321 results about "Polymer adhesive" patented technology

The invention provides a diaphragm adhesive composition, a diaphragm and a lithium ion battery, the solid content of the diaphragm adhesive composition is 10-40wt%, and when the solid content of the diaphragm adhesive composition is diluted to 5wt%, the surface tension of a diluent is not less than 28mN / m; the diaphragm adhesive composition comprises polymer particles A and a polymer adhesive B, wherein the solid mass ratio of the polymer particles A to the polymer adhesive B is 100: (3-30); the particle size of the polymer particles A is 0.2-10 [mu] m, and the glass transition temperature of the polymer particles A is 30-90 DEG C; and the polymer adhesive B is a water-based emulsion type adhesive, the particle size of polymer particles contained in the polymer adhesive B is 0.1-1 mu m, and the glass transition temperature of the polymer adhesive B is-50-20 DEG C. The diaphragm adhesive composition disclosed by the invention is not easy to spread on a base material, can prevent an adhesive glue solution from being quickly diffused on the surface of a diaphragm, forms controllable, uniform-size and uniformly-distributed adhesive coating points on the surface of the base material, and has small influence on the air permeability of the diaphragm.

The invention relates to the technical field of antibacterial and antifouling fabrics, provides a preparation method of an antibacterial and antifouling fabric, and solves the problem of poor fabric durability caused by single functional component and lack of physical protection in the prior art. The preparation method comprises the following steps: S1, preparing MOFs loaded antibacterial fibers: blending a metal organic framework antibacterial composite nanomaterial and a polymer matrix material, and carrying out melt spinning to prepare the MOFs loaded antibacterial fibers; s2, constructing a self-cleaning functional coating: dispersing the fluorinated nanoparticles and a polymer adhesive in a solvent to prepare a self-cleaning coating solution; s2, performing surface activation treatment on the MOFs-loaded antibacterial fiber obtained in the step S1, soaking the MOFs-loaded antibacterial fiber in the self-cleaning coating liquid, and performing pulling and curing to form a bionic micro-nano structure coating on the surface of the MOFs-loaded antibacterial fiber so as to obtain a functional composite fiber; s3, spinning forming: taking the functional composite fibers obtained in the step S2 as warp yarns and / or weft yarns, and weaving to obtain the antibacterial and antifouling fabric.

The invention relates to the technical field of batteries, in particular to a battery which comprises a positive plate, a negative plate and a diaphragm located between the positive plate and the negative plate, the diaphragm comprises a base material layer and a ceramic layer located on the surface of one side of the base material layer, a first polymer glue layer is arranged on the surface of the side, away from the base material layer, of the ceramic layer, and a second polymer glue layer is arranged on the surface of the side, away from the ceramic layer, of the base material layer. The diaphragm in the battery can provide certain binding force for the expansion of the silicon negative electrode, the contact resistance at an interface is reduced, the stress acting on the positive plate during the expansion of the silicon negative electrode is reduced, and the transmission rate of lithium ions in the battery is improved, so that the cycle performance and the safety performance of the battery are improved.

The invention discloses a preparation process of a high-toughness anti-cracking alkali-activated geopolymer cementing material, which comprises the following steps: (1) mixing steel slag powder and a phosphoric acid solution, heating, preserving heat, reacting, drying to remove moisture, and grinding to obtain pretreated steel slag powder; and (2) uniformly mixing brucite powder, potassium silicate and water to form slurry, then adding basalt fibers into the heated slurry, standing, separating out the fibers after standing, uniformly mixing the fibers with the pretreated steel slag powder, and drying to obtain pretreated fibers. And (3) placing the pretreated fiber in a closed container containing carbon dioxide and water vapor, and carrying out heat preservation and maintenance to obtain the modified fiber. And (4) weighing the following raw materials according to the following proportion: aluminum-silicon solid waste micro powder, coarse aggregate, fine aggregate, the modified fiber, an alkali activator and a water reducing agent. The preparation method comprises the following steps: uniformly mixing the raw materials, adding water and uniformly stirring. The fiber subjected to surface treatment effectively improves the crack resistance of the geopolymer cementing material.

The invention provides an alkali metal group ion selective permeable membrane, a preparation method and a lithium, rubidium and cesium extraction method and system, and the membrane is prepared by taking polyphenylene sulfide, Zr (HPO4) 2 and a high-molecular polymer adhesive as raw materials through mixing, fibration treatment and compression molding processes. Based on the weak dipole adsorption characteristic between the sulfur position of high-crystallization polyphenylene sulfide and alkali metal cations, efficient screening of monovalent alkali metal ions (Li < + >, Rb < + > and Cs < + >) and multivalent impurity ions (Mg < 2 + >, Al < 3 + > and Fe < 2 + >) is achieved, and the method can be used for extracting rubidium and cesium. The ion selective permeable membrane has excellent mechanical properties, high separation efficiency and corrosion resistance, and is low in production cost; and finally, the multiple targets of lepidolite leaching liquid impurity removal and lithium rubidium cesium synergistic extraction are achieved.

The invention discloses a double-liquid magnesium phosphate early-strength high-strength grouting material and a preparation method thereof.The grouting material is composed of a liquid A and a liquid B. The liquid A is composed of powder A and water in parts by weight and comprises dead burned magnesia powder, a defoaming agent, steel slag powder, a retarder I and water, and the liquid B is composed of powder B and water in parts by weight and comprises powder B and water in parts by weight. Wherein the monopotassium phosphate, the superfine powder, the polymer rubber powder, the retarder II and the water have the advantages that the stirring time is shortened, the setting time is controllable, the flowability is good, the repair requirement can be met more quickly, the construction period is shortened, and the cane sugar and the borax are used as the retarders, so that the setting time can be controlled, and the early strength can be improved; surplus phosphate in a grouting material matrix is consumed by using the steel slag powder, so that some amorphous gel products can be generated, and the mechanical property is improved; the redispersible latex powder is utilized to form a polymer film in the slurry to wrap a hydration product, so that the water resistance is improved, and the synergistic modification effect is achieved.

The invention belongs to the technical field of soil curing materials, and relates to a salinized soil curing agent and a preparation method thereof. The composite material comprises the following components in parts by mass: 20-40 parts of a bio-based polymer cementing material; 10 to 20 parts of modified bentonite; 15 to 30 parts of superfine slag powder; 1 to 5 parts of nano silicon dioxide; 5 to 15 parts of magnesium phosphate cement; 3-8 parts of a plant fiber reinforced material; 0.5 to 2 parts of a dispersant; and 2-6 parts of a composite slow-release salt-resistant additive. The problems that a traditional curing agent is weak in salt corrosion resistance and poor in durability in salinized soil are solved, the mechanical property and long-term stability of cured soil are remarkably improved, and the environment-friendly, efficient and high-adaptability salinized soil reinforcing effect is achieved.

The invention provides a polymer binder generation method and device, and the method comprises the steps: obtaining a polymer binder data set; inputting the molecular structure into a generation model to generate a polymer binder candidate structure; inputting the polymer binder candidate structure into a prediction model to predict a candidate parameter data set, the candidate parameter data set comprising candidate physical parameters, candidate chemical parameters and candidate performance parameters; performing molecular dynamics simulation according to the candidate structure, the candidate physical parameters, the candidate chemical parameters and the candidate performance parameters of the high-molecular binder, and determining performance evaluation indexes; and based on the performance evaluation index, optimizing the candidate structure of the high-molecular binder, and outputting the target high-molecular binder. According to the method and the device, the optimized target polymer binder is generated, the simulation cost is reduced, and the material performance is improved.

The present invention therefore relates to aqueous polymer latices of copolymers obtainable by aqueous emulsion polymerisation of ethylenically unsaturated monomers M, which comprise i. 5 to 90% by weight, in particular 10 to 70% by weight, especially 10 to 50% by weight, based on the total amount of monomers M, of a monomer M1, which is 1-hexyl acrylate; ii. 0 to 70% by weight, based on the total amount of monomers M, of at least one monomer M2, which is selected from C2-C5-alkyl esters of acrylic acid, except for tert-butyl acrylate, C7-C20-alkyl esters of acrylic acid and C5-C20-alkyl esters of methacrylic acid and mixtures thereof; iii. 5 to 70% by weight, based on the total amount of monomers M, of at least one monomer M3, which is selected from tert-butyl acrylate, C1-C4-alkyl esters of methacrylic acid, C5-C20-cycloalkyl esters of acrylic acid, C5-C20-cycloalkyl esters of methacrylic acid, C5-C20-cycloalkylmethyl esters of acrylic acid, C5-C20-cycloalkylmethyl esters of methacrylic acid, where cycloalkyl in the aforementioned monomers is mono-, bi- or tricyclic and where 1 or 2 nonadjacent CH2 moieties of cycloalkyl may be replaced by oxygen atoms and where cycloalkyl may be unsubstituted or carry 1, 2, 3 or 4 methyl groups, and monovinyl aromatic monomers, methylene-gamma-butyrolactone and mixtures thereof; where the total amount of monomers M1 and M2 is in the range from 10 to 90% by weight, based on the total amount of ethylenically unsaturated monomers M, and where the total amount of monomers M1, M2 and M3 is at least 90% by weight, based on the total amount of ethylenically unsaturated monomers M. The present invention also relates to a process for producing the aqueous polymer latices of the present invention. The present invention also relates to the use of these polymer latices as binders in waterborne coating compositions and waterborne adhesive compositions, in particular as binders in waterborne coating compositions.

A polymer capsule jacketed projectile includes a preformed core enclosed by a nose capsule and a base capsule. The preformed core has an ogive region tapering into a core nose that is connected to a core base by the bearing surface. The nose capsule engages the base capsule around the bearing surface at a jacket joint to form the polymer capsule jacket. The outer surface of the polymer capsule jacket may be seamless, having no visible edges or protrusions, or a cannelure may be formed in the outer surface at the location of the jacket joint. The nose capsule and the base capsule are dip molded and the preformed core is pressed into engagement with both capsule pieces to form the polymer capsule jacketed projectile.

The utility model discloses a calcium silicate board composite inner wall board which is installed on a wall face in a vertical state, the composite inner wall board comprises a calcium silicate board and metal plates bonded to the two sides or one side of the calcium silicate board, the metal plates are aluminum plates or stainless steel plates, and the thickness of the metal plates is 0.2 mm-0. 3mm. Compared with boards adopted in an existing subway station, the calcium silicate board composite inner wall board is thinner and lower in cost. The metal plate and the calcium silicate plate are bonded through the polymer adhesive film, the covered edges facing the calcium silicate plate are formed on the left side and the right side of the metal plate, and the edge warping phenomenon of the two sides of the composite inner wall plate is prevented.

The invention relates to a binder composition for manufacturing a wood-based material, a method for manufacturing such a wood-based material and such a wood-based material. In order to provide a binder composition for manufacturing a wood-based material, in which the speed of curing can be specifically controlled and at the same time diffusion of the binder into the wood material to be bound is prevented in the best possible way, thereby ensuring a safe, fast and cost-effective manufacturing process with the lowest possible use of binder, fast and cost-effective manufacturing process with the lowest possible binder consumption without reducing the product quality, it is provided that the binder composition comprises an organic phase having at least one polymer adhesive, an aqueous phase, at least one phase transfer catalyst for accelerating the curing of the polymer adhesive and a hydrophilizing agent comprising or formed from at least one silane compound for increasing the hydrophilicity of the polymer adhesive and / or for reducing the penetration of the polymer adhesive into the material of the wood-based material to be bonded.

The invention discloses a preparation method of a polymer adhesive capable of broad-spectrum adhesion based on a hydrogen bond-containing amphiphilic deep eutectic solvent of an acrylic acid derivative, and belongs to the technical field of polymer adhesives. The preparation method of the adhesive comprises the following steps: S1, mixing a hydrogen bond donor and a hydrogen bond acceptor, heating and stirring until the mixture is clarified to obtain a eutectic solvent; s2, adding an acrylate monomer and an acrylamide monomer into the eutectic solvent, and uniformly mixing to obtain a mixture; and S3, sequentially adding a chemical cross-linking agent and a photoinitiator into the mixture, and carrying out photo-initiation to obtain the adhesive. The adhesive prepared by the invention has the characteristics of high adhesive power, debonding as required, excellent waterproofness, efficient VOCs adsorption, adaptability to hydrophilic and hydrophobic materials and the like.

The invention belongs to the technical field of solar photovoltaics, and provides novel efficient light conversion photovoltaic glass and a preparation method thereof.The preparation method comprises the steps that glass colored glaze ink corresponding to the novel efficient light conversion photovoltaic glass is prepared, and glass powder, a light conversion material, pearl powder, light diffusion particles and an organic carrier are mixed; the content of the light conversion material is more than 5% and less than 30%; the particle size of the pearl powder is larger than 5 microns and smaller than 20 microns, and the content is larger than 1% and smaller than 10%; the content of the light diffusion particles is greater than 0.1% and less than 5%; printing the prepared glass colored glaze ink on the surface of the front plate glass layer; carrying out toughening treatment on the front plate glass layer printed with the glass colored glaze printing ink, and sintering the glass colored glaze printing ink to form a glass colored glaze layer; the battery piece is bonded to the front plate glass layer with the glass colored glaze layer through the upper adhesive film layer, the back plate glass layer is bonded to the battery piece through the lower polymer adhesive film layer, and preparation of the novel efficient light conversion photovoltaic glass is completed.

The invention discloses sound insulation mortar, a preparation method, a sound insulation mortar system and a construction technology, and belongs to the field of building materials. The phosphogypsum-based low-carbon thermal insulation and sound insulation mortar is prepared from the following raw materials in parts by weight: 50 to 60 parts of phosphogypsum, 20 to 30 parts of filler, 10 to 15 parts of inorganic admixture, 10 to 15 parts of glass beads, 5 to 10 parts of aerogel, 0.1 to 0.5 part of water-retaining agent, 1 to 4 parts of polymer rubber powder, 0.02 to 0.05 part of retarder and 0.2 to 0.5 part of water reducing agent. The ardealite-based low-carbon thermal insulation and sound insulation mortar is compact in structure and good in crack resistance, and has an excellent sound insulation effect on the premise of ensuring that the mechanical property reaches the standard. The thermal-insulation and sound-insulation material is good in fire resistance and outstanding in aging resistance and durability in the long-term use process, has convenient construction performance and can fully meet the comprehensive use requirements of constructional engineering for thermal-insulation and sound-insulation materials.

Disclosed is a method for manufacturing a separator having a polymer adhesive layer. The method includes preparing an aqueous polymer slurry comprising a particulate binder polymer having a glass transition temperature Tg of 20° C. or more and a particle size D50 of 300 to 800 nm, a wetting agent, and a particulate acrylic binder polymer having a glass transition temperature Tg of −10° C. or less and a particle size D50 of 100 to 200 nm, and coating the aqueous polymer slurry on at least one surface of a polyolefin-containing porous membrane having pores and drying the aqueous polymer slurry.

The invention discloses a three-dimensional porous self-supporting electrode constructed by in-situ growth of copper nanoparticles on the surface of foamed nickel for hydrogen evolution by water electrolysis and a preparation method of the three-dimensional porous self-supporting electrode. The preparation method of the three-dimensional porous self-supporting electrode constructed by in-situ growth of the copper nanoparticles on the surface of the foamed nickel comprises the following steps: taking the foamed nickel as a working electrode, taking a mixed solution composed of a copper salt, a chlorine salt, an inorganic acid and deionized water as an electrolyte, and carrying out electrodeposition by adopting a timing coulometric method to obtain the three-dimensional porous self-supporting electrode constructed by in-situ growth of the copper nanoparticles on the surface of the foamed nickel; the three-dimensional porous self-supporting electrode constructed by in-situ growth of the copper nanoparticles on the surface of the foamed nickel is obtained. According to the preparation method, the self-supporting electrode without the adhesive is prepared through the one-step electrodeposition method with the hydrogen bubbles as the dynamic template, no precious metal participates in the self-supporting electrode, and the problems that active sites are blocked, the conductivity is reduced or gas transmission is inhibited due to the fact that a Nafion solution and other polymer adhesives with poor conductivity are used in a traditional powdery catalyst can be effectively solved. The electrode prepared by the invention has excellent HER performance and good stability.

The invention belongs to the technical field of geopolymer materials, and particularly provides a method for preparing a geopolymer cementing material based on alkaline solution modified dolomite. The method specifically comprises the following steps: mixing an alkali-activated solution with dolomite to prepare a modified alkali-activated solution; the dolomite is mixed with a geopolymer precursor, the geopolymer cementing material is obtained, and the dolomite accounts for 5%-10% of the mass of the polymer precursor. According to the invention, precipitation of Ca < 2 + > and Mg < 2 + > or generation of Ca (OH) 2 in dolomite is promoted in an alkaline environment, the reaction activity is improved, the material strength is improved while the coagulation time is shortened, and the problems of delayed coagulation and mechanical property reduction caused by traditional direct addition of dolomite are solved.

The invention provides a battery diaphragm, a battery and electric equipment. The battery diaphragm comprises a base membrane and a polymer rubber material arranged on the surface of at least one side of the base membrane, and the swelling rate of the polymer rubber material in electrolyte is less than 15%. The swelling ratio of the polymer rubber material in the electrolyte is less than 15%, so that the polymer rubber material is difficult to swell in the electrolyte, the cohesive force of the polymer rubber material is prevented from being reduced after the polymer rubber material swells, the battery diaphragm can keep better adhesive property in the electrolyte, and the battery diaphragm and a pole piece can be kept well jointed, so that the service life of the battery diaphragm is prolonged, and the service life of the battery diaphragm is prolonged. And the prepared battery can maintain relatively good performance.

The embodiment of the invention belongs to the technical field of electrochemical gas sensors, and relates to a preparation method of a counter electrode of an NO sensor, which comprises the following steps: adding a polymer adhesive into an organic solvent to prepare a polymer adhesive mother solution; mixing manganese dioxide powder with the polymer adhesive mother liquor, and stirring to form uniform slurry; coating a substrate with the slurry, and performing drying treatment to form a counter electrode plate; and putting the counter electrode plate into an environment with reducing gas or inert gas to carry out high-temperature reduction treatment so as to improve the oxygen vacancy concentration, thereby obtaining the counter electrode of the NO sensor. The invention further provides an NO sensor and an NO detection method. The counter electrode of the NO sensor and the NO sensor prepared by the embodiment of the invention have the advantages of low cost and high anti-interference capability while keeping high oxygen reduction catalytic activity, and are particularly suitable for high-selectivity and high-sensitivity detection of NO gas in the fields of environmental monitoring, medical diagnosis and the like.

The utility model belongs to the technical field of rubber products, and particularly relates to a macromolecular rubber strip convenient to cut off, which comprises two rubber strip side edges, two side edge grooves are arranged on the side surfaces of the rubber strip side edges, a rubber strip top edge is fixedly mounted at the top of each rubber strip side edge, and a rubber strip top edge is fixedly mounted at the bottom of each rubber strip top edge. The bottom of the adhesive tape top edge is fixedly connected with the tops of the two adhesive tape side edges, top edge grooves are formed in the side faces of the adhesive tape top edge, and clamping blocks are fixedly installed on the side faces of the adhesive tape side edges. The mounting stability of the device can be improved through two clamping modes, the thickness of materials at the positions of the side edge grooves, the top edge grooves, the connecting plate grooves and the clamping groove grooves formed in the surface and the interior of the device is small, and the number of the materials is large, so that convenience can be provided for cutting-off work when the adhesive tape is cut off.

The application relates to a nano-imprinting method and device, and belongs to the technical field of nano-imprinting, and solves the problems that the existing method can cause polymer overflow outside a glass base body or insufficient filling of micro-nano structures. The method comprises the following steps: (1) spraying a polymer glue layer on one side of a soft template provided with a micro-nano pattern, so that the polymer glue layer covers the micro-nano pattern, and the thickness of the polymer glue layer is greater than the thickness of the micro-nano pattern; (2) contacting the side of the soft template sprayed with the polymer glue layer with the glass base body, performing imprinting, irradiating by using an ultraviolet lamp, removing the soft film plate with the micro-nano pattern after the polymer glue layer is solidified, and leaving the polymer glue layer with the micro-nano pattern on the surface of the glass base body, so that the glass base body with the micro-nano pattern is obtained. The method can avoid polymer overflow and incomplete structure filling.

The invention discloses an adhesive as well as a preparation method and application thereof, and belongs to the technical field of polymer adhesives. The invention discloses an adhesive for bonding fluororubber and a fluorine-containing inert material, which is prepared by adopting a method of bulk polymerization of a silane coupling agent and vinyl-terminated fluorosilicone oil. According to the adhesive, the fluororubber and the fluorine-containing inert material can achieve excellent bonding strength, and the adhesive is simple in preparation process, low in price, easy to operate and easy to industrialize and has a good application prospect.

This invention belongs to the field of polymer materials, specifically relating to a low-heat-shrinkage polymeric film for laser drilling and its preparation method. The film comprises modified polyphenylene ether resin, vinyl-containing benzoxazine resin, a specific cationic initiator, a toughening agent, and inorganic modified fillers: gadolinium lanthanum zirconate core-shell nanocrystals and lithium aluminum borosilicate nanowires. The preparation method includes: first, surface-treating the two inorganic fillers with a silane coupling agent and then dispersing them in a solvent to obtain a slurry; then, mixing this slurry with the modified polyphenylene ether resin, vinyl-containing benzoxazine resin, cationic initiator, and toughening agent to form a homogeneous adhesive; finally, coating the adhesive onto a carrier film and drying and curing it at three temperature stages from low to high to obtain the finished film. The film prepared by this method exhibits extremely low heat shrinkage during laser drilling, effectively controlling resin protrusion or indentation defects on the hole wall, and significantly improving the quality and reliability of micropore processing.

The invention discloses oxide solid electrolyte nanoparticles, a preparation method of the oxide solid electrolyte nanoparticles and application of the oxide solid electrolyte nanoparticles in a positive plate for an oxide solid electrolyte-based low-temperature battery. The oxide solid electrolyte nanoparticles are prepared by adding a novel amphiphilic molecule dispersing agent in a sanding process to realize perfect dispersion; the effect of stabilizing the nano particles is achieved; the amphiphilic molecular dispersing agent is alkane amidoxime; the positive plate comprises the following solid components; the solid component comprises a multifunctional polymer adhesive; the multifunctional polymer has at least two or more functional groups of a carboxylic acid group, a sulfonic acid group and an amidoxime amine group. According to the oxide solid electrolyte nanoparticle, the preparation method thereof and the positive plate for the oxide solid electrolyte-based low-temperature battery disclosed by the invention, the problem of agglomeration in the preparation process of the nanocrystallization solid electrolyte nanoparticle can be effectively solved, and a battery product with high stability and high low-temperature performance is obtained.

Dichlofenac-based sustained release medical plasters, in particular medical plasters based on the sodium salt of dichlofenac, whose formulation allows the active ingredient to be released continuously and at a locally therapeutically active concentration over 24 hours, and also polymer adhesive matrices (PSA) for medical plasters based on the sodium salt of dichlofenac are described.

The present application belongs to the technical field of polymer adhesive material, and particularly relates to a resin composition for bonding polyolefin material and a preparation method thereof. The present application is prepared by formula screening optimization, and the ratio of the storage modulus E'30 at 30 DEG C to the storage modulus E'130 at 130 DEG C is greater than 100. The polyurethane resin is used in combination with butadiene-styrene copolymer with butadiene content greater than 60% and butadiene-styrene-vinylpyridine copolymer, so that the adhesive with good fusion and good adhesion to polyethylene base material is obtained. The allyl silicon modified pyridine monomer, allyl silicon modified carbazole monomer and lauryl acrylate are polymerized, and the prepared acrylate polymer is used in combination with the polyurethane resin. The pyridine group, tertiary butyl group, carbazole group and silicon atom in the acrylate polymer and the dodecyl group in the lauryl acrylate are used to improve the adhesion strength to the polyolefin base material.

The application discloses an environment-friendly anti-deformation reed-wood composite shaving board and a preparation method thereof, belongs to the technical field of the board material, and the raw material of the reed-wood composite shaving board comprises wood chips, reed fibers, basalt fibers, lignin fibers, plant extracts, nano silicon dioxide, acetylated di-starch phosphate, C30-45 alkyl cetyl stearyl dimethicone cross-linked polymer, PEG-10 polydimethylsiloxane-vinyl dimethicone cross-linked polymer, methyl methacrylate cross-linked polymer, MDI adhesive and organic silicon waterproof agent in specific proportions. The components are used in cooperation, the shaving board is prepared in a directional mode, has excellent mechanical properties, is resistant to cracking and deformation, and is improved in the environmental protection performance, and the usage amount of glue is reduced. The novel formaldehyde-free adhesive and the plant extracts are adopted to replace traditional formaldehyde-containing glue and mold-proof and insect-proof agents, formaldehyde release is effectively avoided, and a healthier home decoration board selection is provided for consumers.

The application discloses a medical packaging paper and a preparation method and application thereof, and belongs to the technical field of medical packaging materials. The method comprises the following steps: according to a target impregnation amount, utilizing an impregnation parameter correlation formula representing a quantitative relationship among the impregnation amount, impregnation liquid concentration, impregnation temperature and impregnation time, reversely solving and setting impregnation parameters; immersing selected medical packaging raw paper into prepared water-based polymer latex impregnation liquid, and performing impregnation treatment according to the set impregnation parameters, and then performing drying balance treatment to obtain the medical packaging paper. The method realizes accurate controllability of the impregnation amount and process stability, eliminates interference of environmental and operation errors, and ensures consistency of paper performance between batches. Under the core premise of guaranteeing high air permeability of the medical packaging paper, the mechanical strength and heat sealing performance of the paper are greatly improved, and the comprehensive performance balance of high strength, high air permeability and easy heat sealing is successfully achieved.

Provided is a method for producing a polymer latex, comprising a step for obtaining an emulsion by emulsifying a polymer solution of a synthetic polyisoprene and / or styrene-isoprene-styrene block copolymer in water in the presence of rosin and / or a metal salt of rosin; and a step of removing the organic solvent from the emulsion, in the rosin and / or the metal salt of the rosin, the content ratio of the total of abietic acid, neoabietic acid, pinolenic acid and salts thereof is 5% by weight or less, the content ratio of dehydroabietic acid is 80-100% by weight, and the content ratio of the rosin and / or the metal salt of the rosin is 5% by weight or less. The content ratio of the rosin and / or the metal salt of the rosin in the polymer latex is more than 1.5 parts by weight with respect to 100 parts by weight of the total of the synthetic polyisoprene and / or the styrene-isoprene-styrene block copolymer contained in the polymer latex.