8088 results about "Bis epoxide" patented technology

The invention relates to the field of electric heating materials, and provides a graphene-based heating coating and a preparation method thereof. The coating is prepared from functionalized graphene, a surface modified bismuth telluride nanobelt, polyaniline, bisphenol A epoxy acrylate, polyurethane acrylate, a dispersing agent, a flatting agent, a silane coupling agent, a defoaming agent and a propylene glycol methyl ether acetate / N-methyl pyrrolidone mixed solvent. The functionalized graphene is obtained by modifying a hyperbranched polyolefin-acryloyl-POSS copolymer, and carrying out ultrasonic stripping, centrifugal separation, gradient washing and vacuum drying; the surface-modified bismuth telluride nanobelt is modified by an amino silane coupling agent, so that the interfacial compatibility is improved. The preparation method comprises the steps of solvent premixing, nanofiller dispersion, ultrasonic homogenization, coupling agent modification, ultraviolet curing and thermocuring. The heating coating provided by the invention has high conductivity, excellent thermal stability and adhesive force, and can be widely applied to heating electric appliances and intelligent temperature control equipment.

The invention discloses a toughened epoxy resin and a curing method thereof, and relates to the technical field of epoxy resins, the toughened epoxy resin comprises the following components: 100 parts of an epoxy resin matrix, specifically a mixture of bisphenol A epoxy resin and alicyclic epoxy resin, 5-35 parts of a composite amine curing agent, and 5-20 parts of a nano toughening agent, in particular to core-shell rubber particles grafted with epoxy groups on the surfaces, the core layer of each core-shell rubber particle is cross-linked polybutadiene, the shell layer of each core-shell rubber particle is polymethyl methacrylate, 0.5-3 parts of an accelerant comprising a bi-component synergistic accelerant, 1-5 parts of an interface enhancer, and a mixture of gamma-glycidyl ether oxypropyl trimethoxy silane and a titanate coupling agent, a bisphenol A type epoxy resin and a specific proportion of alicyclic epoxy resin are combined to construct an epoxy resin matrix according to a mass ratio of 2: 1, the epoxy resin matrix is matched with a composite amine curing agent prepared by carrying out a special three-step reaction on long-chain polyether diamine, aromatic diamine and anhydride, and key parameters such as molecular weight, functionality and molar ratio of the components are accurately regulated and controlled.

The invention discloses a high-temperature-resistant epoxy insulating material for a transformer and a preparation method thereof, and belongs to the technical field of insulating materials. The high-temperature-resistant epoxy insulating material for the transformer is prepared from the following components in parts by weight: 50 to 60 parts of bisphenol A epoxy resin, 20 to 50 parts of anhydride curing agent, 10 to 20 parts of modified composite filler and 5 to 10 parts of epoxidized hydroxyl-terminated liquid polybutadiene, wherein the modified composite filler is a mixture of first boron nitride, second boron nitride and silicon nitride grafted with a silane coupling agent and dopamine, and the mass ratio of the first boron nitride to the second boron nitride to the silicon nitride is (1-2): (2-4): 1. The high-temperature-resistant epoxy insulating material for the transformer has excellent mechanical property, insulating property, heat-conducting property and high-temperature aging resistance.

The invention relates to the technical field, and particularly discloses a nano-modified epoxy building thermal insulation material and a preparation method thereof. The nano modified epoxy building thermal insulation material is prepared from the following raw materials in parts by mass: 80 to 120 parts of Portland cement, 20 to 40 parts of slag powder, 5 to 10 parts of hollow mesoporous silicon dioxide, 0.1 to 1 part of pyrrole, 0.1 to 0.2 part of ammonium persulfate, 5 to 10 parts of nano silicon dioxide, 10 to 15 parts of bisphenol S epoxy resin, 1 to 5 parts of acrylic acid, 1 to 2 parts of polylysine, 0.01 to 0.1 part of catalyst and 1 to 2 parts of curing agent. The concrete is prepared from the following raw materials in parts by weight: 20-30 parts of epoxy resin, 4-8 parts of loaded aerogel, 0.1-1 part of polycarboxylate superplasticizer, 1-4 parts of composite fiber and 0.2-1.25 parts of hydrogen peroxide. The fireproof building material has excellent toughness, can better resist cracking and absorb energy, effectively avoids cracking and damage under the action of thermal stress, and ensures that the building material has a fireproof effect.

The invention relates to the field of membrane materials, and discloses an epoxy modified starch-based degradable membrane and a preparation method thereof, the epoxy modified starch-based degradable membrane comprises epoxidized starch, modified nanocellulose and a plasticizer; the modified nano cellulose is prepared by mixing a modified composite filler, a nano cellulose dispersion liquid and a zinc acetate dihydrate aqueous solution; the nano-cellulose dispersion liquid is prepared by adhering polytannic acid formed by oxidation and self-polymerization of tannic acid to the surface of nano-cellulose; the modified composite filler is prepared by performing carboxylation modification on nano titanium dioxide coated fumed silica nanoparticles by using succinic anhydride and gamma-aminopropyltriethoxysilane, then reacting with polyethyleneimine to obtain an aminated composite filler, and finally grafting glycidyl dodecyl dimethyl ammonium chloride to the surface of the aminated composite filler. The prepared film material is high in tensile strength, has certain hydrophobicity, and has good heat resistance, antibacterial property and flame retardant property.

The invention relates to an insulating weather-resistant powder coating and a preparation method thereof, and belongs to the technical field of coatings, and the powder coating comprises composite modified resin, a dual curing agent, a functional filler, a polyacrylate leveling agent, fumed silica, a benzotriazole ultraviolet light absorber, polytetrafluoroethylene wax powder and the like. A core-shell structure of the composite modified resin is designed, high insulativity is kept through a silane modified epoxy core layer, a weather-proof barrier is provided through an acrylic acid shell layer, and the phase separation problem is solved through interface chemical bonding; a dual-curing mechanism is designed, and isocyanate and acrylic hydroxyl react to form an interpenetrating network while an epoxy core layer is cured by anhydride; a filler synergistic effect is designed, silane coupling agent modified nano boron nitride forms a three-dimensional heat-conducting insulating network, and rutile type titanium dioxide is coated with silicon dioxide, so that ultraviolet aging is resisted. All the components cooperate with one another, so that the coating has excellent insulativity, weather resistance, adhesiveness and the like at the same time.

The invention discloses a method for preparing a modified PHA composite material by using a twin-screw extruder and application of the modified PHA composite material. The method comprises the following steps: carrying out in-situ melt blending on polyhydroxyalkanoate (PHA), poly (butylene adipate terephthalate)-poly (butylene adipate terephthalate) (PBAT), polyvinyl alcohol (PVOH) and chain extenders in a twin-screw extruder, so that the chain extenders such as polyfunctional group epoxy or isocyanate react with molecular terminal groups of the PHA, the PBAT and the PVOH to form a partially crosslinked or grafted structure; therefore, the compatibility is enhanced, the thermal stability is improved, and the barrier property is remarkably improved. Experiments prove that the obtained modified PHA composite material has the characteristics of high strength, high elongation, excellent water and oxygen resistance and biodegradability, and meets the strict requirements of multiple fields such as food packaging, agricultural plastic mulching films, medical consumables and the like on mechanical properties and barrier properties. The preparation method is simple, convenient and efficient, and large-scale continuous production can be achieved on existing double-screw extrusion equipment.

The invention discloses a hydrophilic polyacrylate / epoxy silica sol composite coating and a preparation method thereof. The composite coating is prepared from a polyacrylate epoxy silica sol solution containing carboxyl and a polyethylene glycol side chain through blending, coating, drying and heating crosslinking. The polyacrylate is synthesized by taking methyl methacrylate, methacrylic acid, hydroxyethyl methylacrylate and allyl polyethylene glycol as comonomers through a solution free radical copolymerization method, and the epoxy silica sol solution is prepared by taking tetraethoxysilane and gamma-glycidoxypropyltrimethoxysilane as raw materials through a solution polymerization method. The composite material is prepared through a sol-gel and core-shell preparation process. The preparation method comprises the following steps: carrying out solution blending on polyacrylate and epoxy silica sol, and carrying out coating, drying and other processes to generate the cross-linked polyacrylate / epoxy silica sol composite coating through a cross-linking reaction between carboxyl and epoxy. The prepared composite coating has the characteristics of long durability, wear resistance, hydrophilicity, antifogging, protein adsorption resistance and the like.

The invention discloses a wear-resistant and impact-resistant composite PVC material and a preparation method thereof, and belongs to the technical field of high polymer materials, the wear-resistant and impact-resistant composite PVC material comprises the following raw materials by weight: 80-100 parts of epoxy polyvinyl chloride, 10-15 parts of a plasticizing stabilizer, 10-12 parts of an impact modifier, 0.5-2 parts of a lubricant, 5-10 parts of a filler, 2-3 parts of an antioxidant and 2-3 parts of a heat stabilizer; the preparation method comprises the following steps: preparing a metal soap stabilizer, absorbing pyrolysis gas, decomposing to generate metal chloride, enhancing the flame retardant property of the material, and uniformly dispersing the metal soap stabilizer as a filler in the material, so that an epoxy group in the prepared modifier absorbs hydrogen chloride and hybridizes a polyvinyl chloride chain segment at the same time, thereby enhancing the flame retardant property of the material. And a double-bond structure reacts with pyrolysis free radicals to generate an annular structure, so that the impact resistance of the material is enhanced.

The invention discloses a medium-temperature curing high-temperature-resistant high-adhesion epoxy structural adhesive film as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting high-rigidity diisocyanate with polyether polyol to obtain a polyurethane prepolymer, then adding bisphenol epoxy resin to carry out grafting reaction, and then adding carboxyl-terminated nitrile rubber to react with an epoxy group to obtain the high-temperature-resistant high-adhesion epoxy resin. And finally, mixing with a curing system and coating to obtain the intermediate-temperature curing high-temperature-resistant high-adhesion epoxy structural adhesive film. The preparation process disclosed by the invention is reasonable, and the high-temperature resistance of the adhesive film is remarkably improved by introducing high-rigidity groups such as naphthalene ring, biphenyl or p-benzene while the excellent processing property of the adhesive film is ensured; and through the synergistic effect of the polyurethane flexible chain segment and the nitrile rubber, the toughness and the adhesive property of a resin system are improved, and the loss of the resin in the forming process is reduced.

The invention relates to the technical field of epoxy resin paint, and discloses waterborne epoxy paint suitable for containers and a preparation method of the waterborne epoxy paint. A component A of the waterborne epoxy paint comprises, by weight, 100 parts of waterborne epoxy resin and 0.5-0.8 part of a flash rust inhibitor; the component B comprises 6-8 parts by weight of a polyamide curing agent, 5-12 parts by weight of an organosilicon sulfonate polyurethane toughening agent and 0.2-1 part by weight of graphene oxide; the organic silicon polyurethane flexibilizer can play a role of a dispersing agent, the dispersity of graphene in the waterborne epoxy paint is improved, the main chain of the organic silicon polyurethane flexibilizer contains imino groups, the organic silicon polyurethane flexibilizer can be subjected to a curing reaction with epoxy resin, a flexible organic polysiloxane molecular chain is bonded into an epoxy resin molecular chain, and the flexibility of the waterborne epoxy paint is improved. A good toughening effect is achieved, so that the flexibility, the impact resistance and the corrosion resistance of a paint film are improved.

The invention discloses a method for preparing a heat-expanding epoxy foam with electromagnetic shielding properties. In the process of processing the heat-expanding epoxy foam with epoxy resin as a substrate, before curing and foaming treatment, a conductive filler with heat-expanding microspheres grafted on the surface is added to the system. After the processing is completed, the heat-expanding epoxy foam with electromagnetic shielding properties is obtained; the minimum foaming temperature of the heat-expanding microspheres is 110-120°C, and the maximum foaming temperature is 140-150°C; the temperature of the curing and foaming treatment is 15-25°C higher than the minimum foaming temperature of the heat-expanding microspheres; during the curing and foaming treatment, the viscosity of the epoxy resin is less than 1Pa·s. The method of the invention solves the problem that the conductive filler is difficult to disperse in the resin matrix innovatively by introducing heat-expanding microspheres on the surface of the conductive filler. The obtained heat-expanding epoxy foam with electromagnetic shielding properties has good electromagnetic shielding performance and high use value and economic benefits.

The invention relates to the technical field of metal surface protection, and discloses a corrosion-resistant self-repairing metal fastener and a preparation method thereof.The corrosion-resistant self-repairing metal fastener comprises a zinc alloy matrix, a nanometer passivation layer, a slow-release corrosion-resistant layer and a self-repairing functional layer, and the nanometer passivation layer, the slow-release corrosion-resistant layer and the self-repairing functional layer sequentially wrap the zinc alloy matrix; the zinc alloy matrix consists of Al, Cu, Mg, Ce and Zn; the nano passivation layer adopts zinc phosphate / silane composite sol to construct a Si-O-P covalent bond network, and plasma is combined to graft epoxy groups to enhance the interface bonding strength; the slow-release anti-corrosion layer is used for loading a pH response type benzotriazole derivative through gradient aperture mesoporous silica, so that the dynamic controlled release of a corrosion inhibitor is realized; the self-repairing functional layer adopts a synergistic effect of a mechanical triggering type sulfydryl siloxane microcapsule and a pH triggering type EDTA chelating agent microcapsule to form a physical plugging-chemical passivation dual-mode repairing mechanism. Through four-stage cooperation of matrix modification, interface strengthening, slow-release regulation and control and intelligent repair, the corrosion resistance of the corrosion-resistant self-repairing metal fastener in a complex environment is remarkably enhanced.

The invention provides a robot joint dynamic cable made of a self-repairing polyurethane material and a preparation method of the robot joint dynamic cable, and belongs to the field of cables. Polytetrahydrofuran glycol and hexamethylene diisocyanate react to form a soft and hard segment structure, 1, 4-butanediol is added for chain extension, dopamine hydrochloride is introduced, the hard segment structure is enhanced, and a self-repairing hydrogen bond network is formed; carbon nanotubes are introduced, and through plasma treatment and silane coupling agent modification, the tensile resistance, fatigue resistance and electrical properties of the material are improved; montmorillonite is compounded with polyethyleneimine through organic treatment, so that the cracking resistance and wear resistance of the material are enhanced; epoxy groups are introduced to the surface of boron nitride, and dopamine hydrochloride is self-polymerized, so that excellent heat dissipation capability and dimensional stability are provided. Through the synergistic effect of the components, the composite material has excellent mechanical properties, electrical properties, heat dissipation, wear resistance and the like, is especially suitable for a dynamic cable of a robot, and can stably work in a complex environment for a long time.

The invention relates to the technical field of layered composite fabrics, in particular to an antibacterial breathable bio-based composite fabric and a preparation method thereof. The composite fabric comprises a two-layer structure of an inner-layer fabric and an outer-layer fabric, the inner-layer fabric is prepared from a bio-based material polylactic acid, the outer-layer fabric is prepared from bio-based materials polyamide fibers and polyester fibers, the polylactic acid is subjected to modification treatment, graphene oxide is introduced, quaternary ammonium salt is generated, the composite fabric has excellent antibacterial performance, and the antibacterial performance of the composite fabric is improved. The preparation method of the antibacterial modified polylactic acid comprises the following steps: reacting graphene oxide with 1-dimethoxy (methyl) silicon methyl isocyanate to prepare isocyanate-based graphene oxide; reacting the isocyanate-based graphene oxide with polylactic acid to prepare graphene oxide modified polylactic acid; reacting the graphene oxide modified polylactic acid with epoxidized soybean oil and amino modified graphene oxide to prepare modified polylactic acid; and carrying out quaternization reaction on the modified polylactic acid and bromoethanol to generate the antibacterial modified polylactic acid.

The invention discloses a waterproof anticorrosive coating and a preparation method and application thereof, and relates to the technical field of coatings, and the waterproof anticorrosive coating is prepared from the following raw materials in parts by weight: 30-40 parts of carboxyl-terminated hyperbranched polyester resin, 20-30 parts of carboxyl-terminated functional polyamide, 10-15 parts of hyperbranched polyurethane containing epoxy groups, 15-20 parts of filler, 1-3 parts of (3, 6-diamino acridine-9-yl) boric acid, 1-3 parts of 1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5- the component A is prepared from the following components in parts by weight: 3-5 parts of 2, 3, 5-triglycidyl-S-triazinetrione, 1-2 parts of a coupling agent, 0.8-1.2 parts of a flatting agent and 0.6-1.3 parts of a defoaming agent; the carboxyl-terminated functional polyamide comprises a structural unit introduced by the following monomers: N-(4H-1, 2, 4-triazole-4-yl) diphenylamine-4, 4 '-dicarboxylic acid, and 3, 3'-diamino-4, 4 '-difluorodiphenyl sulfone. The coating is good in waterproof and anti-corrosion performance, high in adhesive force with a base material, sufficient in solvent resistance and aging resistance and long in service life.

The invention relates to the technical field of heavy anti-corrosion coatings, in particular to a graphene enhanced epoxy modified organic silicon resin heavy anti-corrosion powder coating. The coating is prepared from the following components in parts by weight: 42 to 58 parts of epoxidized epoxy modified organic silicon resin, 0.8 to 2.5 parts of hydroxylated graphene, 6 to 11 parts of nano zirconium dioxide coated boron nitride, 2.5 to 5.5 parts of lanthanum iso-octoate-titanate composite coupling agent, 1.5 to 3.5 parts of bis (3-triethoxysilylpropyl) disulfide, 4 to 7 parts of polyhedral oligomeric silsesquioxane, 5 to 8 parts of curing agent, 0.8 to 1.8 parts of flatting agent and 0.4 to 0.9 part of defoaming agent. 2.5 to 4.5 parts of polyether-ether-ketone micro powder and 1.2 to 2.8 parts of fluorine-containing phosphate ester. According to the invention, the resin is modified through chemical bridging, the modified graphene and the nano-coated powder are matched to construct a synergistic enhancement system, and the interface bonding is optimized by the composite coupling agent. The coating is excellent in adhesive force, corrosion resistance and mechanical property, good in processing fluidity and high in aging resistance and thermal stability, solves the problem that a traditional product is short in performance, and meets the industrial requirement.

The invention belongs to the technical field of flame-retardant macromolecules, and particularly relates to intrinsic heat-conducting flame-retardant recycled epoxy resin and a preparation method thereof. The preparation method comprises the following steps: (1) carrying out a reaction on diethanol amine and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) to obtain an intermediate A; and (2) carrying out condensation polymerization on the intermediate A and phenylphosphonic acid to prepare the phosphate-terminated polyester flame retardant (PEF). And (3) carrying out epoxidation on 4, 4 '-biphenol to prepare the liquid crystal epoxy precursor LEP. And (4) mixing PEF, LEP and 3, 3 '-dithiodipropionic acid, and heating and curing to prepare the epoxy resin. The prepared epoxy resin has intrinsic heat conduction, flame retardance and efficient recoverability, and is a high polymer material with great potential.

The invention discloses a UV photocureable coating as well as a preparation method and application thereof in automobiles, and relates to the technical field of coatings. When the UV photocureable coating is prepared, 4-aminophenylboronic acid is dehydrated to prepare aminated boron oxygen six-ring; carrying out a reaction on the aminated boroxane and diallyl chlorophosphate to prepare functionalized boroxane; the preparation method comprises the following steps: sequentially reacting graphene oxide with 3-chloropropyltriethoxysilane and 1, 3-diallyl-1, 3, 5-triazine-2, 4, 6-triketone, so as to obtain modified graphene; the preparation method comprises the following steps: reacting epoxy resin with 2-butenal thiosemicarbazone to prepare modified epoxy resin; and uniformly mixing the modified epoxy resin, the epoxy acrylate resin, the modified graphene, the functionalized boroxane, the 1, 6-hexanediol diacrylate and the 1-hydroxycyclohexyl phenyl ketone, so as to obtain the UV photocureable coating. The UV photocureable coating prepared by the invention has excellent flame retardant, self-repairing and mechanical properties.

The invention discloses an IPN multi-element heat-conducting structural adhesive resistant to high and low temperature damp heat and a preparation method thereof, and belongs to the field of IPN multi-element structural adhesives. The structural adhesive is prepared by matching a component A and a component B according to a volume ratio of 0.9: 1.1-1, the component A is prepared from the following raw materials in parts by weight: 10 to 20 parts of silane modified polyether resin A, 10 to 20 parts of silane modified polyether resin B, 2 to 5 parts of amino-containing silane coupling agent, 0.1 to 0.5 part of catalyst, 1 to 2 parts of epoxy curing agent A, 0.5 to 1 part of self-made epoxy curing agent B, 0.1 to 1 part of catalyst, 1 to 3 parts of first aid, 0.01 to 0.03 part of color paste and 50 to 70 parts of first heat-conducting filler; the component B is prepared from the following raw materials: 10 to 20 parts of epoxy resin A, 5 to 10 parts of self-made epoxy resin B, 5 to 10 parts of reactive diluent, 50 to 70 parts of second heat-conducting filler, 0.1 to 1 part of second aid, 0.01 to 0.03 part of color paste and 1 to 1.5 parts of water. The adhesive is environment-friendly in component, has excellent heat-conducting property and excellent operation performance, is smooth in construction, and can be used for firmly bonding a base material.

The invention provides a low-warpage and high-stability film sealing adhesive, a preparation method thereof and a chip packaging method. The film sealing adhesive comprises the following components in percentage by mass: 80%-84% of epoxy modified silicon dioxide, 7%-9% of alicyclic epoxy resin, 8%-10% of an anhydride curing agent, 0.1%-0.2% of a dispersing agent, 0.4%-0.6% of a core-shell structure additive, 0.2%-0.3% of a flatting agent and 0.1%-0.2% of carbon black. The proportion of the epoxy modified silicon dioxide, the alicyclic epoxy resin and the anhydride curing agent is adjusted, and the dispersing agent, the core-shell structure additive and the flatting agent are combined, so that the sedimentation of the filler is reduced, and the internal stress of the film sealing adhesive is alleviated, so that the storage stability of the film sealing adhesive is improved, and the warping of the cured film sealing adhesive is reduced; the surface of the film sealing adhesive has good leveling performance after being printed, and the chip packaging yield can be improved.

The embodiment of the invention discloses an epoxy molding compound, an epoxy molding film and an electronic component, the epoxy molding compound comprises epoxy resin and a zeolite imidazole framework material, and the zeolite imidazole framework material comprises imidazole ligands and metal ions. The zeolite imidazole framework material is used as a curing agent and a nano reinforced phase, imidazole groups on the surface of the zeolite imidazole framework material can be subjected to a ring-opening reaction with epoxy resin to form covalent bonds, the zeolite imidazole framework material can induce the epoxy resin to generate a microcrack deflection mechanism, and the zeolite imidazole framework material can promote curing of the epoxy resin, so that the epoxy resin is cured, and the curing effect is improved. Therefore, the thermal expansion coefficient of the epoxy molding compound is reduced, the fracture toughness of the epoxy resin is improved, and the thermal stability of the epoxy molding compound is improved.

The invention relates to the technical field of flame retardance, and discloses a flame-retardant coating and a preparation method thereof.The flame-retardant coating is obtained by adding phenolic resin, polycarbonate, phosphorus-containing modified phenolic resin, boric acid-containing benzoxazine, an organic silicon resin defoaming agent, a propylene glycol film-forming agent and water into a stirrer and stirring. The flame-retardant coating contains a large amount of anacardol, long chains in the anacardol can also be crosslinked to form a net-shaped structure, a net-shaped carbon skeleton structure is formed under high-temperature carbonization, degradation products are inhibited during combustion, and the flame-retardant coating has good fire resistance; wherein oxazolidinone generated by reaction of an epoxy group of epoxidized phenolic resin and an isocyanate group of hexamethylene diisocyanate is a heterocyclic ring with very high heat resistance and also plays a role in synergistic fire resistance; the flame-retardant coating contains a large amount of phosphorus elements, sulfur elements and nitrogen elements, has a good flame-retardant effect, and achieves a synergistic flame-retardant effect.

The invention belongs to the field of electrode paste preparation, and provides low-temperature curing silver-coated copper paste for a heterojunction solar cell and a preparation method of the low-temperature curing silver-coated copper paste. Ethyl cellulose is adopted as a matrix material, a stable matrix network is provided for slurry through good cohesiveness and dispersity of ethyl cellulose, and a network structure with a high crosslinking degree is formed by adding modified phenolic resin, organic silicon modified epoxy acrylate and other chemical modification materials into the slurry. The mechanical strength and adhesive force of the slurry are further enhanced, surface modification is carried out on inorganic filler such as silver-coated copper powder and bismuth oxide through a silane coupling agent and a titanate coupling agent, and the interface bonding force between the filler and an organic matrix is enhanced through silicon-oxygen bonds formed on the surface of the filler; by adding the carboxylated polyamide wax and the organic bentonite, the agglomeration tendency of the filler is reduced by utilizing the adsorption and electrostatic repulsion effects of the carboxylated polyamide wax and the organic bentonite on filler particles, and the obtained conductive slurry has the characteristics of excellent conductivity and low-temperature rapid curing.

The invention relates to the field of adhesives, in particular to a structural adhesive epoxy composition and a preparation method thereof. The structural adhesive epoxy composition is prepared from the following raw materials: epoxy resin, a toughening agent, a reinforcing agent, filler, a latent curing agent, a latent accelerant, a chemical foaming agent, a physical foaming agent and the like. Finally, the epoxy composition prepared by the invention can be used as a structural adhesive raw material, has ultrahigh expansion rate, low-temperature rapid curing capacity and structural adhesive property, and also has good mechanical properties and excellent comprehensive application effect, so that the complex requirements of the application field of the prior art on the structural adhesive raw material are met.

The invention belongs to the technical field of insulation and heat dissipation coatings, and particularly relates to an insulation and heat dissipation coating composition for a lithium battery and a preparation method of the insulation and heat dissipation coating composition. The insulating heat dissipation coating composition is prepared from the following raw materials: modified epoxy resin, heat conduction filler, a defoaming agent, a flatting agent, a curing agent and a solvent, a preparation method of the modified epoxy resin comprises the following steps: firstly, preparing fluorinated silane by utilizing an epoxy compound to perform ring-opening reaction and esterification reaction, and then preparing the modified epoxy resin by taking the fluorinated silane, bismaleimide and bisphenol A epoxy resin as raw materials through chain extension reaction. According to the invention, the modified epoxy resin, the heat-conducting filler and other raw materials are compounded, and the prepared coating composition has excellent weather resistance, heat and humidity resistance, wear resistance and chemical corrosion resistance by adjusting the raw material ratio and optimizing the process conditions, and also keeps good adhesive force, impact resistance, heat dissipation and insulativity at the same time.

The invention discloses an epoxy resin-based NTC (Negative Temperature Coefficient) composite material containing ionic liquid and carbon black as well as a preparation method and application of the epoxy resin-based NTC composite material. The preparation method of the material comprises the following steps: mixing the ionic liquid and the epoxy curing agent, heating on a heating table, stirring and mixing at the same time, then adding the epoxy resin, the carbon black, the surfactant and the solvent, mechanically stirring and uniformly mixing, and heating in a vacuum oven to remove the solvent to obtain the material. And then carrying out hot pressing for a certain time through a press vulcanizer at a certain temperature to obtain the epoxy resin-based NTC composite material containing the ionic liquid and the carbon black. The epoxy resin-based NTC composite material containing the ionic liquid and the carbon black has the advantages of high B value, good mechanical strength, high heat conductivity coefficient, high crosslinking density and the like, and the preparation method is simple to operate, mild in reaction condition, low in raw material cost and suitable for large-scale industrial production and application.

The invention discloses a water-based multi-layer degradable self-polishing ship antifouling coating system and a preparation method thereof, and belongs to the field of marine anticorrosion and antifouling materials. The system is composed of a zinc-rich primer, a modified epoxy intermediate paint and a functionalized finish paint. The finish paint takes polyhydroxyalkanoate as a matrix, and integrates a self-stratification modifier capable of forming a silicon-rich top layer during curing and a latent dual-curing system capable of realizing normal-temperature curing through a synergistic effect. According to the present invention, the mixing mechanism of dynamic self-polishing and static fouling release is adopted, and the innovative curing technology is combined, such that the long working life, the excellent mechanical property and the long-acting antifouling ability are achieved. The drawing adhesive force of the system is not lower than 7.9 MPa, and the environment-friendly requirements that the content of volatile organic compounds is smaller than or equal to 50 g / L, and the content of free diisocyanate monomers is smaller than or equal to 0.1 wt% are met.

The invention belongs to the technical field of protective coatings, and discloses an anti-corrosion, wear-resistant and high-temperature-resistant coating as well as a preparation method and application thereof. The coating comprises a primer, a middle transition layer and a finish; the raw materials of the primer comprise a primer material and a primer curing agent component; the primer material comprises modified epoxy phenolic resin, a primer functional filler, a first mixed solvent, a high-temperature-resistant coupling agent and an anti-settling agent; the raw materials of the middle transition layer comprise a middle transition layer material and a middle curing agent component; the materials of the middle transition layer comprise polyimide modified epoxy resin, a wear-resistant filler, a reactive diluent, a carbon nanotube, a first dispersant and a compatilizer; the raw materials of the finishing paint comprise a finishing paint material and a finishing paint curing agent component; the finishing paint material comprises organic silicon modified fluorocarbon resin, finishing paint functional filler, a second mixed solvent, a second dispersing agent and a flatting agent. According to the invention, a resin-based composite coating system is synergistically designed through multi-phase materials, so that optimal balance of corrosion resistance, wear resistance, toughness and high temperature resistance of the coating is realized.

The invention provides a diepoxy alkoxy anthracene photosensitizer, and relates to the field of photopolymerization. The invention further comprises a light-cured resin composition containing the diepoxy alkoxy anthracene photosensitizer, a light-sensitive dry film containing the diepoxy alkoxy anthracene photosensitizer and application of the light-cured resin composition and the light-sensitive dry film. The photosensitizer provided by the invention has the characteristics of low migration before curing and low precipitation after curing, and is excellent in photosensitive property and high in photobleaching efficiency; the polymer can be widely applied to the fields of photopolymerization and photocuring of dry films, paints, coatings, printing ink, forming materials and the like; in a photosensitive dry film, the photosensitizer cannot migrate to a polyethylene film, and when an electroplating process is carried out after exposure and development, fragments cannot be separated out to pollute electroplating liquid, so that undesirable phenomena of short circuit, open circuit and the like of an anti-corrosion pattern are avoided, and the yield of a product is remarkably improved.