81 results about "Latex particle" patented technology

The invention discloses reactive compatible ACR-PHA core-shell latex and application thereof, and belongs to the field of polymer chemistry and material science. The latex comprises composite particles with core-shell, gradient core-shell, raspberry-shaped or Janus heterostructure, interfaces of ACR phase and PHA phase of the latex are connected through covalent bonds, and the compatibility problem of physical blending is fundamentally solved. The latex particles have a Z-average particle size of 80-400 nm, a PDI of less than or equal to 0.30, and a minimum film formation temperature (MFFT) of-10 to 12 DEG C. The coating prepared by the invention has excellent high-humidity barrier stability (WVTR is less than or equal to 65g / m.d), low-temperature rapid heat sealability, water resistance, oil resistance and complete recoverability, does not contain PFAS, is an ideal alternative scheme of a traditional PE (Polyethylene) spraying film, and is suitable for the fields of food packaging paper, paper cups, bowls and the like.

The invention discloses polybutadiene latex, a preparation method thereof and transparent ABS (Acrylonitrile Butadiene Styrene) resin. In the preparation process of the polybutadiene latex, the emulsifier is additionally added at a relatively high conversion rate to promote the reaction to generate part of latex particles with small particle sizes. When the latex prepared by the method is used for further preparing the transparent ABS resin, since the latex with the particle size of 30-70nm has a rayleigh scattering effect to a certain extent, a small amount of blue light can be scattered, so that the yellow index of the resin is reduced, and the prepared transparent ABS has better hue.

The application discloses a kind of integrated robot latex particle automatic ultrasonic dispersion equipment, including rack, quick-change head device, workpiece fixture rack, ultrasonic water bath and robot;Workpiece fixture rack is equipped with transfer clamp and placement slot, and the movable end of robot is equipped with clamp joint;Robot can drive clamp joint to butt joint or release quick-change head device, and drive quick-change head device to carry out secondary pressing positioning to sample bottle in placement slot;Robot can drive clamp joint to butt joint or release the transfer clamp of workpiece fixture rack, and robot can drive workpiece fixture rack and sample bottle thereon to carry out multidimensional composite motion in ultrasonic water bath.The equipment can realize the semi-automatic linkage operation of "feeding-positioning-ultrasonic dispersion-discharging", reduce manual intervention, guarantee the stability and consistency of latex particle dispersion in sample bottle in large-scale mass production process, significantly improve production efficiency and product quality, and provide key technical support for process upgrading of in-vitro diagnosis industry.

The invention relates to a low-VOCs acrylic resin water-based coating and a preparation method thereof, and belongs to the technical field of high polymer materials and chemical coatings, the low-VOCs acrylic resin water-based coating comprises the following raw materials by weight: 40-80 parts of a modified acrylic resin emulsion, 0-30 parts of a pigment filler, 1-5 parts of a water-based auxiliary agent, 10-30 parts of deionized water and 0.5-2 parts of a post-addition cross-linking agent; the modified acrylic resin emulsion is prepared from a core-layer monomer mixture and a shell-layer monomer mixture through a core-shell emulsion polymerization process, and the shell-layer monomer mixture comprises a functionalized internal plasticizing monomer and a self-crosslinking functional monomer. The monomer is prepared by reacting long-chain fatty alcohol with diisocyanate to prepare an isocyanate-terminated prepolymer and then grafting the isocyanate-terminated prepolymer with a hydroxyl-containing acrylic monomer, a long-chain alkyl structure provided by the long-chain fatty alcohol plays a remarkable internal plasticizing role on the surfaces of latex particles, and the friction force between polymer chain segments is effectively reduced.

The present invention relates to an aqueous binder for a secondary battery electrode and the use thereof, and belongs to the technical field of battery binders. The technical problem to be solved by the present invention is to provide an aqueous binder for a secondary battery electrode having both flexibility and adhesion performance. The binder comprises a graft polymer, having an acrylonitrile polymer as a main chain, which is grafted with acrylate latex particles, wherein the polymerization monomer of the acrylonitrile polymer comprises an acrylonitrile monomer and an acrylic monomer; and the polymerization monomer of the acrylate latex particles comprises a crosslinking monomer and a non-crosslinking monomer. The aqueous binder of the present invention has good flexibility and high adhesion performance to positive and negative electrodes. Therefore, it can be used in a positive electrode sheet or a negative electrode sheet of a secondary battery, effectively reducing the thickness rebound rate of the electrode sheet after being rolled and leaving to stand for 24 h, and improving the performance of the battery. Furthermore, the aqueous binder is environmentally friendly and has a simple preparation process. Therefore, large-scale and continuous production can be achieved, further reducing production costs and improving production efficiency.

This application provides a backing adhesive collection device for coconut fiber mat production, relating to the field of coconut fiber mat production technology. It includes a collection box with suction pipes and exhaust pipes connected to both sides of the top. A fan connected to the exhaust pipes is also installed on the top of the collection box. Several annular conveying pipes are installed inside the collection box, each with several nozzles connected to its inner side. This application utilizes the interaction of the fan and exhaust pipes to create a negative pressure environment within the collection box. Using the principle of negative pressure adsorption, the adhesive mist diffused during the adhesive spraying process is drawn into the collection box through the suction pipes. Water is then conveyed to the annular conveying pipes by the conveyor components, and the water is sprayed out from the nozzles to form a water curtain. When the adhesive mist enters the collection box, it comes into full contact with the water curtain, and the latex in the adhesive mist is adsorbed by the water curtain, achieving the recovery of latex particles and reducing resource waste, environmental pollution, and impact on worker health.

The application discloses a kind of preparation method and system of butadiene-styrene latex using emulsion coagulant modification, belong to high polymer material and synthetic rubber technical field.The application includes: the solution containing lactone compound, linear polymer with upper critical solution temperature is mixed with butadiene-styrene latex, and homogeneous premix system is formed;Under preset temperature condition, the hydrolysis reaction of the lactone compound in the homogeneous premix system is carried out, and the pH value of system drops;When the pH value of the system drops to the isoelectric point of the linear polymer, the dissolution state of the linear polymer under the preset temperature changes from hydrophilic extended conformation to hydrophobic collapse conformation, so as to coalesce latex particles in the butadiene-styrene latex.The application realizes the separation of coagulation reaction and mixing process in time, effectively inhibits the problem of local concentration polarization caused by glue deposition and particle size distribution widening, and the obtained rubber particle is uniform in size and excellent in mechanical property, suitable for industrial production.

The invention discloses an oil-proof acrylic emulsion, which belongs to the technical field of acrylic emulsion, and the oil-proof acrylic emulsion is prepared from the following raw materials: water, styrene, butyl acrylate, acrylic acid long-chain ester, carboxyl functional monomer, hydroxyl functional monomer and crosslinking monomer. The butyl acrylate and styrene are compounded, so that the film-forming property of the oil-proof acrylic emulsion is improved, a compact coating is quickly formed after the oil-proof acrylic emulsion is coated on low-gram-weight paper, oil permeation is prevented, and the oil-proof property of the paper is enhanced; by utilizing the characteristic that the hydroxyl cross-linking monomer can react with the cross-linking monomer, the monomer polymer can further form a compact net-shaped structure, so that the oil-proof performance of the oil-proof coating is improved, and the problems of high-temperature after-tack and rolling adhesion are avoided. Besides, large-particle-size latex particles are synthesized by adopting a reactive emulsifier system, and are matched with acrylic acid long-chain ester, so that the permeation of emulsion colloidal particles is reduced, and an excellent protective coating is ensured to be formed on the surface of the paper.

The utility model relates to the technical field of underwear, and discloses an underwear capable of preventing shoulder straps from slipping, which comprises an underwear body, side wings connected to the left and right ends of the back of the underwear body, straps connected to the backs of the side wings, shoulder straps connected to the tops of the side wings, silica gel pads arranged at the top ends of the inner surfaces of the shoulder straps, soft gaskets fixedly mounted at the inner ends of the side wings through sewing, and anti-slip pads adhered to the surfaces of the gaskets. The non-slip mat is provided with latex particle embossed patterns with granular or wave-shaped textures, and the two are formed by hot pressing; the straps are connected through the back fixing straps and adjustable fixing buckles, the shoulder straps are made of high-elasticity breathable materials, the underwear, the side wings and the straps are all made of light and thin elastic fabric, the silicone pads increase friction force between the shoulder straps and the shoulders to prevent sliding, the latex particle embossments are matched with the anti-sliding pads to fix the side wings to prevent the underwear from shifting, the anti-sliding assemblies are detachable, and the straps are adjustable in tightness. Through structure optimization, material selection and detail design, the underwear solves the problem of slipping of the shoulder straps, and improves wearing comfort and stability.

The application discloses a kind of powder rubber conductive material by electrochemical exfoliation graphene promotes condensation and preparation method thereof, it is related to powder rubber preparation technical field, to solve the problem that existing method is not simple enough, product performance needs to be promoted;The application includes that anode piece is placed in electrolyte, through anodic electrolysis graphite material, while generating graphene, slowly add rubber emulsion, at this time, the graphene that anode is electrolyzed is combined with latex particle, and promotes condensation process in electrolyte, then after separation, washing, drying, obtain powder rubber;The application realizes electrochemical exfoliation graphene promoting condensation effect synchronously in electrolysis process, obtains conductive powder rubber, step is simple and easy to operate, and the powder rubber prepared has small particle size size and high powder rate, and particle is not easy to stick between, and dispersibility is good, and conductive performance is excellent.

A process for preparing a modified latex particle wherein the particle comprises a polycondensate bonded to a functional group on the latex particle and the process for forming a polycondensate comprises reacting an amino group present on the latex particle with (i) at least a first polyfunctional compound, or (ii) at least a first multifunctional compound having at least two functional groups that react with said functional groups of the latex, and at least a first amine compound comprising an amino group selected from the group consisting of ammonia, primary amines and secondary amines, or (ii) at least a second multifunctional compound having at least two functional groups that react with said functional groups of the latex, and at least a second amine compound comprising an amino group selected from the group consisting of ammonia, primary amines and secondary amines, to form a first polycondensate reaction product comprising ion exchange sites and a first unreacted excess of functional groups.

1. A method for producing modified latex particles, the particles comprising condensation polymers attached to functional groups on the latex particles, and the method for forming the condensation polymer comprises reacting amino groups present on the latex particles with either (i) at least a first multifunctional compound having at least two functional moieties reactive with the functional groups of the latex, or (ii) at least a first multifunctional compound having at least two functional moieties reactive with the functional groups of the latex, and at least a first amine compound comprising an amino group selected from the group consisting of ammonia, primary, and secondary amines, to form a first condensation polymer reaction product comprising ion exchange sites and a first excess of unreacted functional moieties.

The utility model provides a kind of new portable mattress, including outer cladding, filling layer, the inside filling of outer cladding is filled with filling layer, the edge of outer cladding top surface, bottom surface is fixedly connected with edge covering, the top surface of outer cladding is fixedly connected with several softness protrusions.The utility model has the advantages that: every filling piece adopts the TPU honeycomb frame of wall thickness 1.2mm, cooperate the negative oxygen ion latex particle filling (porosity 40%) of diameter 3-5mm, form independent unit with supporting and flexibility.The test shows that the weight of single unit is greatly reduced compared with traditional sponge.Elastic dynamic connection system: the whole is formed by polyurethane elastic connecting band 7 between units, and the breaking elongation is >500%, realizing the dynamic support of pressure self-adaption.The mattress realizes lightweight breakthrough: the whole bed weight is lighter, greatly reduced compared with traditional product, single person can easily carry, dynamic support: body pressure distribution uniformity, waist support force is greatly improved compared with traditional product.

The present invention relates to a method of producing latex particles or a latex particle dispersion, a latex particle or a latex particle dispersion produced by the method, the use of the latex particle or latex particle dispersion in a printing ink, a printing ink comprising the latex particle or latex particle dispersion, and a printing method wherein the latex particles are used.

This invention relates to a fully matte, high-transparency topcoat varnish for interior wall textured coatings, its preparation method, and its application. The fully matte, high-transparency topcoat varnish comprises: an emulsion, a multifunctional additive, a thickener, a defoamer, a pH adjuster, a film-forming aid, an antifreeze agent, a dry film antifungal and anti-algae agent, a bactericide, and water. The emulsion is a silicone-modified pure acrylic mixed emulsion with a solid content of 36±1%, comprising coarse-particle-size emulsion and fine-particle-size emulsion. This invention utilizes two or more latex particles of different sizes to achieve an uneven surface on the paint film during film formation, thus achieving a matte effect. The prepared matte varnishes can reduce the risk of paint delamination and the potential for inconsistent gloss during use. Water resistance and storage performance are also significantly improved, greatly expanding its application in water-based multicolor coatings and interior wall art coatings.

A method for making modified latex particles, wherein the particles comprise condensation polymers bonded to functional groups on the latex particles and the method for forming the condensation polymer comprises reacting the amino groups present on the latex particles with (i) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex, or (ii) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex and at least a first amine compound, comprising amino groups selected from the group consisting of ammonia, a primary and a secondary amine to form a first condensation polymer reaction product comprising ion exchanging sites and a first unreacted excess of functional moieties.

The invention relates to a composite nano fireproof material, a fireproof pre-reaction solution and a preparation method and application thereof, and the composite nano fireproof material is prepared from organic nanoparticles and organic / inorganic hybrid nanoparticles; in the organic nanoparticles, a core layer is cross-linked polyacrylamide emulsion particles, a bridging layer is prepared from diisocyanate bridging molecules, a branching layer is linear hydroxyl cellulose, the branching layer is arranged on the outer side of the bridging layer, and the core layer is wrapped with the bridging layer; in the organic / inorganic hybrid nanoparticles, a core layer is a SiO2 emulsion particle containing amino and formaldehyde groups, a transition layer is a copolymer layer which has a cross-linked network structure and contains melamine formaldehyde / phosphorus-containing polymer, and a shell layer is a copolymer layer of which the surface is grafted with linear glycidyl methacrylate. According to the invention, the defect that a fireproof layer material in the prior art cannot meet the ultraviolet test is overcome, and the defects of bubbles, gummosis, blackening, low material hardness, poor low temperature resistance and the like of the fireproof layer are avoided.

The present application belongs to the technical field of artificial turf. Disclosed are an adhesive composition for artificial turf, artificial turf and preparation methods therefor. The adhesive composition for artificial turf comprises the following components by mass percentages: 10-50% of an ethylene-vinyl acetate copolymer emulsion in which the average particle size of latex particles is less than 3 μm; 5-40% of a functional resin emulsion in which the average particle size of latex particles is less than 3 μm; 0.1-10% of a surfactant; and 0-80% of an inorganic filler. The composition is an aqueous system, the requirement for the environment is low during a gum production process, a gum-coated turf bottom side has a good bonding strength, and the bonding strength of an inner single grass yarn, which is the most difficult to permeate, of the artificial turf is still kept well in a high-temperature and high-humidity environment after hot water aging.

The invention discloses a preparation method of carboxylic butadiene-styrene latex for nano waterproof paper, and relates to the technical field of high polymer material synthesizing.A bi-carboxyl monomer collaborative design of acrylic acid and itaconic acid is adopted, and the polarity and reaction activity of a latex molecular chain are remarkably improved through the design; according to the present invention, the latex is added, such that the latex and the paper fiber form the binding force far beyond the binding force of the conventional product so as to provide the waterproof paper with the high tensile strength and the high durability, and the latex particle size is stabilized in the range of 150-170 nm through the ternary composite emulsifier system and the polymerization process control so as to form the ultra-thin and compact continuous film on the paper surface so as to provide the waterproof paper with the ultra-thin and compact continuous film; the water absorption rate of the paper is effectively controlled to be 4.5% or below, the ultra-thin structure retains the natural air permeability of the paper base material while effectively obstructing water permeation, the bottleneck that a wax or plastic coating is waterproof but airtight is fundamentally solved, cooperative improvement of latex performance and environmental protection performance is achieved, and the production requirement of the nano waterproof paper is met.

The invention discloses a heat-resistant anti-ultraviolet self-repairing composite coating for a building and a preparation method of the heat-resistant anti-ultraviolet self-repairing composite coating. The coating is prepared from the following raw materials: fluorinated polyacrylate composite latex particles containing dynamic covalent bonds, waterborne epoxy-acrylic hybrid resin, a waterborne curing agent, core-shell structure functional nanofiller, an organic ultraviolet absorbent, a silane coupling agent, an emulsifier, an emulsion polymerization initiator, water and a defoaming agent. Wherein the fluorinated polyacrylate composite latex particles containing the dynamic covalent bonds are prepared through emulsion polymerization of monomers containing dynamic covalent bond cross-linking monomers, and the coating is endowed with self-repairing performance; the core layer of the core-shell structure functional nanofiller is nano aluminum nitride, and the shell layer is zirconium ion doped nano cerium oxide, so that the heat resistance and ultraviolet shielding performance of the coating are effectively improved. The composite coating is excellent in comprehensive performance and suitable for the fields such as building outer walls needing long-term weather-proof protection.

The present disclosure concerns a formulation, comprising latex particles and silica microcapsules; wherein each silica microcapsule comprises a shell of silica nanoparticles and an oil encapsulated within its cavity thereof; wherein the oil is characterised by a refractive index which is lower than that of the shell of the silica microcapsule; wherein the silica microcapsules are characterised by an average shell thickness of about 100 nm to about 700 nm; and wherein the formulation is characterised by a mass ratio of latex particles to silica microcapsules of about 0.2 to about 2. The present disclosure also concerns a method of forming the formulation. The present disclosure also concerns a method of reflecting visible light, ultraviolet and / or near infrared rays or whitening a surface, comprising contacting the formulation as disclosed herein on the surface.

This utility model discloses a repolymerization reaction device for latex in slim cigarette packaging, relating to the field of latex production technology. The utility model includes a stirring assembly, a preheating assembly on its outer surface, a filtering assembly inside the preheating assembly, and an adjusting assembly on the outer surface of the filtering assembly. The stirring assembly is used to disperse latex particles, the preheating assembly is used to preheat the recovered latex, the filtering assembly is used to filter impurities in the latex, and the adjusting assembly is used to adjust the filtration size of the filtering assembly. Through the connection of the preheating assembly and the filtering assembly, with the filtering assembly located inside the preheating assembly, the expired latex is poured into the preheating assembly for heating, increasing the latex's fluidity and facilitating its passage through the filtering assembly. Because contaminants in the latex are larger than the pore size of the filtering assembly, the contaminants remain on the surface of the filtering assembly, preventing them from entering the stirring assembly with the latex.

The invention discloses a thioether-sulfydryl-containing polymerizable reducing agent for VAE emulsion polymerization and a polymerization method, and relates to the technical field of high polymer material synthesis, the polymerizable reducing agent has a structure as shown in a general formula (I), wherein R1 is a hydrogen atom or a methyl group, X is an oxygen atom or a nitrogen atom, n is an integer of 2, 3 or 4, and R2 is a C2-C6 alkyl chain containing at least one sulfydryl group and at least one hydroxyl group; the polymerizable reducing agent participates in copolymerization through a double bond and becomes a part of a polymer chain, so that the problems of product aging, yellowing and toxicity caused by migration, volatilization and precipitation of a small-molecule auxiliary agent are fundamentally solved, and the polymerizable reducing agent is particularly suitable for a VAE emulsion product with high requirements on water resistance and environmental protection property; the polymerizable reducing agent can generate a synergistic effect with a traditional emulsifier, and is more orderly arranged on an emulsion particle interface, so that the stability of emulsion particles is remarkably improved, and the gel rate is greatly reduced.

The application belongs to the technical field of polyacrylate emulsion, and more particularly relates to a fluorine-free polyacrylate emulsion with waterproof and easy-to-clean properties, a preparation method and application thereof. The polyacrylate emulsion is prepared by first synthesizing an amphiphilic polyurethane prepolymer emulsion, then emulsifying acrylate monomers with the polyurethane emulsion and a composite emulsifier as emulsifiers to obtain a pre-emulsion, and finally adding an initiator to initiate polymerization of the acrylate monomers, so as to obtain polyacrylate latex particles with a polyurethane protective colloid shell and a hydrophobic functional component, a crosslinking component and a large steric component as the core. The layered arrangement of the polymers in the emulsion on the substrate endows the substrate with good waterproof and easy-to-clean properties. The preparation method of the polyacrylate emulsion is simple, avoids the use of fluorine-containing monomers, is suitable for industrial production, has both waterproof and easy-to-clean properties, and is suitable for waterproof and easy-to-clean finishing of various fabrics such as chemical fibers, nylon and polyester-cotton.

The invention belongs to the technical field of coatings, and particularly relates to a coating varnish emulsion as well as a preparation method and application thereof. The coating varnish emulsion comprises an emulsion A and an emulsion B, emulsion particles in the emulsion A have core-shell structures; emulsion particles in the emulsion B have hollow structures. According to the invention, a semi-continuous emulsion polymerization process is adopted, an emulsion A with a hard-core soft-shell emulsion particle structure and a core glass transition temperature greater than or equal to 100 DEG C is prepared by adjusting the ratio of a hard monomer to a soft monomer in the preparation process, and an emulsion B with a hollow emulsion particle structure is prepared by an intermittent emulsion polymerization process. Through compounding of the emulsion A and the emulsion B, under the synergistic effect of different emulsion particle structures, reflected light entering human eyes can be effectively reduced on the surface and in the interior of an emulsion film, and a matte effect can be achieved under the condition that matting powder is not added.

The invention relates to a core-shell structure binder for a silicon negative electrode of a lithium battery and a preparation method and application of the core-shell structure binder, emulsion particles of the binder have a core-shell structure and comprise a core layer and a shell layer coating the core layer, a core layer monomer of the core layer comprises methyl methacrylate, butyl acrylate and methacrylic acid, and a core layer monomer of the shell layer comprises methyl methacrylate, butyl acrylate and methacrylic acid. Shell layer monomers of the shell layer comprise methyl methacrylate, butyl acrylate, methacrylic acid and vinyl versatate. The preparation method comprises the following steps: step 1, preparing a core layer seed emulsion; step 2, shell layer polymerization; and step 3, post-processing. The application refers to application of the binder in preparation of a silicon negative electrode of a lithium battery or preparation of the lithium battery. The binder disclosed by the invention can effectively buffer the volume change of silicon by virtue of synergistic mechanical properties and excellent interface characteristics, improve the electrochemical performance, cycling stability and rate capability of the battery, maintain the integrity of an electrode and solve the problem of electrode failure caused by volume expansion of a silicon-based negative electrode in a cycling process.

The invention relates to a coating emulsion preparation method based on a front-end polymerization process. According to the method, through multi-scale time sequence segmentation and thermodynamic mapping, temperature intervals and peak temperature parameters of all stages of a polymerization reaction are accurately extracted, multiple types of phase change material microcapsules matched with temperature threshold values are designed, and uniform dispersion and potential stability of the microcapsules are achieved. In the reaction process, real-time data are collected through distributed temperature sensing, the system temperature is dynamically monitored through data analysis, selective heat absorption and release of the microcapsules of all gradients are controlled according to signals, and fine buffering and adjusting of the local microenvironment temperature are achieved. Through feedback analysis of temperature fluctuation and particle size distribution, self-adaptive optimization of polymerization process parameters is realized. According to the method, the polymerization reaction temperature control precision and the latex particle size consistency can be remarkably improved, the temperature peak is inhibited, and the emulsion product quality and the process stability are improved.

This invention discloses a narrow-distribution functionalized aqueous latex and its preparation method, belonging to the field of aqueous latex preparation technology. The latex uses functionalized monomers, aromatic vinyl monomers, and aliphatic conjugated diene monomers as main raw materials, introduces silane coupling agent-modified cellulose nanocrystals, and combines them with an initiator, emulsifier, and water, undergoing one-step emulsion polymerization. The modified cellulose nanocrystals can form a physical barrier on the surface of the latex particles, reducing the content of embedded acid and free acid in the aqueous phase, and increasing the surface carboxyl group density; its rigid structure forms a three-dimensional network after film formation, effectively suppressing the volume expansion of the silicon anode. The resulting latex has a particle size of 245~255nm, a narrow particle size distribution, moderate viscosity, and high bonding strength. When used as a lithium battery anode binder, it exhibits high electrode peel strength, good slurry dispersibility, and excellent battery cycle stability. This invention features a simple process, readily available raw materials, and easy industrial scale-up, making it suitable for lithium battery anode binders, paper coating, and aqueous adhesives.

The invention discloses a high-temperature-resistant polyester dispersion adhesive and a preparation method thereof, and relates to the field of adhesives, the preparation method comprises the following steps: preparing a prepolymer a with Tg greater than 60 DEG C, introducing ammonium carboxylate on the prepolymer a to obtain a prepolymer b, then adding a dispersion medium into the prepolymer b to obtain a rigid emulsion containing rigid latex particles; wherein the particle size of the rigid latex particles is 80-120nm, and the rigid latex particles contain carboxyl; diluting the rigid emulsion to obtain a diluent, and dropwise adding a flexible monomer mixture into the diluent to obtain a dispersion comprising composite latex particles; wherein the composite latex particles are of an asymmetric structure with a rigid surface and a flexible surface; and carrying out selective surface modification on the rigid surface of the composite latex particles by using PDMS, and carrying out pH regulation and filtration to obtain the high-temperature-resistant polyester dispersion adhesive. The adhesive can effectively prevent the plasticizer from migrating from the PVC base material to the adhesive layer, and ensures that the adhesive layer has good flexibility and initial adhesion.

The invention relates to a lithium ion battery ceramic diaphragm adhesive and a preparation method and application thereof, and belongs to the technical field of battery diaphragm adhesives. The technical problem to be solved by the invention is to provide the adhesive for the ceramic diaphragm of the lithium ion battery. The adhesive comprises a graft polymer and a water-soluble polymer, the graft polymer takes an acrylamide polymer as a main chain and is grafted with polymer latex particles, and a polymeric monomer of the polymer latex particles comprises an acrylate monomer. The adhesive disclosed by the invention has good anti-curling performance, and the ceramic slurry prepared by using the adhesive is used for coating the diaphragm, so that the curling phenomenon of the diaphragm can be avoided. The adhesive can adopt an aqueous solution polymerization method, the preparation process is simple, the process and product stability are good, the production process can be effectively butted with the production process of ceramic diaphragm slurry, and the production process flow of the lithium battery ceramic diaphragm is optimized.