared and said in the embodiment number prepared by the method 1 inch (inch) diameter each of isolation won has a dimension sufficient to enable each is put in different 5 5 a cutting at the point of two region and a number two work grudge then, measuring device (asahitax nose yarn) extrusion using 100 cc air specimen each said passage of water it was determined that time. At said times of or five times calculates a mean value the second light drop unit drops part it was determined that the air permeability.

[181]

Experimentexample 2

[182]

Two patterns of the first pricking strength measurement

[183]

Each isolation prepared by the method number implementations allocate fewer compared and said in the embodiment the gate (MD) longitudinal 50 mm × 50 mm (TD) at the point of two different 3 3 a to tailor one region and a then work grudge number, G5 deck KATO the metering using robotic equipment, put the a specimen to an on hole 10 cm after 1 mm through while simultaneously holding in into a fiber - optic sensor probe force with which it was determined that. Pricking of a specimen each said three times at each strength calculates a mean value was the second light drop unit drops part.

[184]

Experimentexample 3

[185]

Measuring tensile strength of isolation

[186]

Each isolation prepared by the method number implementations allocate fewer compared and said in the embodiment the gate (MD) longitudinal (TD) 10 mm × 50 mm rectangular-formed at the point of two different 10 to tailor then work grudge number region and a two 10 a, each said UTM specimen (tension tester) to 20 mm length to a DC through the converter so that said specimen after physical TD direction and MD pulled it was determined that average direction tensile strength.

[187]

Experiment4 e.g.

[188]

Measuring axis rate of heat shrinkage of isolation

[189]

Each isolation prepared by the method number implementations allocate fewer compared and said in the embodiment the gate (MD) longitudinal 50 mm × 50 mm (TD) at the point of two different 10 10 number a to tailor one region and a small section. Each specimen 1 in an oven to a of said 105 °C then the composition is left for time, each of a specimen MD TD direction and the degree of of 1 in an oven to a of 120 °C then the composition is left for time, each specimen the longitudinal direction of the flow-and a cross of a measure of the degree to which a reduced reflect the size average a heatable the bill.

[190]

Experimentexample 5

[191]

Extrusion and variable ratio of thickness of the film after compression heating

[192]

Implementations allocate fewer compared and said in the embodiment smooth surface each of isolation prepared by the method number only a pair of press plate presses in order to drive them is interposed between the plurality of, install a punching ball and a die same 2. 2 MPa( 22 kgf/cm2)under pressure of, 5 minutes in 90 °C heating compressing the chromatic light film thickness (Litematic) thickness measuring apparatus (number width life: vL-50, number irradiation: [...]saturday) it was determined that using. Thickness before compressionT1, saidthickness after compression heatingT2formula as variable ratio of thickness of the film after compression heating 1 (T) was calculates a.

[193]

[Type 1]

[194]

T=[T1-T2]/T1× 100

[195]

In addition, said conditions for to a separator compressed heated in said extrusion such as from those described item venting method it was determined that degree.

[196]

Experimentexample 6

[197]

Electrolyte storage amount and-absorptive speed ratio

[198]

Implementations allocate fewer compared and said in the embodiment 18 °C each of isolation prepared by the method number keeping warm to an electrolyte solution (electrolyte: LiBF4, the electrolyte concentration: 1mo1/L, solvent: propylene carbonate) impregnating the fabric with an time 1 and bonding a separating film onto the, sample by the increase in mass per unit mass storage amount( A1)[film mass of increments before absorbent/film mass (g) (g)] was calculates a.

[199]

Said electrolyte storage amount of number 3 compares e.g. 2 number 1 and number 2 organic that do not include porous separation membranes consisting porous to a storage amount of the electrolyte polyolefin a polyol non-absorptive of porous separation membrane (A) was performed to scan a semiconductor substrate including.

[200]

[Type 2]

[201]

Non-absorptive( A)=[A1/A2]

[202]

In said type 2, A1the number 1 to number 3 including porous polyolefin porous separation membrane 1g and storage amount electrolyte per, A2the polyolefin resin containing and not containing a particle of a inorganic inorganic structure and made of a single-layer isolation is storage amount of the electrolyte.

[203]

[204]

Example experiment 1 to 6 according to present a reference measurement plain on the table to. an optical disc apparatus regularizes to 3 and 4.

[205]

In the embodiment 1In the embodiment 2In the embodiment 3In the embodiment 4Compared example 1Compared example 2
Extrusion (sec/100 cc)14313216415176304
the burglar stabing (gf)725788778745514681
Tensile strength( kgf/cm2)MD1,3331,5321,3441,2358592,220
TD1,2981,5051,3001,2028432,122
Heat axis rate (105 °C, 1 hr)MD0. 0%0. 0%0. 0%0. 0%0. 0%2. 0%
TD0. 0%0. 0%0. 0%0. 0%0. 0%0. 0%
Heat axis rate (120 °C, 1 hr)MD3. 0%2. 5%3. 0%3. 0%2. 5%9. 0%
TD3. 0%2. 5%3. 0%3. 0%2. 0%8. 0%
Electrolyte storage amount (mg/g) per unit mass sample479. 6523. 2392. 4501. 4545. 1218. 0
Electrolyte airspace speed ratio2. 22. 41. 82. 32. 51. 0
Variable ratio of thickness of the film after compression heating (%)7. 25. 511. 18. 35. 522. 0
Extrusion after compression heating (sec/100 cc)250221318267109780

[206]

In the embodiment 5In the embodiment 6In the embodiment 7In the embodiment 8Compared example 3Compared example 4
Extrusion (sec/100 cc)121156144195262288
the burglar stabing (gf)582884600895944956
Tensile strength( kgf/cm2)MD1,1031,8321,1441,9852,0592,020
TD1,1011,8051,1231,9422,0432,002
Heat axis rate (105 °C, 1 hr)MD0. 0%0. 0%0. 0%0. 0%0. 0%0. 5%
TD0. 0%0. 0%0. 0%0. 0%0. 0%0. 0%
Heat axis rate (120 °C, 1 hr)MD2. 0%3. 0%2. 0%3. 0%3. 5%4. 5%
TD2. 0%3. 0%2. 0%3. 0%4. 0%4. 0%
Electrolyte storage amount (mg/g) per unit mass sample675. 8414. 2566. 8327. 0305. 2261. 6
Electrolyte airspace speed ratio3. 11. 92. 61. 51. 41. 2
Variable ratio of thickness of the film after compression heating (%)5. 512. 86. 715. 017. 820. 0
Extrusion after compression heating (sec/100 cc)208320261412523573

[207]

Said table refers to surface 3 and 4, in the embodiment 1 to 4 such as a, containing inorganic porous number 2 number 1 and number 3 on both sides porous membrane when forming a multilayer structure, desired extrusion, tensile strength, pricking strength, heat axis rate, electrolyte storage amount and airspace, which is capable of securing speed ratio as well as, is thickness variation the film after compression heating, air permeability can be improved, any, cell when applied, for drying by heat than the insulating and the sound-KIPO &.

[208]

However, inorganic monolayer structure in the case of comparison 1 e.g., extrusion, heat-absorptive and axis rate properties otherwise this disclosure the n bit parallel data inputted tolerances of the components on the two in the embodiment, in the case of comparison 2 e.g. organic monolayer structure, in the embodiment this disclosure properties other than strength of the components on the two simultaneously satisfy the end-to-end has many compactible difficulty has been confirmed.

[209]

In addition, in the embodiment 5 to 8, such as, porous number 1: porous number 2:0 is-thickness ratio of about kept number 3. 5 to 1. 5:1 to 6:0. 5 to 1. 5 whenever the packet satisfies a, desired various physical properties can be ensured while.

[210]

While, compared e.g. 3 and 4 such as a, each kept-thickness ratio of about of the present invention the result is lost, as well as in 120 °C axis rate heat, heating having very high variable ratio of thickness of the film after compression, to increase the feeling pins slide along vent after compression heating, the lowering and cycle characteristics a high output of cell, by the back light unit to the by the deterioration of stability compared with a.

[211]

[212]

At least a particular portion of the present invention detail the 25mbps and techniques, homogeneously distributed to be person with skill in the art, only the specifically such and the user makes a one preferred embodiment, the number range of the present invention that are not one will it is apparent that point. Thus, by issuing an ranges are substantial of the present invention claim and their equivalent defined by will the pixels include.



[1]

The present invention relates to a method for manufacturing a polyolefin-based porous separator. Provided is a high output battery with improved battery stability and cycle properties through a porous separator which can represent strength suitable to the separator by including a plurality of polyolefin-based porous layers, and limiting a thickness ratio, a composition, and so on of the porous layers, can have a small change in property caused by heat and pressure, and can secure electrolyte penetration and heat-resistant properties at the same time.

[2]

COPYRIGHT KIPO 2016



Polyolefin number 2 number 1 polyolefinic is installed to one side kept porous number 3 includes porous polyolefin and a polyol, number 1 and number 3 polyolefin said porous polyolefin said polyfluoride, each, said number 3 and porous in porous membrane said polyolefin number 1 includes polyolefinic resin and inorganic particles based on the total weight of the, each has an average primary particle diameter of 10 to 100 nm in inorganic particles containing 40 to 70 weight %, polyfluoride said polyolefin number 2 that does not contain inorganic particles, said porous polyolefin number 1, number 2 and number 3 polyolefin said porous polyolefin said kept a-thickness ratio of about 0. 5 to 1. 5:1 to 6:0. 5 to 1. 5 and, 1 in 120 °C measured after size machine direction thermal contraction (MD, Machine Direction) and orthogonal (TD, Transverse Direction) each is 5% hereinafter, air permeability 250 sec/100 cc hereinafter and, before compression heating porous separation membrane polyolefin said thickness of( T1)and 2. 2 mpa 90 °C under pressure 5 in thickness of for compressing heating minutes( T2)1 long-term preservation to data of the measured rate of change of thickness expressed in (T) is 15% hereinafter in, polyolefin porous separation membrane.T=[T1-T2]/T1× 100

According to Claim 1, said polyolefin number 1 number 3 to porous due in elongation polyfluoride a is manufactured by blowing air bubble, polyolefin porous separation membrane.

According to Claim 1, said polyolefin number 1 and number 3 polyolefin said porous film of the same thickness kept, polyolefin porous separation membrane.

According to Claim 1, shown with codes 1 type said rate of change of thickness (T) is 10% hereinafter in, polyolefin porous separation membrane.

According to Claim 1, said polyolefin porous separation membrane for 2. 2 mpa 5 in 90 °C under pressure after compression heating minutes measured air permeability 500 sec/100 cc hereinafter in, polyolefin porous separation membrane.

According to Claim 1, said polyolefin porous separation membrane of tensile strength machine direction and feeds in a direction perpendicular each900 kgf/cm2at least, after size 1 in 105 °C measured 0 each feeds in a direction perpendicular machine direction and thermal contraction. In 1% hereinafter, polyolefin porous separation membrane.

According to Claim 1, said polyolefin porous separation membrane for 18 °C of immersing a 60 minutes of the electrolyte to an electrolyte solution measuring said storage amount is 300 mg or more per 1 g porous separation membrane polyolefin, polyolefin porous separation membrane.

According to Claim 1, said polyolefin porous separation membrane for 60 minutes of the electrolyte to 18 °C of immersing a measured long-term preservation which appear as 2-absorptive speed ratio is 1. 5 or more, polyolefin porous separation membrane. [Type 2]-absorptive non( A)=[A1/A2]saidtype 2 in, A1the number 1 to number 3 including porous polyolefin porous separation membrane 1g and storage amount electrolyte per, A2the polyolefin resin containing an inorganic particle Image without limiting a isolation by storage amount is of the electrolyte.

Polyolefin resin composition and a plasticizer by extruding kneading number melting cooling the solidified sheet polyolefin the under trillion number on both sides kept porous polyolefin number 1 number 2 number 3 is formed each porous polyolefin and a polyol, prior to melt blending polyethylene said said polyolefin resin composition, inorganic particles, and by pre-mixing an a number said plasticizer said polyolefin number 1 number 3 polyolefin said composition and porous porous form each composition, the polyolefin number 1 and number 3 polyolefin said porous polyfluoride, each, said polyolefin number 1 and number 3 polyolefin said porous in porous membrane includes polyolefinic resin and inorganic particles based on the total weight of the, each has an average primary particle diameter of 10 to 100 nm in inorganic particles containing 40 to 70 weight %, polyfluoride said polyolefin number 2 that does not contain inorganic particles, said porous poly oleate based number 1 number 1, number 2 and number 3 polyolefin said porous polyolefin said kept is-thickness ratio of about 0. 5 to 1. 5:1 to 6:0. 5 to 1. 5 under trillion and number so that, before compression heating porous separation membrane polyolefin said thickness of( T1)and 2. 2 mpa 90 °C under pressure 5 in thickness of for compressing heating minutes( T2)1 long-term preservation to data of the measured rate of change of thickness expressed in (T) is 15% hereinafter is, polyolefin porous separation membrane of manufacturing method.T=[T1-T2]/T1× 100

According to Claim 9, porous polyolefin said number 1, number 3 kept polyolefin and a polyol porous polyolefin number 2 or a co-extrusion forming a it is caused by a heat fusion of the material, polyolefin porous separation membrane of manufacturing method.

According to Claim 9, said solidified sheet longitudinal direction and a cross direction and form the, including a core having a refractive index changing number plasticizer, polyolefin porous separation membrane of manufacturing method.

According to Claim 11, said stretching temperature 100 to 130 °C, species-direction orientation magnification 4 to 10 times, in a lateral direction 4 to 10 which are carried out in such conditions conditions back, polyolefin porous separation membrane of manufacturing method.

According to Claim 11, number said plasticizer are extracted at least or more 110 °C sheet 1 ten fixations performing axial direction, polyolefin porous separation membrane of manufacturing method.

According to Claim 9, said polyolefin resin (Mv) a viscosity average molecular is 100,000 to 900,000 g/mol in density polyethylene (High Density Polyethlylene, HDPE), viscosity-average molecular weight of 900,000 g/mol or more ultrahigh molecular weight polyethylene (Ultrahigh Molecular Weight Polyethylene, UHMWPE) and polypropylene (Polypropylene, PP) 1 selected from the group consisting of a at least one inert gas, polyolefin porous separation membrane of manufacturing method.

According to Claim 14, number 2 based on the total weight composition for forming porous film of, said ultrahigh molecular weight polyethylene containing 1 to 40% weight, polyolefin porous separation membrane of manufacturing method.

According to Claim 14, porous composition for forming porous film of number 1 or number 3 based on the total weight, said each ultrahigh molecular weight polyethylene containing 1 to 40% weight, polyolefin porous separation membrane of manufacturing method.

Anode, cathode, and an electrolyte includes, said between the positive electrode and the negative isolation are disposed and, said number 9 or porous separation membrane polyolefin any one of Claim 1 to Claim 8 of a dump truck anti to number 16 anti one of a porous separation membrane polyolefin prepared by the method number in method, electrochemical cell.

According to Claim 17, said a secondary battery comprising a an electrochemical cell, electrochemical cell.

According to Claim 18, said secondary battery a lithium secondary battery, electrochemical cell.