TITANIUM ALLOY HAVING HIGH STRENGTH AND SUPER-LOW ELASTIC MODULUS

The present invention relates to a titanium alloy which is capable of nonlinear elastic deformation and simultaneously has super-high strength, super-low elastic modulus and stable super-elastic properties. The titanium alloy according to the present invention comprises Nb, Zr and O as alloy elements, the remainder being Ti and inevitable impurities, and has a valance electron ratio (e/a) of 4.17 to 4.22, a Mo equivalent (Mo) of 7.50 to 9.72, and an Al equivalent (Al) of 1.42 to 14.53. 1. A titanium alloy comprising Nb , Zr and O as alloying elements , with a remainder being Ti and inevitable impurities , the titanium alloy having an electron/atom (e/a) ratio of 4.17-4.22 , a Mo equivalent (Mo) of 7.50-9.72 , and an Al equivalent (Al) of 1.42-14.53.2. The titanium alloy of claim 1 , having an electron/atom (e/a) ratio of 4.19-4.21 claim 1 , a Mo equivalent (Mo) of 8.19-9.03 claim 1 , and an Al equivalent (Al) of 1.60-10.78.3. The titanium alloy of claim 1 , comprising 30-34 mass % of Nb claim 1 , 5.7-9.7 mass % of Zr claim 1 , and 0.03-1.0 mass % of O.4. The titanium alloy of claim 1 , wherein a coefficient of correlation of a decrease in superelastic elongation (%) to an increase in oxygen concentration after cold working of the titanium alloy is −0.5 (%/mass %) or more.5. The titanium alloy of claim 1 , having a superelastic elongation of 2.5% or more after cold working.6. The titanium alloy of claim 1 , having an elastic modulus of 60 GPa or less and a tensile strength of 1000 MPa or more after cold working.7. The titanium alloy of claim 1 , having a tensile strength (MPa)/average elastic modulus (GPa) ratio of 0.020 or more after cold working. The present invention relates to a titanium alloy exhibiting nonlinear elastic deformation and having ultrahigh strength, ultralow elastic modulus and stable superelastic properties at the same time.The present invention relates to a titanium alloy which has a strength of 1000 MPa or more and an elastic modulus of 60 GPa ...

Multilayered Metal Including Titanium, and Method for Manufacturing Method Same

A multilayer metal structure is provided that includes an inner layer of metal materials which are not titanium and outer layers on both sides of the inner layer which are formed by rolling titanium powders. A method for manufacturing the multilayer metal structure is provided that includes preparing titanium powders and metal materials which are not titanium, feeding the titanium powders and the metal materials to a vertical type rolling mill, simultaneously rolling the titanium powders and the metal materials by the rolling mill and forming the multilayer metal structure consisting of an inner layer and outer layers on both sides of the inner layer, and post-forming the multilayer metal structure to increase a packing density.

Method for Continuously Producing Thermoplastic Resin From Conjugated Diene and Thermoplastic Resin Produced by the Same

A method for continuously producing a thermoplastic resin from a conjugated diene includes: primarily polymerizing a conjugated diene monomer with an aromatic vinyl monomer in a first solvent in a first reactor, and feeding a hydroxyl group-containing polymerization inhibitor and a polar hydrocarbon to the first reactor to prepare a rubber solution; and adding an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer to the rubber solution, and subjecting the mixture to secondary polymerization in a second solvent of the same kind as the first solvent in a second reactor. The method can provide a thermoplastic resin that can have excellent color and low gloss characteristics. 1. A method for continuously producing a thermoplastic resin from a conjugated diene , the method comprising:primarily polymerizing a conjugated diene monomer with an aromatic vinyl monomer in a first solvent in a first reactor, and feeding a hydroxyl group-containing polymerization inhibitor and a polar hydrocarbon to the first reactor to prepare a rubber solution; andadding an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer to the rubber solution, and subjecting the mixture to secondary polymerization in a second solvent of the same kind as the first solvent in a second reactor.2. The method as claimed in claim 1 , wherein the conjugated diene monomer is butadiene claim 1 , isoprene or a combination thereof.3. The method as claimed in claim 1 , wherein the polymerization in the first reactor is carried out using an organometallic catalyst.4. The method as claimed in claim 1 , wherein a vinyl modifier is added for the polymerization in the first reactor.5. The method as claimed in claim 1 , wherein the rubber solution prepared by the polymerization in the first reactor is concentrated by extrusion before being fed into the second reactor.6. The method as claimed in claim 1 , wherein the first and second solvents are aromatic ...

Methacrylic Resin and Method for Preparing the Same

Disclosed herein is a methacrylic resin prepared using a mercaptan and a lactam as an initiation system. The methacrylic resin includes an alkyl(meth)acrylate unit and a (meth)acrylamide unit, and has a weight average molecular weight of about 50,000 g/mol to about 500,000 g/mol and a glass transition temperature of about 125° C. to about 145° C. 1. A (meth)acrylic resin comprising an alkyl(meth)acrylate unit and a (meth)acrylamide unit , and having a glass transition temperature of about 125° C. to about 145° C.2. The (meth)acrylic resin according to claim 1 , wherein the (meth)acrylic resin has a weight average molecular weight (Mw) ranging from about 50 claim 1 ,000 g/mol to about 500 claim 1 ,000 g/mol.3. The (meth)acrylic resin according to claim 1 , wherein the (meth)acrylic resin has an initial decomposition temperature of about 370° C. or more by thermal gravimetric analysis (TGA).4. The (meth)acrylic resin according to claim 1 , wherein the (meth)acrylic resin is prepared using a mercaptan and a lactam as coupling initiators.5. The (meth)acrylic resin according to claim 1 , wherein the mercaptan and the lactam are present in an equivalent ratio of about 1:4 to about 32:1.6. The (meth)acrylic resin according to claim 1 , comprising about 70 wt % to about 97 wt % of alkyl (meth)acrylate and about 3 wt % to about 30 wt % of (meth)acrylamide.7. The (meth)acrylic resin according to claim 1 , wherein the (meth)acrylic resin has an Mw/Mn ratio of about 1.5 to about 2.5.8. A method for preparing a (meth)acrylic resin claim 1 , comprising polymerizing monomers comprising alkyl(meth)acrylate and (meth)acrylamide using a mercaptan and a lactam as coupling initiators.9. The method according to claim 8 , wherein the monomers comprise about 70 wt % to about 97 wt % of alkyl(meth)acrylate and about 3 wt % to about 30 wt % of (meth)acrylamide.10. The method according to claim 8 , wherein the mercaptan and the lactam are present in an equivalent ratio of about 1:4 to about ...

Low-Gloss Thermoplastic Resin Composition Having Excellent Heat Resistance and Weather Resistance

A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration. 1. A low-gloss thermoplastic resin composition with good resistance to heat and weather , comprising:(A) a thermoplastic resin forming a first dispersed phase, and(B) an acrylic resin forming a second dispersed phase,wherein the first dispersed phase has a network configuration.2. The low-gloss thermoplastic resin composition according to claim 1 , further comprising (C) a heat resistant aromatic vinyl copolymer.3. The low-gloss thermoplastic resin composition according to claim 1 , wherein the (A) thermoplastic resin comprises (a1) an alkyl (meth)acrylate polymer forming a dispersed phase in a network configuration claim 1 , and (a2) an aromatic vinyl-vinyl cyanide copolymer forming a continuous phase.4. The low-gloss thermoplastic resin composition according to claim 1 , wherein the (B) acrylic resin forming a second dispersed phase is an acrylic graft copolymer.5. The low-gloss thermoplastic resin composition according to claim 1 , wherein the second dispersed phase is in the form of particles.6. The low-gloss thermoplastic resin composition according to claim 2 , wherein the low-gloss thermoplastic resin composition comprises about 20 to about 50% by weight of the (A) thermoplastic resin having a dispersed phase in a network configuration claim 2 , about 5 to about 40% by weight of the (B) acrylic resin claim 2 , and about 10 to about 50% by weight of the (C) heat resistant aromatic vinyl copolymer.7. The low-gloss thermoplastic resin composition according to claim 3 , wherein the (A) thermoplastic resin comprises about 5 to about 35% by weight of the (a1) alkyl (meth)acrylate polymer and about 65 to about 95% by weight of the (a2) aromatic vinyl ...

TITANIUM-NICKEL ALLOY THIN FILM, AND PREPARATION METHOD OF TITANIUM-NICKEL ALLOY THIN FILM USING MULTIPLE SPUTTERING METHOD

In a Ti—Ni alloy thin film, Ti and Ni are mixed and deposited on a base material by putting a Ti target and an Ni target at a predetermined distance from each other in a co-sputtering apparatus and simultaneously sputtering the targets by applying different voltages. A method of fabricating a Ti—Ni alloy thin film using co-sputtering includes a target preparing step that prepares a Ti target, a Ni target and a base material, a target disposing step that puts the Ti target and the Ni target at a predetermined distance from each other in a co-sputtering apparatus, an apparatus setting step that sets work conditions of the co-sputtering apparatus, and a thin film depositing step that forms a Ti—Ni alloy thin film with Ti and Ni mixed on the base material by operating the co-sputtering apparatus. 1. A Ti—Ni alloy thin film with Ti and Ni mixed and deposited on a base material , the Ti—Ni alloy thin film being prepared by putting a Ti target and a Ni target at a predetermined distance from each other in a co-sputtering apparatus and simultaneously sputtering the targets by applying different voltages.2. A Ti—Ni alloy thin film with Ti and Ni mixed and deposited on a base material , the Ti—Ni alloy thin film being prepared by putting a Ti target and an Ni target at a predetermined distance from each other in a co-sputtering apparatus and simultaneously sputtering the targets by applying different voltages , wherein the Ti—Ni alloy thin film is crystallized by annealing at 500° C. or more for 30 minutes or more.3. The Ti—Ni alloy thin film of claim 1 , wherein the base material is made of any one of Si wafer claim 1 , monocrystal NaCl claim 1 , and polycrystalline NaCl.4. The Ti—Ni alloy thin film of claim 3 , wherein the Ti of 43.2 to 44.9 wt % to the entire weight of the Ti—Ni alloy thin film is included.5. The Ti—Ni alloy thin film of claim 4 , wherein a voltage 3.2 to 3.4 times higher than that of the Ni target is applied to the Ti target.6. The Ti—Ni alloy thin film ...

TITANIUM-ALUMINUM-BASED ALLOY

The present invention relates to A titanium-aluminum-based alloy comprising: 40 to 46 at % of aluminum (Al); 3 to 6 at % of niobium (Nb); 0.3 to 0.5 at % of creep-property enhancer; at least any one of 1 to 3 at % of tungsten (W) and 1 to 3 at % of chrome (Cr); and the balance of titanium (Ti), wherein the creep-property enhancer comprises silicon (Si) and boron (B), wherein the boron is added at 0.05 to 0.2 at %. 1. A titanium-aluminum-based alloy comprising:40 to 46 at % of aluminum (Al);3 to 6 at % of niobium (Nb);0.3 to 0.5 at % of creep-property enhancer;at least any one of 1 to 3 at % of tungsten (W) and 1 to 3 at % of chrome (Cr); andthe balance of titanium (Ti),wherein the creep-property enhancer comprises silicon (Si) and boron (B), wherein the boron is added at 0.05 to 0.2 at %.2. The titanium-aluminum-based alloy of claim 1 , wherein the creep-property enhancer further comprises carbon (C) claim 1 , in which case the sum of contents of the boron and the carbon is in a range of 0.05 to 0.2 at %.3. The titanium-aluminum-based alloy of claim 1 , having a lamellar structure in which a α2 phase and a γ phase are regularly and sequentially arranged claim 1 , wherein a width ratio of the α2 phase and the γ phase is in a range of 2.17 to 2.22. This application claims priority from Korean Patent Application No. 10-2014-0164660 filed on Nov. 24, 2014 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.1. Field of the InventionThe present invention relates to a titanium-aluminum-based alloy, and more particularly, to a titanium-aluminum-based alloy having improved tensile strength characteristics.2. Description of the Related ArtA titanium-aluminum-based alloy is a kind of intermetallic compound drawing attention as a next-generation light-weight, heat-resistant material. The titanium-aluminum-based alloy is a two-phase alloy that contains approximately 10% of TiAl.When the titanium-aluminum-based ...

Low-Gloss Thermoplastic Resin Composition Having Excellent Heat Resistance and Weather Resistance

A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration. 1. A low-gloss thermoplastic resin composition with good resistance to heat and weather , comprising:(A) a thermoplastic resin forming a first dispersed phase, and(B) an acrylic resin forming a second dispersed phase,wherein the first dispersed phase has a network configuration.2. The low-gloss thermoplastic resin composition according to claim 1 , further comprising (C) a heat resistant aromatic vinyl copolymer.3. The low-gloss thermoplastic resin composition according to claim 1 , wherein the (A) thermoplastic resin comprises (a1) an alkyl (meth)acrylate polymer forming a dispersed phase in a network configuration claim 1 , and (a2) an aromatic vinyl-vinyl cyanide copolymer forming a continuous phase.4. The low-gloss thermoplastic resin composition according to claim 1 , wherein the (B) acrylic resin forming a second dispersed phase is an acrylic graft copolymer.5. The low-gloss thermoplastic resin composition according to claim 1 , wherein the second dispersed phase is in the form of particles.6. The low-gloss thermoplastic resin composition according to claim 2 , wherein the low-gloss thermoplastic resin composition comprises about 20 to about 50% by weight of the (A) thermoplastic resin having a dispersed phase in a network configuration claim 2 , about 5 to about 40% by weight of the (B) acrylic resin claim 2 , and about 10 to about 50% by weight of the (C) heat resistant aromatic vinyl copolymer.7. The low-gloss thermoplastic resin composition according to claim 3 , wherein the (A) thermoplastic resin comprises about 5 to about 35% by weight of the (a1) alkyl (meth)acrylate polymer and about 65 to about 95% by weight of the (a2) aromatic vinyl ...

Preparation Method of Thermoplastic Resin Composition and Thermoplastic Resin Composition Prepared Therefrom

Provided are a preparation method of a thermoplastic resin composition and a thermoplastic resin composition prepared therefrom, and more particularly, a preparation method of a thermoplastic resin composition that can have improved appearance property and improved color property by removing moisture of an impact reinforcing agent added to the thermoplastic resin composition. 1. A preparation method of a thermoplastic resin composition comprising:feeding a first thermoplastic resin in a molten state into a first hopper and feeding an impact reinforcing agent including a predetermined content of moisture into a second hopper, followed by kneading and extruding processes, andremoving the moisture in a first vent port and a second vent port,wherein the first hopper, the first vent port, the second hopper, a first kneading zone, and the second vent port are sequentially formed in a moving direction of an extruder.2. The preparation method of claim 1 , wherein the first vent port is an opened vent without a separate apparatus claim 1 , and the second vent port is provided with an apparatus selectively extracting steam only.31212. The preparation method of claim 1 , wherein a moisture content W removed in the first vent port and a moisture content W removed in the second vent port have a weight ratio(W/W) of about 0.5 to about 25.4. The preparation method of claim 1 , wherein a moisture content removed in the first vent port corresponds to about 60 to about 90 wt % of the total moisture content claim 1 , and a moisture content removed in the second vent port corresponds to about 10 to about 40 wt % of the total moisture content.5. The preparation method of claim 1 , wherein the first thermoplastic resin is an aromatic vinyl-vinyl cyanide-based copolymer claim 1 , and the impact reinforcing agent is a rubber-modified vinyl-based graft copolymer.6. The preparation method of claim 5 , wherein the first thermoplastic resin is at least one selected from the group consisting of ...

MANUFACTURING METHOD OF TITANIUM ALLOY WITH HIGH-STRENGTH AND HIGH-FORMABILITY AND ITS TITANIUM ALLOY

A method of manufacturing a titanium alloy with high strength and high formability includes preparing a material and equipment for manufacturing a titanium alloy, manufacturing a titanium alloy having a lamellar structure (martensite structure) by cooling the prepared material with water after performing heat treatment at the beta transformation temperature or more, and rolling that makes ultrafine grains by finishing forming of the titanium alloy at a plastic instability temperature by gradually decreasing the forming temperature in accordance with an increase of a strain after starting the forming at the plastic instability temperature of more, under a condition of a low strain in which the strain is 2.5 or less, after the manufacturing of a titanium alloy having a lamellar structure. 1. A method of manufacturing a titanium alloy with high strength and high formability , the method comprising:preparing a material and equipment for manufacturing a titanium alloy;manufacturing a titanium alloy having a lamellar structure (martensite structure) by cooling the prepared material with water after performing heat treatment at the beta transformation temperature or more; androlling that makes ultrafine grains by finishing forming of the titanium alloy at a plastic instability temperature by gradually decreasing the forming temperature in accordance with an increase of a strain after starting the forming at the plastic instability temperature of more, under a condition of a low strain in which the strain is 2.5 or less, after the manufacturing of a titanium alloy having a lamellar structure.2. The method of claim 1 , wherein claim 1 , in the rolling claim 1 , the initial forming start temperature for starting the forming is the plastic instability temperature or more of an initial lamellar structure claim 1 , the final forming temperature for finishing the forming is the plastic instability temperature or less of an initial lamellar structure claim 1 , and the process is ...

ULTRAHIGH STRENGTH AND ULTRALOW ELASTIC MODULUS TITANIUM ALLOY SHOWING LINEAR ELASTIC DEFORMATION BEHAVIOR

A titanium alloy having ultrahigh strength and ultralow elastic modulus, and showing linear elastic deformation behavior is disclosed. The titanium alloy (Ti-20Nb-5Zr-1Fe-O) of the present invention consists of titanium, niobium, zirconium, iron and oxygen. More specifically, the amount of niobium is 18 to 22 at. %, the amount of zirconium is 3 to 7 at. %, the amount of iron is 0.5 to 3.0 at. %, the amount of oxygen is 0.1 to 1.0 wt. %, and the balance is titanium. 1. An ultrahigh strength and ultralow elastic modulus titanium alloy showing linear elastic deformation behavior , the titanium alloy consisting of titanium , niobium , zirconium , iron and oxygen.2. The titanium alloy of claim 1 , wherein the amount of niobium is 18 to 22 atomic percent (at. %) claim 1 , the amount of zirconium is 3 to 7 at. % claim 1 , the amount of iron is 0.5 to 3.0 at. % claim 1 , the amount of oxygen is 0.1 to 1.0 weight percent (wt. %) claim 1 , and the balance is titanium.3. The titanium alloy of claim 2 , wherein the elastic modulus of the titanium alloy is 68 gigapascal (GPa) before cold working and 60 GPa after cold working claim 2 , and the titanium alloy shows linear elastic deformation behavior suitable for use as an in vivo material.4. The titanium alloy of claim 2 , wherein the amount of linear elastic deformation is more than 1%.5. The titanium alloy of claim 2 , wherein the tensile strength of the titanium alloy is more than 900 megapascal (MPa) before cold working and more than 1150 MPa after cold working claim 2 , and the elongation of the titanium alloy is more than 18% before cold working and more than 8% after cold working. 1. Field of the InventionThis invention relates to an ultrahigh strength and ultralow elastic modulus titanium alloy showing linear elastic deformation behavior, wherein the structure of the titanium alloy is beta. Compared with conventional titanium alloys having similar properties and applications, the strength of the titanium alloy is so high ...

Transparent rubber modified styrene resin and method for preparing the same by continuous bulk polymerization

One aspect of the invention relates to a transparent rubber-modified styrenic resin composition. The resin composition comprises about 5~30 parts by weight of a styrene-butadiene rubbery copolymer; and about 0 ~ 15 parts by weight of a matrix resin comprising about 20 ~ 40 parts by weight of styrenic monomer, about 30 ~ 60 parts by weight of unsaturated carboxylic acid alkyl ester monomer and about 0 ~ 15 parts by weight of vinyl cyanide monomer; wherein a difference of refractive index between the rubbery copolymer and the matrix resin is about 0.005 or less and said transparent rubber-modified styrenic resin composition has a haze of about 5 % or less as measured by a Nippon Denshoku Haze meter using a 3 mm thick test sample.

Transparent abs resin composition having excellent impact strength and flowability

One aspect of the invention relates to a transparent ABS resin composition having excellent impact resistance and flowability, which comprises about 10 to about 50 parts by weight of a rubber/(meth)acrylate-aromatic vinyl-unsaturated nitrile graft copolymer; about 50 to about 90 parts by weight of a thermoplastic resin matrix; and about 0.2 to about 0.5 parts by weight of a fluidizer, per 100 parts by weight of a base resin comprising the rubber/(meth)acrylate-aromatic vinyl-unsaturated nitrile graft copolymer and the thermoplastic resin matrix.

Method for continuously producing thermoplastic resin from conjugated diene and thermoplastic resin produced by the same

A method for continuously producing a thermoplastic resin from a conjugated diene includes: primarily polymerizing a conjugated diene monomer with an aromatic vinyl monomer in a first solvent in a first reactor, and feeding a hydroxyl group-containing polymerization inhibitor and a polar hydrocarbon to the first reactor to prepare a rubber solution; and adding an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer to the rubber solution, and subjecting the mixture to secondary polymerization in a second solvent of the same kind as the first solvent in a second reactor. The method can provide a thermoplastic resin that can have excellent color and low gloss characteristics.

Low gloss thermoplastic resin composition with soft touch surface and molded article therefrom

Low gloss thermoplastic resin composition with soft touch surface and molded article therefrom

Weather resistant thermoplastic resin having excellent low gloss characteristics and method of preparing the same

A weather resistant thermoplastic resin having excellent low gloss characteristics according to the present invention comprises a (meth)acrylic acid alkyl ester-based polymer (A) and an aromatic vinyl-cyanide vinyl based copolymer (B), wherein the (meth)acrylic acid alkyl ester-based polymer (A) forms a network-shaped disperse phase, and the aromatic vinyl-cyanide vinyl based copolymer (B) forms a continuous phase. The thermoplastic resin has excellent low gloss characteristics as well as superior weatherability, impact resistance, thermal resistance, delamination characteristics, and the like.

Weatherable thermoplastic resin composition having excellent low gloss characteristic and method of preparing the same

The present invention provides a thermoplastic resin composition which comprises (A) a (meth)acrylic acid alkyl ester-based polymer forming a network-shaped disperse phase; and (B) an aromatic vinyl-cyanide vinyl based copolymer forming a continuous phase. The thermoplastic resin composition of the present invention can have an excellent low gloss characteristics while maintaining basic physical properties of a weather resistance, impact strength, thermal resistance, and delamination characteristics.

Low gloss thermoplastic resin composition with soft touch surface and molded article therefrom

Disclosed herein is a low gloss thermoplastic resin composition with a soft touch surface comprising (A) about 10 to about 80 % by weight of a soft rubbery aromatic vinyl copolymer resin which comprises rubber particles with a graft ratio of about 40 to about 90 % and an average particle diameter of about 6 to about 20 p as a dispersed phase; (B) about 4 to about 60 % by weight of a rubber-modified aromatic vinyl copolymer resin; and (C) about 5 to about 80 % by weight of an aromatic vinyl-vinyl cyanide copolymer resin. The molded article molded from the thermoplastic resin composition has a soft touch surface as well as excellent low gloss and impact strength.

Low Gloss Thermoplastic Resin Having Excellent Heat Resistance and Impact Strength and Method of Preparing the Same

A thermoplastic resin of the present invention is prepared by copolymerizing conjugated diene rubber (A), rubbery aromatic copolymer (B), heat resistant aromatic vinyl compound (C), aromatic vinyl compound (D), unsaturated nitrile compound (E) and cross linking agent (F) and can have excellent heat resistance, impact strength, and low gloss.

Thermoplastic Resin Having Uniform Composition and Narrow Molecular Weight Distribution, and Method for Preparing the Same

A method for preparing a thermoplastic resin is disclosed, which includes consecutively polymerizing a mixed raw material comprising a (meth)acrylic acid alkyl ester, an aromatic vinyl monomer and a unsaturated nitrile monomer in a plurality of serially connected reactors while controlling polymerization conversion in each reactor to be about 40% or less. The invention also relates to a transparent ABS resin composition which employs the thermoplastic resin as a matrix resin.

Low-gloss thermoplastic resin composition having excellent heat resistance and weather resistance

A low-gloss thermoplastic resin composition that can have excellent heat resistance and weather resistance of the present invention includes (A) a thermoplastic resin forming a first dispersed phase; and (B) an acrylic resin forming a second dispersed phase, wherein the first dispersed phase has a network configuration.

Low gloss thermoplastic resin composition with soft touch surface and molded article therefrom

Disclosed herein is a low gloss thermoplastic resin composition with a soft touch surface comprising (A) about 10 to about 80 % by weight of a soft rubbery aromatic vinyl copolymer resin which comprises rubber particles with a graft ratio of about 40 to about 90 % and an average particle diameter of about 6 to about 20 p as a dispersed phase; (B) about 4 to about 60 % by weight of a rubber-modified aromatic vinyl copolymer resin; and (C) about 5 to about 80 % by weight of an aromatic vinyl-vinyl cyanide copolymer resin. The molded article molded from the thermoplastic resin composition has a soft touch surface as well as excellent low gloss and impact strength.

Thermoplastic resin having excellent heat resistance and impact strength and method of preparing the same

Thermoplastisches harz mit einheitlicher zusammensetzung und enger molekulargewichtsverteilung und herstellungsverfahren dafür

A method of preparing silica-dispersed styrene polymer nanocomposite

The present invention provides a method of preparing styrene polymer- silica nanocomposite which comprises polymerizing 100 parts by weight of a monomer mixture comprising 50 to 80 % by weight of an aromatic monomer and 20 to 50 % by weight of a vinyl cyanide monomer with 0.5 to 30 parts by weight of a colloidal silica dispersed in a first organic solvent.

A method of preparing silica-dispersed styrene polymer nanocomposite

Fine grained pure titanium and manufacturing method therefor

There is disclosed a fine grained pure titanium having an equiaxed microstructure (a microstructure with an aspect ratio (i.e., the length of a major axis/the length of a minor axis fraction ratio) is less than 3) of 90% or more and an average grain size of 15 μm or less, and a manufacturing method for the same.

Transparent thermoplastic resin and method for preparing the same

Preparation method of thermoplastic resin composition and thermoplastic resin composition prepared therefrom

Provided are a preparation method of a thermoplastic resin composition and a thermoplastic resin composition prepared therefrom. The preparation method includes: feeding a first thermoplastic resin in a molten state into a first hopper and feeding an impact reinforcing agent including a predetermined content of moisture into a second hopper, followed by kneading and extruding processes, and removing the moisture in a first vent port and a second vent port, wherein the first hopper, the first vent port, the second hopper, a first kneading zone, and the second vent port are sequentially formed in a moving direction of an extruder. The thermoplastic resin composition prepared therefrom can have improved appearance property and improved color property by removing moisture of an impact reinforcing agent added to the thermoplastic resin composition.

Manufacturing method of titanium alloy with high-strength and high-formability and its titanium alloy

A method of manufacturing a titanium alloy with high strength and high formability, the method including preparing a titanium alloy material and equipment for manufacturing the titanium alloy, manufacturing the titanium alloy having a lamellar structure (martensite structure) by cooling the prepared titanium alloy material with water after performing heat treatment at the beta transformation temperature or more, and rolling that makes ultrafine grains by finishing forming of the titanium alloy at a plastic instability temperature or less of an initial lamellar structure by gradually decreasing the forming temperature in accordance with an increase of a strain after starting the forming at the plastic instability temperature or more of an initial lamellar structure, under a condition of a low strain in which the strain is 2.5 or less, after the manufacturing of a titanium alloy having a lamellar structure.