Water soluble polyurethane wood adhesive and preparation method thereof

The invention provides a water soluble polyurethane wood adhesive, which is mainly prepared from polyester diol, dihydromethyl propionic acid, TDI, hydroxyethyl methacrylate, butyl acrylate, sodium hydroxide, butanone, azodiisobutyronitrile and water through reactions, and provides a preparation method thereof. The adhesive contains isocyanate-group and urethane group, has excellent bonding forcewith materials containing active hydrogen, and can perform hydrogen bond action with a bonded material to ensure bonding to be firmer. The formulation of the polyurethane adhesive is adjustable, and the adhesive layer can be freely adjusted from flexibility to rigidity, so the adhesive is applicable to the requirement of various material composite package and lamination compounding. The adhesive has high initial tack, can perform adhesion at normal temperature, has high final adhesion strength, requirements of study objective of excellent water resistance and duration of the adhesive layer, has ...

Aqueous spray-bonded wadding glue and preparation method thereof

The invention relates to aqueous spray-bonded wadding glue. The aqueous spray-bonded wadding glue is prepared by reacting crylic acid, butyl acrylate, ethyl methacrylate, hydroxyethyl acrylate, sodium hyposulfate, phenolic ether ethyoxyl ammonium sulphate, a buffering agent, a functional aid, ammonia water and softening water. The invention also provides a preparation method of the aqueous spray-bonded wadding glue. By the invention, the curing temperature is reduced, the energy consumption is saved, and the influence on the original base material is low. The aqueous spray-bonded wadding glue is uniform, high in elasticity and intensity as well as water resistance, acid resistance and alkali resistance, aging-proof, free of poison and peculiar smell, and safe and reliable.

Acute brain and spinal ischemia/reperfusion injury cellular network model as well as construction method and application thereof

The invention belongs to the technical field of biological medicines and in particular relates to an acute brain and spinal ischemia/reperfusion injury cellular network model as well as a construction method and application thereof. The cellular network model comprises primary isogenous central nervous system capillary endothelial cells, astrocytes and neurons, wherein the endothelial cells, astrocytes and neurons are three-dimensionally co-cultured according to the relative spatial position and quantity relations of the endothelial cells, astrocytes and neurons in vivo; the environment of oxygen and glucose deprivation/reoxygenation and recovery of glucose in a central nervous system during acute brain/spinal ischemia/reperfusion injury in vivo is simulated by utilizing a low oxygen regulation system/ordinary cell culture system and glucose-free cell culture fluid/normal cell culture fluid. The cellular network model has the beneficial effects that a medicine research mode of adopting ...

Process for improving translucency of CAD/CAM in-ceram zirconia dental materials

The invention provides a process for improving translucency of CAD/CAM in-ceram zirconia dental materials, comprising the following steps: a. preparing nano zirconia powder by reverse coprecipitation; b. adding organic bonds for pelleting; c. carrying out dry pressing under 20-30MPa and carrying out static pressure treatment under 200-250MPa to preform green bodies; d. pumping oxygen when the green bodies are sintered to 200-800 DEG C from room temperature, preserving heat for 30min when the green bodies are sintered to 1250 DEG C, then raising the temperature to the final sintering temperature of 1400-1500 DEG C at a rate of 200 DEG C/h and preserving heat for 2h, thus obtaining the in-ceram zirconia materials with translucency. The invention also provides the in-ceram zirconia materials prepared by the method. With the integral transmittance of visible light of 17.50-18.01%, the in-ceram zirconia materials can meet the requirement of the oral clinical in-ceram restorations for beauty.

Kit for rapid diagnosis of sperm concentration, preparation, and method of application

Use of methylene blue in prevention of acute cerebral ischemia damage

The invention relates to novel use of methylene blue (MB) in prevention of acute cerebral ischemia. MB can remarkably reduce cerebral ischemia infarction caused by permanent middle cerebral artery occlusion (middle cerebral artery occlusion MCAO) and alleviate damage of neurological function. The inventors of the invention permanently occlude middle cerebral artery of a mouse by adopting a suture method and after intraperitoneal injection of MB at the moment and at different time points after cerebral ischemia, changes on degree and ethology of permanent cerebral ischemia infarction of the mouse are observed. Researches discover that MB can remarkably reduce infarct volume caused by cerebral ischemia and improve the active ability of the mouse after cerebral ischemia. Through the method provided by the invention, moderate doses of MB are delivered for many times after cerebral ischemia can remarkably alleviate damage degree after permanent cerebral ischemia of the mouse so as to improve ...

Water-based pigment printing adhesive and preparation method thereof

The invention relates to a water-based pigment printing adhesive, which is mainly prepared from butyl methacrylate, ethyl methacrylate, methyl acrylate, N-hydroxymethyl acrylamide, sodium metabisulfite, alkylphenol ether sulfate, buffer, functional assistant, ammonia water, softened water and by reactions. The invention also provides the preparation method of the water-based pigment printing adhesive. The water-based pigment printing adhesive hardly influences an original substrate, has big adhesive force and high antifouling performance, high water resistance and high acid and alkali resistance. The water-based pigment printing adhesive is aging-resistance, nontoxic, free from peculiar smell, safe and reliable.

Vertical door closer

The invention discloses a vertical door closer which comprises a barrel body and a lower supporting arm. A spline shaft is arranged in the barrel body, an outer spline is arranged at the outer end of the spline shaft, a cam sleeve is arranged at the other end of the barrel body, an oil needle and a cam are arranged in the cam sleeve axially, two concentric pin shafts are arranged in the cam sleeve, an inner spline matched with the outer spline is arranged at the bottom end of the cam, the cam is mounted on the spline shaft through the splines, a single-phase valve device is arranged in the cam, an oil needle hole is formed in the single-phase valve device, the oil needle is inserted into the oil needle hole, the upper end face of a guide wheel is of a conical structure, the pin shaft is disposed in the conical structure, a lower limb arm after being connected at the lower end of the spline shaft in a sleeved manner is mounted at the lower end of the barrel body, a spring is arranged in ...

Feeding backpack side bale straw baling machine pressure relief device that airs exhaust

Feeding backpack side bale straw baling machine pressure relief device that airs exhaust relates to the straw baling machine tool, including air exit, exhaust pipe, is provided with the hole of airing exhaust on grass collecting box body, and the hole intercommunication exhaust pipe of airing exhaust, exhaust pipe end are air exit, gaseous and impurity from the air exit discharge of overstocking in the box. The beneficial effects of the utility model are that: having installed the pressure relief device that airs exhaust additional outside grass collecting box body, having played the effect of the pressure release of airing exhaust, wind -force and impurity are discharged from the air exit. 1, the straw gets into grass collection box smoothly under of the stirring of feeding cylinder, reduced the energy consumption of harvester, provides convenience for compressing the smooth push -down straw of piston, 2, mix with the impurity such as dust in the straw, wind -force through the harvester ...

PH value test paper card

The utility model discloses a PH value test paper card, including PH value standard colorimetric card and PH value test paper strip, the standard colorimetric card of the PH value includes circular color lump and fixed paper card, falls into 14 equal portions, and the corresponding PH value is all represented to each equal portions color lump, be 1, 2, 3, 4, 5 respectively, the four to six -tenehs, 7, 8, 9, 10, 11, 12, 13, 14, the central authorities of every color lump have the one to judge the hole, and every diameter of judging the hole is 9 -10mm, the diameter of circular color lump be 100mm, the reverse side is through moulding the membrane separation, fixed paper card diameter be 110mm, all through moulding the membrane separation, circular color lump and fixed paper card are the concentric circles to the positive and negative, at fix with rivet for the central point, circular color lump can free rotation removal on fixing the paper card, PH value test paper strip is the rectangle ...

Anti-heatstroke use of teprenone

The present invention relates to an application of teprenone (geranylgeranylacetone, GGA) for resisting heat apoplexy. Under the condition of peroral administration the teprenone can obviously delay heat apoplexy incidence of rat in heat environment and can prolong surviving time of the rate with heat apoplexy.

Nerve protection and damage repair application of rare ginsenoside C-K in resisting acute ischemic stroke

The invention belongs to the technical field of biological medicine and in particular relates to the nerve protection and damage repair application of a rare ginsenoside C-K in resisting acute ischemic stroke. In-vivo study proves that the rare ginsenoside C-K is capable of effectively reducing the cerebral infarction area and the encephaledema after perfusion due to arterial obstruction in the brain and the effectiveness of the rare ginsenoside C-K is dosage-dependent. In in-vitro study, the rare ginsenoside C-K is capable of obviously enhancing the activity of neuronal cells, reducing cellular damage and lowering the apoptosis rate after oxygen-glucose deprivation/reoxygenation, and also capable of enhancing the barrier function of brain capillary endothelial cells, so that the rare ginsenoside C-K is capable of effectively preventing secondary strike caused by immune cells, inflammatory factors and the like in the blood going into brain via the blood brain barrier after ischemia re-perfusion ...

Speed changing mechanism

The invention discloses a speed changing mechanism. The speed changing mechanism comprises a valve body, a speed changing valve and the like, and is characterized that a base body of the speed changing valve is provided with threads and grooves; a valve stem is arranged at the lower end of the base body and is provided with an initial area, a speed changing area and a brake buffering area; the sections and the shapes of the initial area, the speed changing area and the brake buffering area are different; the valve body is provided with a hole; and the valve stem of the speed regulating valve can pass through the hole. A plurality of regulating valves can be integrated into the multifunctional speed regulating valve; the base body of the speed regulating valve is provided with the threads and the grooves; the lower end of the base body is provided with the valve stem; the valve stem is provided with the initial area, the speed changing area, the brake buffering area and a pause area; the ...

Connector assembly

A connector assembly comprises a shielding case, a radiator and a buckle. The shielding cover is provided with a top wall, a first containing space and a second containing space, wherein the first containing space and the second containing space are located in the shielding cover and are arranged side by side, and a first window and a second window which are communicated with the first containing space and the second containing space respectively are formed in the top wall. The radiator is provided with a bottom plate and a thermal coupling part, wherein the bottom plate is arranged on the top wall and stretches across the first window and the second window, and the thermal coupling part is arranged on the bottom face of the bottom plate in a bias mode and stretches into the first containing space through the first window. And the buckle is assembled on the shielding case, the buckle is provided with an elastic arm which stretches across the bottom plate of the radiator, the elastic arm ...

Semi-quantitative sperm concentration rapid self-test kit, prepration method and using method thereof

The invention discloses a semi-quantitative sperm concentration rapid self-test kit, a prepration method and a using method thereof, the semi-quantitative sperm concentration rapid self-test kit comprises a sperm collection box, cell staining solution, physiological saline and a test board, wherein, the sperm collection box consists of a plastic collection box and a sperm liquefying agent, the test board comprises a housing and a substrate, a test hole and a control hole are formed in the center of the housing, water-absorbing paper, a filter membrane and a standard color unit are arranged onthe substrate, and the color of the standard color unit is the color of the test results of adding sperm samples with the concentration of 5 million, 10 million, 20 million, 30 million, 40 million, 60million, 80 million and 100 million/ml into the cell staining solution. The semi-quantitative sperm concentration rapid self-test kit has the advantages that the semi-quantitative sperm concentrationrapid ...

Anti-sunstroke application of baicalin

The invention relates to an anti-sunstroke application of baicalin (beta-D-gluconic acid-5,6-dihydroxy-4-oxo-2-phenyl-4H-benzopyran-7). Under the condition of oral administration, the baicalin can obviously delay the sunstroke of rats in the thermal environment, extend the survival time of the rats suffering from sunstroke and put off the death of the rats in the thermal environment. The inventor feeds adult rats baicalin of certain concentration by intragastric administration, then observes the sunstroke and the survival time of the rats, and discovers that feeding the rats the baicalin of certain concentration by intragastric administration can obviously delay the sunstroke of the rats in the thermal environment, put off the death of the rats in the thermal environment, simultaneously extend the survival time of the rats suffering from sunstroke, and improve the anti-sunstroke capability of the rats. When feeding a proper amount of common medicant baicalin at the proper time by the method ...

Feeding backpack side bale straw baling machine grass collection box

Feeding backpack side bale straw baling machine grass collection box relates to the straw baling machine tool, and including grass collecting box body, feeding cylinder, sprocket, grass collecting box body's middle part is arranged in to the feeding cylinder, and the sprocket sets up in one side of feeding drum shaft, drives the sprocket through the chain, provides power for the feeding cylinder, its characterized in that: in the grass collecting box body, last rear at the feeding cylinder is provided with the choke plate, and grass collecting box body's both sides are fixed in to the both sides of choke plate, and grass collecting box body's upper cover is hugged closely to the higher authority of choke plate. The beneficial effects of the utility model are that: installed a choke plate in grass collecting box body additional, it plays and hinders the wind action, and like this, the straw leads to the below of feeding cylinder with the wind, provides convenience for compressing the smooth ...

Novel grain dryer

Novel grain dryer relates to grain stoving storage technology field, and the tower body is the octagon, and the tower body from top to bottom is in proper order: the dryer top, the section of drying upper segment, switching -over section, the section of drying hypomere, cold wind section, bread line section, ji liangkou, every section of drying has two -layer angle box, and upper and lower staggered arrangement makes whereabouts grain spiral whereabouts from top to bottom in the tower, check and domatic slope of outer check spiral and rotatory opposite direction in the switching -over section, the section of drying hypomere lower part is the cold wind section, and the air -cooler is inwards blown a cold wind over for the cooling of grain, the grain of cooling flows into the bread line section, collects through ji liangkou. The beneficial effects of the utility model are that: general wet grain is pushed up to the tower at the bottom of by dryer, accomplishes promptly and dries, and is efficient ...

Preparation method of combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive

The invention discloses a preparation method of a combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive. The preparation method comprises the following steps of: polymerizing phosphorus-containing acrylic ester with fire resistance and a general acrylic ester monomer by a radical solution polymerization process under the conditions of normal temperature of 70 to 85 DEG C, nitrogen atmosphere as protective gas, peroxide as an initiator and a mixed solvent as a solvent; preparing a solution type adhesive material of an acrylic ester copolymer with intrinsic fire resistance by a multi-step polymerization process; and blending the solution type adhesive material and lipophilic ammonium polyphosphate slurry to obtain the flame-retardant pressure-sensitive adhesive with excellent pressure sensitivity and fire resistance. The preparation method is environment-friendly, non-toxic and simple in process. By the method, the intrinsic fire resistance is improved; influence ...

Aqueous dual membrane glue, and fabricating method

Colorful laminating adhesive and preparation method thereof

The invention discloses a colorful laminating adhesive. The laminating adhesive comprises the following components in percentage by weight: 55 to 80 percent of polyacrylate emulsion, 0 to 40 percent of inorganic pigment, 0 to 40 percent of organic pigment, and 0 to 10 percent of fillers; and the sum of weight percentage of the component is 100 percent. The invention also provides a preparation method of the colorful laminating adhesive. The colorful laminating adhesive is compounded by the polyacrylate emulsion, the inorganic pigment, the organic pigments and the fillers, so that the colorful laminating adhesive product has good adhesion and covering properties a different colors, and can be widely applied to paper.

Waterborne flame retardant adhesive and preparation method thereof

The invention provides a waterborne flame retardant adhesive used for external packages for installation, such as heat insulating materials, which is mainly prepared by reacting acrylic acid, methacrylic acid, butyl acrylate, ethyl acrylate, styrene, a functional monomer, an initiator, an emulsifier, a buffering agent, functional auxiliaries, a pH regulator, softened water and aluminium hydroxide.The invention also provides a preparation method of the waterborne flame retardant adhesive. The waterborne flame retardant adhesive is nontoxic, safe and environment-friendly. Stable blending emulsion is prepared by adding a given quantity of inorganic particles to a waterborne emulsion system to undergo full blending. The additive subjected to flame retardant treatment can be applied to the fields which are strict with the requirements of thermal properties. the cost of the waterborne flame retardant adhesive is greatly lowered and the raw materials of the waterborne flame retardant adhesive ...

Spermatozoon activity fast detecting reagent kit and its preparation and use method

Vertical door closer

The utility model discloses a vertical door closer, including barrel and lower support arm, be equipped with the integral key shaft in the barrel, the upper end of barrel is equipped with the cam cover, cam cover in be equipped with trunk -piston and spindle along the axial, be equipped with the slide on the trunk -piston outer wall, the upper end of trunk -piston is equipped with the check valve device, is equipped with single -phase valve and spindle hole on the check valve device, the spindle inserts the spindle hole in, the lower extreme of trunk -piston is installed through the spline the upper end of integral key shaft, be equipped with two balls with barrel center line symmetry on the lateral wall of cam cover, the central plane comprises the centre of sphere of two balls and the axis of barrel, two ball spherical outside surfaces respectively with the slide contact, the low limbs arm cup joint in the integral key shaft lower extreme after install cylinder bottom, be equipped with ...

Anti-heatstroke use of teprenone

The present invention relates to an application of teprenone (geranylgeranylacetone, GGA) for resisting heatstroke. Under the condition of peroral administration, the teprenone can obviously delay rat heatstroke in a heat environment and prolong surviving time of the rate with heatstroke. Different concentration of teprenone is given to adult rats by gavage, subsequently the rat heatstroke and the surviving time of the rate are observed. The result shows that a certain concentration of teprenone given by gavage in advance can obviously delay the rat heatstroke in the heat environment, and prolong the surviving time of the rat with heatstroke, and improve the anti-heatstroke ability. Through the method of the invention, the common medicine teprenone with a proper dosage is taken at a proper time, which can improve the rat anti-heatstroke ability, and provide powerful evidence for human experiment. If the method can be popularized to human application, better economic benefit and social benefit ...

Water-based non-breathable water-resistant paint and preparation method thereof

The invention discloses water-based non-breathable water-resistant paint which comprises the following components by weight percentage: 30-80 percent of water-based resin mixed emulsion, 3 to 8 percent of a functional waterproof additive, 0.1 to 2 percent of a functional non-breathable additive, 1 to 5 percent of a filling material, 0 to 8 percent of a coalescing agent, 0 to 10 percent of a cross-linking agent, 0 to 5 percent of a diluent, 0.50 to 1.0 percent of an antifreezing agent, 0.10 to 0.15 percent of a bactericidal preservative and 0 to 2 percent of other additives. The invention further provides a preparation method of the water-based non-breathable water-resistant paint. The water-based non-breathable water-resistant paint has the advantages of safety and environmental protection, convenience in construction, wide application and the like.

Water-based protective film adhesive and preparation method thereof

The invention relates to a water-based protective film adhesive for protecting the surfaces of an aluminum plastic plate, a mirror steel plate, a colored plate, an organic glass plate, a decorative plate and profiles such as an aluminium profile, a plastic steel profile, a stainless steel coiled material and the like. The water-based protective film adhesive is prepared mainly by reacting methacrylic acid, ethyl acrylate, methyl methacrylate, a functional monomer, an initiator, an emulsifying agent, a buffering agent, a functional aid, a pH adjusting agent and softened water. The invention also provides a preparation method of the water-based protective film adhesive. By the water-based protective film adhesive and the preparation method thereof, the problem of residual offset printing of protected profiles is solved; the advantage of emulsion polymerization can be exerted; and adhesive property is improved.

Water soluble package adhesive and preparation method thereof

The invention provides a water soluble package adhesive applied to forming adhesion for various paper packages. The water soluble package adhesive is mainly prepared from methacrylic acid, ethyl acrylate, styrene, functional monomers, initiator, emulsifier, buffering agent, functional accessory agent, pH regulator and softened water through reactions. The invention also provides a preparation method. The invention solves the problem of solvent volatilization, can simultaneously play the advantages of emulsion polymerization, enhance the bonding force, and can solve the problem of oily adhesivediscoloring because of good color retention of crylic acid.

Novel twin -bucket lift

The utility model discloses a novel twin -bucket lift, including frame main part, cable wire, cableway bucket roof -rack, cableway bucket, fixed pulley, pulley support, motor, cable wire gyro wheel, cable wire gyro wheel support, belt, gyro wheel frame, advance drain pipe, water tank, water pump, balanced weight, cable wire gyro wheel belt pulley, slide rail, roof -rack and base, the frame main part is welded through a plurality of frames, a cableway bucket roof -rack is respectively connected at the cable wire both ends, cableway bucket roof -rack top is connected with the cable wire, lower extreme fixed connection cableway bucket, fixed pulley fixed connection is to the pulley support, motor fixed connection is to the base, motor and cable wire gyro wheel belt pulley are connected to thebelt, slide rail fixed connection arrives in the frame main part, roof -rack lower extreme and the welding of frame main part, the upper end is even fixed with the pulley support, and this twin -bucket ...

Aqueous soft cover rubber and preparation method thereof

The invention provides aqueous soft cover rubber applied to glue of plastic-plastic composite materials and a preparation method thereof. The aqueous soft cover rubber is mainly prepared from raw materials of crylic acid, butyl acrylate, styrene, a functional monomer, an initiating agent, an emulsifying agent, a buffering agent, a functional auxiliary agent, a pH regulating agent and softened water through a reaction. Due to the adoption of an aqueous medium, the aqueous soft cover rubber has no pollution, eliminates harm to bodies of producers and users of an organic solvent, greatly reduces hidden dangers of fire disasters in a use process, has no residual harmful substances among compound films, improves the cohesive force of the compound films, solves a balanced relation between the cohesive force and initial adhesive force and bonding strength and can overcome the operation problems of bonding strength, leveling, and the like of a compounded product, and the compounded product can ...

Water soluble aluminum foil adhesive and preparation method thereof

The invention provides a water soluble aluminum foil adhesive compounded under a condition of high speed (short time) for thin materials with metal material (aluminum foil)/paper two different properties, which is prepared from crylic acid, ethyl acrylate, styrene, functional monomers, initiator, emulsifier, buffering agent, functional accessory agent, pH regulator and softened water through reactions, and provides a preparation method for the water soluble aluminum foil adhesive. The adhesive achieves green and environmental protection, and is good for health, has no bad odor, does not contain phthalate plasticizer, heavy metals and other harmful substances, has high solid content, high toughness, ensures that a mounted product cannot be crumpled and is not easily deformed, and has good performance of dirt removing and clean maintaining. Residual adhesive on a decorative surface can be easily removed by a wet rag to maintain the nice appearance of the decorative surface of a base material ...

A security alert device for hoisting platform

The utility model provides a security alert device for hoisting platform, including two response supports, every response support all includes magnetic bases, scalable pole setting, wireless induction system, power supply unit, wireless induction system divide into transmitting terminal and receiving terminal, transmitting terminal and receiving terminal set up respectively in the scalable pole setting of difference response support, the receiving terminal can be received and come from transmitting terminal outgoing letter number, the security alert device still includes alarm device, alarm device sets up on the response support at receiving terminal place, when detecting that the signal is blocked between transmitting terminal and the receiving terminal, alarm device is with activate the alarm. The device can detect the position that the operation personnel face the limit operation after a jack -up hoist and mount mouthful guardrail is demolishd, remind the operation personnel to take ...

ELECTROLYSIS COMBINED WITH RADICAL, TANGENTIAL AND DIAGONAL SHAVING TECHNOLOGY

Vertical door closer

The utility model discloses a vertical door closer, including the barrel, lower support arm is equipped with the integral key shaft in the barrel, and the upper end of this integral key shaft is equipped with the external splines, the other end of barrel is equipped with the cam cover, is equipped with spindle and cam along the axial in the cam cover, be equipped with in the cam cover two with the core pin axle, the bottom of cam be equipped with with external splines matched with internal spline, this cam is installed on the integral key shaft through the spline, be equipped with the check valve device in the cam, be equipped with on the check valve device with the spindle hole, the spindle inserts the spindle hole in, the toper column structure is personally submitted to the upper end of cam, the round pin axle is arranged in the toper column structure in, down the support arm cup joint in the integral key shaft lower extreme after, install cylinder bottom, the barrel in be equipped with ...

Novel sperm washing nutrient solution and preparation method thereof

The invention discloses a novel sperm washing nutrient solution and a preparation method thereof. The novel sperm washing nutrient solution prepared by the method is stable and reliable and has good solubility. The novel sperm washing nutrient solution can be used for washing the sperm according to certain procedures and the sperm can be directly stored in the sperm washing nutrient solution. The comparison of activity and survival rate of the sperm in the sample proves that the novel sperm washing nutrient solution can obviously improve the activity and survival rate of the sperm in the sample in comparison with the washing solution without neurotrophic factor and shows increase of total proportion of a-grade sperm and b-grade sperm; and six hours later, the survival rate of sperm is improved. The novel sperm washing nutrient solution has effect of promoting reproduction, and is expected to provide a more effective measure to keep male fertility for assisted reproduction in clinic.

Pre-coating film and preparation method thereof

The invention discloses a pre-coating film which comprises a base material layer, a polishing anti-bonding layer arranged on the first surface of the base material layer, and a pre-coating layer arranged on the second surface of the base material layer. The invention further discloses a preparation method of the pre-coating film. Because a high-solid-content polydispersion particle size styrene-acryli emulsion obtained by adopting a special polymerization process as the pre-coating film, the pre-coating film has good bonding force, excellent bonding strength for printing materials produced by various printing technologies, especially a digital printing technology, and embossing processes such as laminated embossing and rolling can be realized very well. Meanwhile, because modified glycidoxypropyltrimethoxy silane is used as a polishing anti-bonding layer, the pre-coating film has the advantages of strong universality, high color saturation, high brightness, high level and smooth degree, ...

Improved water-based laminating adhesive and method for preparing same

The invention provides improved water-based laminating adhesive applied to adhering to paper and plastic composite material and a method for preparing the same. The method is used for improving the quality of laminating adhesive products. The laminating adhesive is mainly prepared from acrylic acid, butyl acrylate, methyl methacrylate, styrene, functional monomer, an evocating agent, an emulsifier, a buffering agent, a functional addition agent, a pH regulating agent and softened water through a reaction. The improved water-based laminating adhesive replaces or partially replaces the styrene with the methyl methacrylate, so that the performance in aspects such as cohesive force, deinking and the like of laminating products is improved greatly.

Diaphragm for preparing nitrogen trifluoride by electrolyzing and melting ammonium bifluoride as well as preparation method and application of diaphragm

The invention provides a diaphragm for preparing nitrogen trifluoride by electrolyzing and melting ammonium bifluoride. The diaphragm comprises a polytetrafluoroethylene pore plate layer and an outer surface spraying layer sprayed on the outer surface of the polytetrafluoroethylene pore plate layer, the polytetrafluoroethylene pore plate layer comprises carbon fibers and PFA resin, the outer surface spraying layer comprises Nafion resin.The invention further provides a preparation method and application of the diaphragm, the diaphragm has the characteristics of being high in strength and good in ion permeability, bubbles are difficult to permeate, and after the diaphragm is applied to an electrolysis process for preparing nitrogen trifluoride through electrolysis and melting of ammonium hydrogen fluoride, the nitrogen trifluoride can be effectively separated from the diaphragm, and the service life of the diaphragm is prolonged. And the capacity of preparing nitrogen trifluoride by electrolyzing ...

Water soluble flocking glue and preparation method thereof

The invention provides a water soluble flocking glue for static flocking, which is mainly prepared from crylic acid, methacrylic acid, butyl acrylate, ethyl acrylate, styrene, functional monomers, initiator, emulsifier, buffering agent, functional accessory agent, pH regulator and softened water through reactions, and provides a preparation method for the water soluble flocking glue. The water soluble flocking glue reduces solidification temperature, saves energy consumption and has smaller influence to raw base materials. The product is prevented from size separation, has good levelling property, strong dirt resistance, easy spray and easy flocking, strong adhesive force, good water resistance, acid and basic resistance. The product is anti-aging, non-toxic and odorless, safe and reliable.

Acute hypoxia injury resistance use of teprenone

The invention relates to the action of anti-acute hypoxia injury of teprenone, under the condition of oral administration of the teprenone, the survival ratio of chmice under the acute hypoxia condition can be obviously improved, the survival time can be prolonged. The invention pours the teprenone with different concentrations into the stomach of the adult chmice, after four hours, the chmice isarranged in the acute hypoxia environment, the survival ratio and the survival time are observed, so that the survival ratio of the animal can be improved and the survival time of the animal can be prolonged under acute hypoxia condition by pouring the teprenone with certain concentration into the stomach in advance, the anti-acute hypoxia injury capability of the chmice can be improved. According to the method of the invention, the teprenone is administrated at suitable time with suitable dose, which can improve the anti-acute hypoxia injury capability of the chmice, powerful evidences can be provided ...

Kit for rapid diagnosis of sperm concentration, preparation, and method of application

Waterborne adhesive for metal ceramic color sand decorative coating and preparation method thereof

The invention relates to a waterborne adhesive for a metal ceramic color sand decorative coating. The waterborne adhesive is mainly prepared from methylacrylic acid, butyl acrylate, ethyl methacrylate, methyl methacrylate, glycidyl acrylate, sodium persulfate, a nonionic emulsifier, ammonium bicarbonate, functional auxiliaries, ammonia and softened water through reactions. The invention also provides a preparation method of the waterborne adhesive. The waterborne adhesive has the following beneficial effects: the waterborne adhesive has good adhesion to the metal base material, has high rigidity, glossiness and weather resistance, is nontoxic and free from odor and is safe and reliable.

Medicament for treating acute soft tissue injury and its preparation process

Method for preparing dental colored nano-zirconia

The invention provides a method for preparing dental colored nano-zirconia and the nano-zirconia prepared by the method. Prepared dental colored nano-zirconia powder can adopt a clinically common and general colored zirconia color scheme, so that tooth color matching becomes simple and practical, a clinical butment reserved space can be saved and good texture is achieved.

Interlock mechanism of feeding backpack side bale straw baling machine speed reducer

Interlock mechanism of feeding backpack side bale straw baling machine speed reducer relates to the straw baling machine tool, is connected with power input sprocket on the speed reducer power input shaft, and power take off sprocket and power take off gear are connected respectively to the power output shaft both ends, and speed reducer power take off gear drives flywheel, connecting rod to drive main piston motion, speed reducer power take off sprocket passes through the chain and drives rim plate and the rotation of feeding drum shaft wheel, the speed reducer is fixed on arranging the layer board in, and layer board one end is the fixed plate, and the fixed plate is connected in compression case lower part, and the layer board is " L " font structure with the fixed plate, is a contained angle between layer board and fixed plate for after the speed reducer was installed on combine, the speed reducer always was in a horizontality. The beneficial effects of the utility model are that: after ...

Water-based printing ink emulsion for plastic foil, and preparation method thereof

The invention relates to a water-based printing ink emulsion for a plastic foil. The emulsion is prepared by the reaction among butyl methacrylate, ethyl acrylate, methyl methacrylate, diacetone-acryloamide, sodium hyposulfite, alcohol ether sodium succinate, a buffering agent, a functional auxiliary agent, ammoniacal liquor and softened water. A preparation method in the invention is also disclosed. According to the invention, the water-based printing ink emulsion enables a large bonding intensity for the plastic foil, and has the advantages of good levelability, aging resistance, no poison, no smell, safety and reliability.

Domestic sperm motility test card

The invention discloses a domestic sperm motility test card. The domestic sperm motility test card comprises a minitype glass ball, a support, a synthetic rubber sheet, a PVC color magnetic rubber sheet, a hard card paper sheet and a transparent adhesive sticker sheet, wherein the minitype glass ball is inlayed on the support; the support is inlayed in a central round hole of the synthetic rubber sheet; the bottom of the synthetic rubber sheet is stunk to the center of the hard card paper sheet through a double-sided adhesive sticker; the support is in a bamboo hat shape; a round hole is formed in the top of the support; round holes are uniformly formed in the synthetic rubber sheet, the PVC color magnetic rubber sheet and the hard card paper sheet; the circle center of the four round holes and the ball center of the minitype glass ball are positioned on the same straight line. The domestic sperm motility test card has the advantages that the domestic sperm motility test card can be used ...

Semen energy quick detection reagent kit and its preparation and usage method

The invention discloses a spermatozoon vigor fast detection kit and preparing and using method thereof. The kit includes a spermatozoon collecting box containing a plastic collecting box and spermatozoon liquefacient; triton X100 solution; propidium iodide solution; a standard color card, colors of which are color of adding triton solution with concentration of 0.05-0.2% and propidium iodide solution with concentration of 0.01-0.5% into spermatozoon sample with different concentration notarized by microscope; and a test board containing a shell and a basal plate, wherein two test pores are arranged on center of the shell, absorbent paper and filtering film are equipped on the basal plate. Advantages of the kit are: quantity of activated spermatozoon can be fast and accurately detected, more time can be saved than traditional diagnostic method, and usage is simple.

Method for preparing dental colored nano-zirconia

The invention provides a method for preparing dental colored nano-zirconia and the nano-zirconia prepared by the method. Prepared dental colored nano-zirconia powder can adopt a clinically common and general colored zirconia color scheme, so that tooth color matching becomes simple and practical, a clinical butment reserved space can be saved and good texture is achieved.

空心多棱体成型方法

The hollow prism forming method includes punching one side of metal plate with one upper punching mold and one lower punching mold to form one folded angle for two planes of the prism, punching the other side of the metal plate with the molds to form the other folded angle, repeating the punching process for several times to form one prism with opened mouth, and finally welding the two butt jointed planes. Similarly, hollow prism with circular surface may be formed. The said forming process has less steps, and the formed prism has high strength and high quality.

Water soluble cardboard composite adhesive and preparation method thereof

The invention provides a water soluble cardboard composite adhesive for cold applying and laminating of cardboards and PET or BOPP films, which is mainly prepared from crylic acid, methacrylic acid, butyl acrylate, ethyl acrylate, styrene, functional monomers, initiator, emulsifier, buffering agent, functional accessory agent, pH regulator and softened water through reactions, and also provides apreparation method for the water soluble cardboard composite adhesive. Due to adoption of the water soluble media, the composite adhesive has no pollution, eliminates hazards of harmful organic solvent to bodies of staff in production and use, greatly reduces hidden dangers of fir disasters in a using process, and has no residual harmful substances among composite films; and the quality level of oily adhesive can be completely achieved by using the emulsion type water soluble cardboard composite adhesive, and the problem in the aspect of odor can be completed solved.

Waterborne suede paint and preparation method thereof

The invention provides waterborne suede paint, which mainly comprises water, talc, light calcium, defoamer, ammonia water, styrene-acrylic emulsion, film-forming additives, glass beads and color paste. The invention also provides a method for preparing the waterborne suede paint. The paint has the advantages that the paint is outstanding in suede and stereoscopic sense, free from pollution, harmless to human body and free from incendivity, ensures strong water resistance and acid-alkali resistance of film, enables decorative surfaces to have high-grade nap-like effects, can be mixed to have dozens of soft colors, and is beneficial to waste utilization by utilizing waste glass beads of fly-ash glass factories.

Waterborne rusted paint and preparation method thereof

The invention provides waterborne rusted paint, which mainly comprises transforming agent, transformation accelerator, water, film-forming additives, freeze-thaw stabilizer, ethylene-propylene emulsion, thickener, defoamer and preservatives. The invention also provides a method for preparing the waterborne rusted paint. The waterborne rusted paint has the characteristics of low film-forming temperature, good storage stability, good film properties, high film water resistance and the like, and completely meets the antirust protection requirements of the shipbuilding industry, petroleum industry, machinery industry, construction industry and other various industries needing steel antirust protection.

Feeding backpack side bale straw baling machine

The utility model provides a feeding backpack side bale straw baling machine, relates to crop straw and beats a bundle recovery technical field, and the compression case is tilt up setting backward in the past, and the compression incasement is equipped with the main piston, main piston front end swing joint connecting rod, connecting rod swing joint flywheel, the flywheel is driven by the speed reducer, the front upper place is equipped with grass collection box in the compression case, and the grass collection box middle part is provided with the feeding cylinder, and the grass collection box rear portion sets up the income grass mouth of vice piston, grass collection box's careless mouthful of intercommunication compression case of play, the well rear of compressing the case is provided with makes the packing needle, plays packing needle and knotter cooperation, and formation becomes to tie to knoing of straw piece, and compression case rear end is equipped with the bale export, in the ...

Adhesion agent used by cold gummed paper for medical package

The invention relates to an adhesive used for medical package cold gummed paper, which consists of water 35 to 45%, latex 45 to 50%, thickening agent 4 to 6%, calcium carbonate 1.5 to 2.5%, antioxidant 0.5 to 1%, surfactant 0.8 to 2% and bactericide 0.02 to 0.05%. The adhesive has the advantages that the product has excellent leveling performance to prevent the occurrence of adhesive discontinuity in the application process so as to ensure the product quality in the shelf life, and the production process has simple and convenient operation and reduced energy consumption.

Aqueous non-woven fabric glue and preparation method thereof

The invention relates to aqueous non-woven fabric glue which is prepared through the reaction of methacrylic acid, butyl acrylate monomer, ethyl acrylate, methyl methacrylate, glycidyl acrylic acid ester, ammonium persulfate, fatty alcohol succinate, sodium bicarbonate, a functional auxiliary agent, ammoniacal liquor and softened water. The invention also provides the preparation method of the aqueous non-woven fabric glue. The technical scheme of the invention has the advantages of reduction of solidification temperature, energy consumption saving, and small influence on original base material. According to the preparation method in the invention, the aqueous non-woven fabric glue has the advantages of good uniformity, no fall of furs, high strength, strong anti pollution resistibility, good water, acid and alkali resistance, aging resistance, non-toxicity, absence of odor, safety and reliability.

Method and device for recycling waste electrolyte in nitrogen trifluoride electrolytic cell

The invention provides a method for recovering waste electrolyte in a nitrogen trifluoride electrolytic cell, which comprises the following steps: after the nitrogen trifluoride electrolytic cell stops electrolysis, introducing the obtained waste electrolyte and paste sediment into a storage tank for standing, then heating the storage tank, starting electromagnetic equipment, and starting the electromagnetic equipment to recover the waste electrolyte in the nitrogen trifluoride electrolytic cell. Metal simple substances in the paste sediment are adsorbed to the inner wall of the material storage tank through magnetic force, metal fluoride is deposited at the bottom of the material storage tank, and upper-layer material liquid is obtained; supernate obtained after centrifugation of the upper-layer feed liquid is introduced into a mixing reaction kettle through a buffer tank, and whether the supernate is introduced into a transfer tank or not and used as electrolyte is judged by measuring ...

Vertical automatic door closer

The utility model discloses a vertical automatic door closer, including barrel and lower support arm, be equipped with the integral key shaft in the barrel, the other end of barrel is equipped with the cam cover, follows the axial in the cam cover and is equipped with spindle and cam gearing, and the cam gearing includes hollow cylindricality piston and cam, and the upper end of cylindricality piston is equipped with the check valve device, is equipped with the spindle hole on the center part of check valve device, and the hypomere of spindle is arranged in the spindle hole in, be equipped with the round pin axle on the cylindricality piston, the lower extreme of cylindricality piston is installed in the integral key shaft upper end through the spline, the cam include conical cam and lower conical cam, the taper surface of two conical cams forms the slide relatively, this slide with the round pin axle carry out axial plane contact, down the support arm cup joint in the integral key shaft ...

Process for improving translucency of CAD/CAM in-ceram zirconia dental materials

The invention provides a process for improving translucency of CAD/CAM in-ceram zirconia dental materials, comprising the following steps: a. preparing nano zirconia powder by reverse coprecipitation; b. adding organic bonds for pelleting; c. carrying out dry pressing under 20-30MPa and carrying out static pressure treatment under 200-250MPa to preform green bodies; d. pumping oxygen when the green bodies are sintered to 200-800 DEG C from room temperature, preserving heat for 30min when the green bodies are sintered to 1250 DEG C, then raising the temperature to the final sintering temperature of 1400-1500 DEG C at a rate of 200 DEG C/h and preserving heat for 2h, thus obtaining the in-ceram zirconia materials with translucency. The invention also provides the in-ceram zirconia materialsprepared by the method. With the integral transmittance of visible light of 17.50-18.01%, the in-ceram zirconia materials can meet the requirement of the oral clinical in-ceram restorations for beauty.

Method for producing high-whiteness aluminum hydroxide micropowder by dissolving bauxite with liquid caustic soda

The invention provides a method for producing high-whiteness aluminum hydroxide micro powder by dissolving bauxite with liquid caustic soda. The method mainly comprises the steps of alkali dissolution, solid-liquid separation, purification and separation, seed precipitation and drying. Purification and separation are conducted, specifically, overflow obtained through solid-liquid separation is subjected to impurity removal through a leaf filter, a sodium aluminate refined solution is obtained, and the content of suspended matter in the sodium aluminate refined solution is smaller than 0.02 g/L; aluminum oxide is added into the sodium aluminate refined solution for adsorption purification, and a high-transmittance purified solution is obtained; and the purified liquid is separated to obtain a decomposed stock solution, and the content of suspended matters in the decomposed stock solution is smaller than 0.015 g/L. According to the method, various bauxite can be treated, compared with a redissolution ...

Aqueous transfer glue and preparation method thereof

The invention relates to an aqueous transfer glue which is prepared through an emulsion polymerization with methyl methacrylate, butyl acrylate monomer, acrylic acid 2- Octyl Nitrite, a functional monomer, an initiator, an emulsifier buffering agent, a functional auxiliary agent, a PH adjusting agent and deionized water. The invention also provides the preparation method of the aqueous transfer glue. The invention is characterized by simple technology, low cost, environment friendliness and the ultimate product meets the 16 limitation requirements on harmful substances in the tobacco industry. Meanwhile, the golden paperboard and silver paperboard prepared from the aqueous transfer glue provided in the invention have better flexibility resistance and brightness than those of the products currently for sale. In particular, regarding to help with the limitation of harmful substances, the aqueous transfer glue is far better than the carboxylated styrene-butadiene rubber latex used in the current ...

Aqueous soft glue and preparation method thereof

The invention provides aqueous soft cover rubber applied to glue of plastic-plastic composite materials and a preparation method thereof. The aqueous soft cover rubber is mainly prepared from raw materials of crylic acid, butyl acrylate, styrene, a functional monomer, an initiating agent, an emulsifying agent, a buffering agent, a functional auxiliary agent, a pH regulating agent and softened water through a reaction. Due to the adoption of an aqueous medium, the aqueous soft cover rubber has no pollution, eliminates harm to bodies of producers and users of an organic solvent, greatly reduceshidden dangers of fire disasters in a use process, has no residual harmful substances among compound films, improves the cohesive force of the compound films, solves a balanced relation between the cohesive force and initial adhesive force and bonding strength and can overcome the operation problems of bonding strength, leveling, and the like of a compounded product, and the compounded product can be ...

Vertical door closer footing

The utility model discloses a vertical door closer footing, including the footing box, establish footing adjusting device in this footing box, this footing adjusting device's one end is the arc structure, and the other end is bar -type texture, the middle part of arc structure be equipped with the angle modulation structure, a bolt location structure is respectively established to the both sides of this arc structure, bar -type texture on be equipped with bolt elastic structure. In when construction, the position that only need prefabricate the footing box during installation door closer, can be based on and close an angle, and that adjusts the door closer at will closes an angle and door closer pre -compaction angle.

Water-based ink emulsion for paper and preparation method thereof

The invention relates to water-based ink emulsion for paper, which is prepared mainly from acrylic acid, butyl methacrylate, ethyl acrylate, methyl methacrylate, trihydroxymethyl triacrylate, potassium peroxydisulfate, phenol ether sulphate, sodium bicarbonate, functional assistant, ammonia water and softened water and by reactions. The invention also provides the preparation method of the water-based ink emulsion for paper. The water-based ink emulsion exerts little influence on a paper substrate, has a high color showing performance, is wear-resistance and has high fouling resistance. In addition, the water-based ink emulsion is antiaging, nontoxic, free from peculiar smell, safe and reliable.

New application of membranous tripeptide in resisting craniocerebral injury

The invention relates to a novel application of a membrane linked tripeptide (Annexin-A1 short peptide, ANXA1sp) in resisting craniocerebral injury, in particular to a novel application of the membrane linked tripeptide (ANXA1sp) in resisting craniocerebral injury. Under the condition of therapeutic administration, the membranous tripeptide can obviously improve the neurological function of a mouse after craniocerebral injury and alleviate motor function injury. The applicant of the invention therapeutically gives different concentrations of membranous tripeptides to an adult mouse simulating craniocerebral injury, and performs neurological function scoring and motor function evaluation on the mouse. After injury, a certain concentration of membranous tripeptide is therapeutically given, so that the neurological function score of a mouse after craniocerebral injury can be obviously reduced, and the motor function of the mouse is improved. According to the method disclosed by the invention ...

Acute hypoxia injury resistance use of teprenone

The invention relates to the action of anti-acute hypoxia injury of teprenone, under the condition of oral administration of the teprenone, the survival ratio of chmice under the acute hypoxia condition can be obviously improved, the survival time can be prolonged. The invention pours the teprenone with different concentrations into the stomach of the adult chmice, after four hours, the chmice is arranged in the acute hypoxia environment, the survival ratio and the survival time are observed, so that the survival ratio of the animal can be improved and the survival time of the animal can be prolonged under acute hypoxia condition by pouring the teprenone with certain concentration into the stomach in advance, the anti-acute hypoxia injury capability of the chmice can be improved. According to the method of the invention, the teprenone is administrated at suitable time with suitable dose, which can improve the anti-acute hypoxia injury capability of the chmice, powerful evidences can be ...

Elevated platform for detecting animal anxiety and application method thereof

The invention relates to a novel elevated circular platform for detecting animal anxiety and an application method thereof. An anxiety model is prepared by utilizing the mental conflict between the fear for high altitude and the exploration instinct of animals. According to the sizes of the animals, the circular platform with the certain diameter is prepared and placed at the corresponding height, the radius of the platform is divided into a plurality of equal parts, and therefore the platform is divided into a plurality of continuous areas. The safety is sequentially reduced from the circle center to the periphery and forms continuous distribution. After the animals are placed in the central area, the standing time of the animals in each area within the specific time is analyzed, the animals with the lower anxiety level will explore for a longer time in the area with the low safety, and the animals with the high anxiety level will explore for a longer time in the area with the high safety ...

Waterborne varnish and preparation method thereof

The invention relates to waterborne varnish. The waterborne varnish is mainly prepared from acrylic acid, butyl acrylate, ethyl acrylate, methyl methacrylate, functional monomers, sodium hydrosulfite, sodium alkyl diphenyl ether disulfonate, buffering agents, functional auxiliaries, a pH regulator and softened water through reactions. The invention also provides a preparation method of the waterborne varnish. The waterborne varnish has the following beneficial effects: the waterborne varnish has low impact on the paper base material, has high glossiness, good adhesion, strong pollution resistance and good water, acid and alkali resistance, is resistant to wear and aging, is nontoxic and free from extraneous odor and is safe and reliable.

Waterborne self-adhesive and preparation method thereof

The invention provides a waterborne self-adhesive used for waterborne acrylic-polyurethane paper, which is mainly prepared by reacting acrylic acid, butyl acrylate, styrene, a functional monomer, an initiator, an emulsifier, a buffering agent, functional auxiliaries, a pH regulator, softened water, surface activity isolating and stabilizing agents, light calcium bicarbonate and 264 dispersion. Theinvention also provides a preparation method of the waterborne self-adhesive. The waterborne self-adhesive is nontoxic, safe and environment-friendly, is simple in operation, does not change equipment and can directly replace the self-adhesives of natural rubbers for coating. Compared with the self-adhesives of the natural rubbers, the physical performance of the waterborne self-adhesive is not changed substantially, the waterborne self-adhesive well maintains the advantages of the original self-adhesives of the natural rubbers, the cost of the waterborne self-adhesive is greatly lowered andthe ...

Three -dimensional automatic door closer footing

The utility model discloses a three -dimensional automatic door closer footing, including the footing box, be equipped with footing adjusting device in this footing box, this footing adjusting device's one end is the arc structure, and the other end is bar -type texture, the middle part of arc structure be equipped with the internal spline groove, this internal spline inslot is equipped with door closer location structure, the door closer location structure outside is equipped with the external splines, door closer constant head tank upper portion is equipped with the door closer constant head tank, the both sides of this arc structure respectively establish a bolt location structure, bar -type texture on be equipped with bolt elastic structure.

Electric connector and electric connector combination

The invention provides an electric connector and a combination thereof. The electric connector comprises an insulating seat body which comprises a front end and a rear end; the front end is provided with a slot and a plurality of terminal slots which are respectively positioned on the upper side and the lower side of the slot; the first group of conductive terminals are correspondingly accommodated in the terminal grooves on one side; each conductive terminal comprises a first contact part, a tail end and a main body connected between the first contact part and the tail end; the first group of conductive terminals comprises a plurality of signal terminals and a plurality of grounding terminals, the first contact part of at least one grounding terminal extends forwards to form a second contact part, and the second contact part of the at least one grounding terminal deviates towards the adjacent signal terminal along the transverse direction; the second contact part is located at a position ...

Spermatozoon activity fast detecting reagent kit and its preparation and use method

The invention discloses a sperm activity rapid testing kit, a preparation method and a using method thereof, and the kit comprises a sample collection part and a test part, wherein, the sample collection part comprises a sample collector and a sample swimming pool; the shape of the sample collector is a circular small bowl, the bottom part thereof is provided with a concave cylindrical small hole; the sample swimming pool is a cylindrical container, in which sperm swimming liquid is contained, both ends of the container are provided with sealing films for sealing; the outer diameter of the sample swimming pool is smaller than the inner diameter of the small hole of the bottom part of the sample collector, then the sample swimming pool can be inserted in the small hole of the bottom part of the sample collector; the test part comprises a test plate, dyeing liquid, lotion and a sampling dropper; the test plate comprises an outer shell and a substrate, the center of the outer shell is provided ...