1545 results about "Acrylate" patented technology

The invention discloses an absorbable suture line for surgical suture and a preparation method thereof, and relates to the technical field of medical materials. The absorbable suture line for surgical suture is prepared from the following raw materials in parts by weight: 50 to 65 parts of polylactic acid, 15 to 20 parts of polyglycolic acid, 3 to 5 parts of sodium carboxymethyl cellulose, 3 to 8 parts of a toughening agent, 3 to 6 parts of an antibacterial agent, 0.3 to 0.8 part of a lubricating agent, 1 to 2 parts of sodium hyaluronate and 5 to 10 parts of polyvinyl alcohol. The toughening agent is obtained by reacting hydroxyethyl acrylate with ethylenediamine to generate a four-arm compound and then reacting with 6-caprolactone and DL-lactide. The absorbable suture line for surgical suture prepared by the invention has excellent tensile property and antibacterial property, and can meet the application requirements of clinical medical treatment.

The invention discloses low-migration UV ink-jet ink and a preparation method thereof, and belongs to the technical field of novel ink. Comprising the following components in parts by mass: 10-15 parts of a dynamic cross-linked polyurethane acrylate oligomer, 5-8 parts of an epoxy silicone resin oligomer, 2-3 parts of modified silicon dioxide, 4-5 parts of a photoinitiator, 15-20 parts of sorbic acid modified color paste, 1-2 parts of nano cerium oxide and 0.5-1 part of an antioxidant. The molecular chain of the dynamic cross-linked polyurethane acrylate oligomer prepared by the invention contains an active group capable of forming a cross-linked structure and a dynamic covalent bond. The groups and bonds promote molecular chain crosslinking when the ink is cured, a three-dimensional network is formed, and the molecular crosslinking density is improved. Through interaction of palmitic acid modified silicon dioxide and oligomer, the palmitic acid modified silicon dioxide is uniformly dispersed in a matrix and interferes molecular chain movement during curing, so that the crosslinking density is further improved, an ink film layer is more compact and firmer, the wear resistance and the scratch resistance are improved, and the tinting strength and the stability are indirectly enhanced.

The invention discloses an acrylate grouting material and a preparation method thereof.The acrylate grouting material comprises a component A and a component B. The component A comprises, by weight, 40-90 parts of an acrylate main agent; 1-15 parts of a cross-linking agent; 0.1 to 10 parts of an accelerant; 1-30 parts of an inorganic filler; the component B comprises the following components in parts by weight: 0.1-10 parts of an initiator; wherein the inorganic filler is selected from one or two of an inorganic cementing material and inorganic nanoparticles. An organic-inorganic interpenetrating network structure is constructed on the basis of an electrostatic complexing action principle between an organic monomer and an inorganic monomer by using an inorganic cementing material and inorganic nanoparticle hybridized acrylate, so that the strength of a slurry consolidated body is greatly improved and the service life of the slurry consolidated body is greatly prolonged on the premise of ensuring the permeability of the slurry.

The invention provides a low-temperature electrolyte, positive electrode slurry and a low-temperature sodium ion battery, and belongs to the technical field of battery materials. The low-temperature electrolyte provided by the invention comprises sodium hexafluorophosphate, propylene carbonate, ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, fluoroethylene carbonate, 2, 2, 3, 4, 4, 4-hexafluorobutyl acrylate and 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether. The battery provided by the invention comprises the low-temperature electrolyte. The low-temperature electrolyte and the low-temperature sodium-ion battery provided by the invention not only can be compatible with a blended positive electrode material, but also can give consideration to low-temperature performance, ensure that the prepared low-temperature sodium-ion battery has good reaction kinetics and cycle performance, and also can improve the energy density of an electrode and reduce the resistivity of powder.

The invention discloses a concrete polycarboxylic acid water reducing agent with high slump loss resistance and flocculation resistance and a preparation method of the concrete polycarboxylic acid water reducing agent, and belongs to the technical field of concrete admixtures. The water reducing agent is prepared from the following raw materials in parts by weight: 45 to 55 parts of isopentenyl polyoxyethylene ether, 3 to 8 parts of methacrylic acid phosphate, 8 to 12 parts of hydroxyethyl acrylate, 4 to 7 parts of N-isopropylacrylamide, 10 to 15 parts of auxiliary monomer, 8 to 12 parts of initiator and 0.3 to 0.6 part of chain transfer agent. And the technical problems that the fluidity of the concrete is reduced and the slump retaining effect is poor due to the fact that the temperature of the concrete is increased in the stirring process are solved.

The invention discloses a modified hydroxyl acrylic emulsion and a preparation method thereof, and belongs to the technical field of environment-friendly paints.The modified hydroxyl acrylic emulsion is prepared from, by weight, 35-50 parts of acrylate monomer, 5-10 parts of functional monomer, 5-10 parts of hydroxyethyl acrylate, 0.3-1.5 parts of initiator, 1-2 parts of vinyl siloxane, 1-2 parts of emulsifier, 0.3-1 part of neutralizer and 30-50 parts of deionized water; the preparation method comprises the following steps: adding an acrylate monomer, a functional monomer, hydroxyethyl acrylate and vinyl siloxane into deionized water, adding an initiator and an emulsifier, heating to 60-75 DEG C, stirring at a constant speed for 30 minutes, and adding a neutralizer to prepare a modified hydroxyl acrylic emulsion; a functional monomer structure contains an antibacterial dichloropyrimidine monomer structure, a main body is an acrylic acid structure and has good compatibility with a matrix, a siloxane structure is introduced, a large number of hydroxyl groups are generated after hydrolysis, and the bonding performance with the coating matrix can be improved.

The invention discloses a water-based acrylate pressure-sensitive adhesive emulsion as well as a preparation method and application thereof, and the preparation method comprises the following steps: S1, providing an acrylate pre-emulsion A and an initiator solution B; s2, dropwise adding a part of the acrylate pre-emulsion A into the initiator solution B, and carrying out a heating reaction to obtain a polymer A emulsion; s3, providing a monomer composition B, and mixing the rest of the acrylate pre-emulsion A and the monomer composition B to obtain an acrylate pre-emulsion B; and S4, dropwise adding the acrylate pre-emulsion B into the polymer A emulsion, and heating for reaction to obtain the water-based acrylate pressure-sensitive adhesive emulsion. The water-based acrylate pressure-sensitive adhesive emulsion prepared by the preparation method disclosed by the invention has relatively good adhesiveness, mobility and PVC shrinkage resistance after being coated on a PVC base material.

The present invention relates to a preparation method of a flame-retardant, high-refractive-index, melt-drop-resistant water-based acrylate resin coating. Water, an emulsifier, and methacrylic acid are added to a reaction vessel and stirred for reaction, and then monomer A, DOPO, and N-vinylcarbazole are added; the temperature is raised to 75-85 °C, an initiator is added dropwise, and the reaction is carried out for 1-2 h to obtain a core-layer emulsion; at the same time, all of monomer B and the initiator are added dropwise, and the reaction is stirred for 1-2 h, then DOPO is added, the temperature is lowered to 50 °C, emulsifier B is added, the reaction time is 30-60 min, then N-vinylcarbazole is added, and the reaction is carried out for 0.25-0.5 h. Then, an ammonium polyphosphate solution, aluminum sulfate, and a chitosan / gelatin composite microsphere are added, and high-speed shear emulsification is carried out, and the pH value is adjusted to 7-8 to obtain a flame-retardant, high-refractive-index, melt-drop-resistant water-based acrylate resin coating; the obtained acrylate resin coating has the advantages of a high oxygen index, no melt dripping during combustion, and a high film refractive index.

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is as follows: R1, R2 and R3 are respectively selected from one of hydrogen and C1-C4 alkyl, A1 is selected from one of hydrogen and C1-C4 alkyl, and A2 is C1-C4 alkyl; r4 is selected from one of H, phenyl and C1-C4 alkyl, and A2 is C1-C4 alkyl; and R5 is hydrogen or methyl. The optical monomer provided by the invention contains a (methyl) acrylate group, and has the properties of high refractive index and low volume shrinkage; and a plurality of aromatic rings with high molar refractive index and low molar volume are contained, so that the whole molecule of the whole monomer is extremely high in refractive index. The monomer structure provided by the invention has a plurality of branched chains, the overall molecular weight is small, and the molecules are not easy to agglomerate.

The invention relates to the technical field of temporary plugging agents, and discloses a water-soluble temporary plugging agent for oil well fracturing and a preparation method thereof. According to the prepared water-soluble temporary plugging agent, sodium lignin sulfonate / graphene oxide serves as a core, then the surface of the core layer is coated with a polyacrylic acid-polyacrylamide copolymer to form a first shell layer, and then the surface of the first shell layer is coated with acrylate modified chitosan to form a second shell layer; the temporary plugging agent is applied to oil well fracturing, not only has excellent plugging performance, dissolving performance and anti-shearing performance, but also can improve the transportation capacity of the temporary plugging agent in the oil well fracturing process.

The invention relates to the field of emulsions for grainy paper coatings, and discloses a preparation method of a water-based environment-friendly emulsion for a grainy paper coating. The preparation method comprises the following steps: S1, preparing an acrylic carbamate modified monomer from hydroxyethyl acrylate, 2, 4-toluene diisocyanate and diethanol amine; and S2, preparing to obtain the emulsion. S3, obtaining the initiator. S4, deionized water, lauryl sodium sulfate, the emulsion and an initiator are subjected to a polymerization reaction, and an emulsion A is obtained. S5, transferring the emulsion A into a degassing kettle, adding tert-butyl hydroperoxide and vitamin C, and performing oxidation-reduction reaction to obtain emulsion B; and S6, carrying out steam degassing on the emulsion B to obtain the water-based environment-friendly emulsion. The water-based environment-friendly emulsion which is good in stability, glossiness, adhesion fastness, water resistance and weather resistance and low in volatile organic compound content can be prepared, and the preparation method is simple, efficient and environmentally friendly and has wide application prospects and market value.

The invention provides a preparation method of high-performance polyacrylonitrile pre-oxidized fibers, and belongs to the technical field of preparation of carbon filaments from polyacrylonitrile. The preparation method comprises the following steps: adding hydroxylated carbon nanotubes into deionized water, performing ultrasonic dispersion, adding a modifier and a catalyst, continuing ultrasonic dispersion, heating to 80-90 DEG C, performing constant-temperature reaction, fully washing with water, and drying to obtain modified carbon nanotubes; dispersing the modified carbon nanotube in an N, N '-dimethylformamide solution, adding an acrylonitrile monomer, hydroxyethyl acrylate and an initiator, copolymerizing to form a carbon nanotube / acrylonitrile copolymer, and spinning to obtain a carbon nanotube / acrylonitrile copolymer fiber; the carbon nano tube / acrylonitrile copolymer fiber is placed in a microwave treatment device, and a plurality of microwave generators are arranged in the microwave treatment device and are used for carrying out segmented pre-oxidation on the carbon nano tube / acrylonitrile copolymer fiber. The problems that an existing polyacrylonitrile fiber pre-oxidation technology is high in energy consumption and low in strength, poor in flame retardance and the like due to the difference between internal and external pre-oxidation effects can be solved.

The invention discloses an anti-fog automobile glass film and a preparation method thereof, and relates to the technical field of glass films. The anti-fog automobile glass film prepared by the invention is prepared from modified polyacrylate, modified silicon dioxide and pyrrole, the modified polyacrylate is obtained by reacting polyacrylate with 4-ethynyl acetophenone, and then reacting with 1H-pyrrole-3-formaldoxime; the modified silicon dioxide is obtained by formylating amino silicon dioxide coated with sodium alginate and then polymerizing the formylated amino silicon dioxide, 4, 4 '-diformyl-2, 2'-disulfonic acid biphenyl and pyrrole-3-formaldehyde. The anti-fog automobile glass film prepared by the invention has good antibacterial, anti-aging and photocatalytic properties.

The invention discloses rosin modified zinc acrylate self-polishing resin, an antifouling paint containing the resin and a synthesis method. Firstly, under the action of an initiator, an acrylic prepolymer is synthesized from an acrylic monomer through a polymerization reaction; then, under the action of zinc oxide and benzoic acid, rosin resin is grafted to the side chain of the acrylic prepolymer, and zinc acrylate resin with the side chain containing rosin is obtained; and mixing, dispersing and grinding the rosin modified zinc acrylate resin, an anti-fouling agent, pigment filler, an auxiliary agent and a solvent to obtain the self-polishing anti-fouling paint based on the rosin modified zinc acrylate resin. The prepared rosin modified zinc acrylate self-polishing resin is high in polymerization degree, concentrated in molecular weight distribution and good in plasticity and flexibility, and the self-polishing antifouling paint based on the rosin modified zinc acrylate self-polishing resin comprises a cuprous oxide main antifouling agent and a composite organic antifouling agent and has the stable copper ion seepage rate and the good antifouling effect.

The invention belongs to the technical field of polymer materials, and provides LED-moisture dual-curing organic silicon modified hyperbranched polyurethane acrylic resin as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, taking first polyhydric alcohol and polyatomic acid as raw materials, preparing a hyperbranched polyester prepolymer containing hydroxyl at the tail end through a first reaction, and further performing a second reaction with an isocyanate compound and second polyhydric alcohol to prepare a hyperbranched polyurethane prepolymer containing isocyanate groups at the tail end; the coating further prepared from the organosilicon modified hyperbranched polyurethane acrylic resin not only can be subjected to UV curing, but also can be subjected to LED curing and moisture curing, energy required by curing is low, curing is 100%, environment friendliness is achieved, VOC is zero, the flash point is 95 DEG C or above, the product curing speed is high, the viscosity is low, and the coating can be widely applied to the field of high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing, high-temperature curing and high-temperature curing. The paint has the advantages of good flexibility, good film-forming property, strong adhesive force and excellent weather resistance.

The embodiment of the invention provides an electrolyte, a battery and electric equipment, the electrolyte comprises a lithium salt, an organic solvent and a polymer matrix, and monomers of the polymer matrix comprise vinylene carbonate and isocyanate ethyl acrylate. In the electrolyte provided by the embodiment of the invention, the monomers of the polymer matrix comprise vinylene carbonate and isocyanate ethyl acrylate, and the low HOMO energy level of isocyanate ethyl acrylate can weaken the electron loss ability of the polymer matrix and improve the oxidation stability of the electrolyte, so that the relatively poor electrochemical stability is improved; and a copolymerization structure of vinylene carbonate and isocyanate ethyl acrylate reduces the crystallinity of a polymer matrix and provides a smoother path for Li < + > transmission, so that the ionic conductivity of the electrolyte is improved. Therefore, the electrolyte provided by the invention can effectively improve the problems of low room-temperature ionic conductivity and relatively poor electrochemical stability of the existing gel electrolyte, and has a good application prospect.

The present invention provides an organic phosphonic acid betaine and a preparation method thereof, specifically an ammonium phosphonic acid betaine containing a glycidyl group. The organic phosphonic acid betaine can be used as a functional monomer for free radical grafting modification of the surface of a polymer material such as polyolefin, or can be mixed with acrylate, acrylonitrile or other olefin monomers for copolymerization to prepare an amphoteric ionomer. The organic phosphonic acid betaine can also be used for ring-opening grafting modification of polymer materials such as starch, cellulose, polyurethane, and polyamide containing amino or hydroxyl groups in their structures. At the same time, the phosphonic acid betaine imparts functional effects such as zwitterionization, hydrophilicity, antibacterial properties, and antifouling properties to the obtained polymer material. The organic phosphonic acid betaine also has high chemical stability in acidic and alkaline water environments.

A thiol masterbatch composition for preparing a UV curable composition is provided, the thiol masterbatch composition comprising at least 70% by weight of a thiol compound, and at least one stabilizer. A kit for providing an ultraviolet curable composition includes: a first portion including a thiol masterbatch composition therein; and a second portion separate from the first portion and including a (meth) acrylate composition therein. A method of making a UV curable composition includes combining a thiol masterbatch composition and a (meth) acrylate composition.

The invention relates to the field of secondary batteries, and particularly discloses a wetting agent, positive electrode slurry, a preparation method and application. The wetting agent comprises an acrylate monomer, a cyano-containing monomer, a vinyl functional monomer, a surfactant and an initiator. The glass transition temperature of the wetting agent ranges from-50 DEG C to 30 DEG C, and after the wetting agent is soaked in electrolyte for 72 h, the mass swelling rate ranges from 500% to 3000%, and the volume swelling rate ranges from 50% to 1000%. A certain amount of the wetting agent is added into positive electrode slurry and is mixed and matched with a binder for use, so that the wettability of an electrolyte of a pole piece can be improved, a battery cell can quickly absorb the electrolyte, the electrolyte retention capacity of the battery is better, and the rate capability and the cycle performance of the battery are improved. And meanwhile, the wetting agent is of a linear structure and plays a long-range connection role in the pole piece, so that the adhesive force of the pole piece is improved, and the possibility that the pole piece falls off in the circulation process is reduced, thereby further improving the cycle performance of the battery.

A RAFT agent for photo-controlled (iniferter) polymerization, preparation method therefor, and applications thereof. The RAFT agent has a structure represented by the general formula:wherein R2 and R3 are each hydrogen, and R1 is methyl. The RAFT agent is structurally and chemically stable, simple to synthesize, and enables rapid photo-controlled polymerization under blue light. It has been demonstrated that when using this RAFT agent for polymerization, the reaction time is reduced to just a few minutes, achieving a high conversion rate for acrylate and acrylamide monomers. Additionally, polymerization with the RAFT agent does not require the introduction of additional initiators or photocatalysts, as the RAFT agent itself can facilitate chain initiation and chain transfer under blue light. Compared to other photo-controlled polymerization methods, the apparent propagation rate is faster, and no additional impurities are introduced into the final product, thereby not affecting the color and performance of the polymer.

The invention discloses silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber, and the silicone rubber is prepared from the following raw materials: raw vinyl silicone rubber, zinc acrylate, a platinum catalyst, a hydrogen-containing silicone oil cross-linking agent and silicon carbide nanowires. According to the invention, a covalent network based on raw vinyl silicone rubber is constructed in the silicone rubber, and zinc acrylate and silicon carbide nanowires form an ionic network, so that the double-network structure not only can improve the technical problem of high probability of rubber overflow in the preparation process of the silicone rubber, but also can enable the silicone rubber to obtain better mechanical properties.

The invention discloses an ultraviolet multi-curing heat-conducting insulating material which comprises an epoxy resin oligomer, a polyacrylate oligomer, a reactive diluent, a composite photoinitiator and a sulfydryl-containing silane coupling agent modified heat-conducting particle filler. After ultraviolet irradiation, multiple curing reactions, including free radical polymerization, cationic polymerization, sulfydryl-alkene click addition reaction and sulfydryl-epoxy ring-opening reaction, can be rapidly initiated. The heat-conducting insulating material disclosed by the invention has very high crosslinking density and a more continuous heat-conducting network, and is high in curing speed, free of volatile gas and simple and convenient in preparation process.

The invention relates to the technical field of bioanalytical chemistry, in particular to a method for simultaneously enriching and separating glycopeptides and phosphopeptides by using a bionic hydrophilic adsorbent, which specifically comprises the following steps: step 1, preparing a polyether-ether-ketone (PEEK) framework by using a fused deposition modeling method (FDM); 2, soaking the obtained PEEK framework in an aqueous solution containing dopamine hydrochloride and tris (hydroxymethyl) aminomethane, and carrying out a reaction; step 3, then, adding a mixed solution containing hyaluronic acid methacrylate, vinyl phosphoric acid, N, N-dimethyl bisacrylamide and phenyl-2, 4, 6-trimethylbenzoyl lithium phosphate into the PEEK framework; in the invention, in the aspect of material preparation, a fused deposition modeling method (FDM) is adopted to prepare a polyether-ether-ketone (PEEK) frame, and the material has good mechanical properties and chemical stability and can bear a series of subsequent complex treatment processes without being damaged.

The invention relates to the field of building materials, and discloses high-toughness and high-energy-absorption polymer emulsion modified mortar and a preparation method thereof, and the mortar is composed of ordinary Portland cement, river sand, a polymer emulsion, water, an active admixture and chopped fibers. Wherein the polymer emulsion is selected from styrene-acrylic emulsion (SBR), ethylene-vinyl acetate (EVA), polyurethane emulsion or a combination thereof; the mixing amount is 5-20wt% of the mass of the cementing material. According to the invention, a viscoelastic network is formed in a cement matrix through the polymer emulsion, and the synergistic effect of the active admixture and the chopped fibers is combined, so that the bonding strength, the crack resistance, the impact resistance and the stress wave dissipation capability of the mortar are remarkably improved. Test results show that the mortar provided by the invention is obviously superior to ordinary mortar in the aspects of 28d breaking strength, impact toughness and stress wave attenuation performance, and is suitable for high-performance constructional engineering and protective engineering.

The embodiment of the invention relates to a slow-release polymer coating as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing a polymer monomer, a polymer monomer initiator, a solvent, a cross-linking agent and an electrolyte initiator in proportion to obtain coating precursor slurry; wherein the polymer monomer comprises a fluorinated acrylate compound; the polymer monomer initiator includes: a radical initiator; the solvent comprises an ether compound; the cross-linking agent comprises one or more of a polyethylene glycol derivative and an acrylate compound; the electrolyte initiator comprises lithium salt which can generate protonic acid with trace water and is resistant to high temperature; and coating the surface of an object to be covered with the coating precursor slurry, and carrying out heating polymerization treatment to obtain the slow-release polymer coating. The slow-release polymer coating can protect the lithium metal negative electrode and enhance the high-temperature safety performance of the lithium metal battery.

The present invention relates to the technical field of thermal insulation materials, and specifically discloses an aerogel composite thermal insulation coating and a preparation method thereof. In the composite emulsion provided by the present invention, the monomer raw materials are selected from 4-vinylphenylboronic acid, styrene, and acrylate. The polystyrene structure and the alkyl long-chain structure of polyacrylate formed by polymerization have strong hydrophobic properties, improving the hydrophobicity of the coating. At the same time, the polystyrene structure can also endow the coating with a certain thermal insulation effect. The boric acid groups in 4-vinylphenylboronic acid form a B-O-B cross-linked network structure at high temperatures, which can form a borate glass layer with zirconia in the modified montmorillonite, improving the density and thermal stability of the carbon layer, and further improving the flame retardant effect of the coating. And by modifying the montmorillonite, the hydrophobicity and flame retardant effect of the coating are further improved.

The invention relates to the technical field of cables, and provides a high-toughness corrosion-resistant medium-voltage power cable, which comprises a conductor, and an insulating layer, a shielding layer, an armor layer and a sheath layer which are sequentially arranged outside the conductor, the sheath layer comprises the following components in parts by weight: 70-100 parts of polyvinyl chloride, 30-40 parts of nitrile rubber, 10-15 parts of a flame retardant, 15-20 parts of a plasticizer, 1-3 parts of an antioxidant, 5-10 parts of a filler, 2-4 parts of a heat stabilizer, 1-3 parts of a compatilizer and 0.5-2 parts of a cross-linking agent; the filler is prepared from the following raw materials in parts by weight: 100 parts of calcium carbonate, 20 to 24 parts of 2-ethylhexyl acrylate and 6 to 10 parts of acrylic acid. According to the technical scheme, the problem of poor corrosion resistance of the medium-voltage power cable in the prior art is solved.

The invention discloses a functional intermediate for polycarboxylic acid synthesis modification and a preparation process thereof, the intermediate is a copolymer containing a phosphate group, an acrylate group and a hyperbranched polyether polyol chain segment, the molar ratio of all structural units is 1: (1-3): (0.5-2), and the preparation method comprises the following steps: esterification reaction; carrying out phosphorylation reaction; and carrying out gradient vacuum to remove small molecules. The intermediate is high in content of effective components, the viscosity is 500-2000mPa. S, the dispersing performance and the slump loss resistance of the polycarboxylate superplasticizer are remarkably improved through the synergistic effect of phosphate tackifying, acrylate dispersing and hyperbranched compatibilizing, the intermediate is particularly suitable for concrete construction under complex gravel geological conditions, the doping amount is reduced compared with that of traditional hydroxyethyl acrylate, and the service life of the polycarboxylate superplasticizer is prolonged. And the slump of the mother liquor can be kept lossless for a long time.

The invention discloses a super-tough temperature-resistant self-repairing copolymer based on SBS acrylate dynamic synergistic reinforcement and a preparation method thereof, and belongs to the technical field of self-repairing materials in compositions of high-molecular compounds. The copolymer comprises SBS, an acrylate monomer, a dynamic bond functional monomer, an initiator, a cross-linking agent, a nano reinforcing agent and a temperature-resistant modifier, wherein the dynamic bond functional monomer comprises at least one of acryloyloxyethyl disulfide, acrylamide acryloyloxyethyl disulfide or anthracene methyl acrylate. The molecular structure of the dynamic bond functional monomer contains a carbon-carbon double bond and a disulfide bond, in the free radical polymerization reaction initiated by the initiator, the carbon-carbon double bond is opened and is subjected to a copolymerization reaction with an SBS chain segment or an acrylate chain segment, so that the disulfide bond enters the polymer chain segment, the dynamic disulfide bond can be reversibly broken and recombined at high temperature, and the dynamic bond functional monomer is obtained. The high-temperature viscoelasticity is maintained, the material is endowed with self-repairing capability, and the problem that the viscoelasticity of the material in the prior art is sharply reduced at high temperature (gt; 120 DEG C) is solved.

Disclosed are a negative electrode binder composition, a negative electrode binder and a preparation method therefor, a negative electrode sheet, a battery cell, and a battery. The negative electrode binder composition comprises the following components: an acrylic monomer, a hydroxydopamine monomer, a long-chain alkyl (meth) acrylate monomer, and a vinyl siloxane monomer.