89 results about "Vinyl siloxane" patented technology

The invention relates to the field of adhesives, and particularly discloses an OCA optical adhesive for a folding screen and a preparation method of the OCA optical adhesive. The OCA optical adhesive for the folding screen is prepared from the following raw materials in parts by weight: 60 to 80 parts of urethane acrylate, 15 to 25 parts of organic silicon grafted glycidyl ether, 20 to 30 parts of a diluent, 5 to 10 parts of a photoinitiator and 1 to 2 parts of an antioxidant, the organic silicon grafted glycidyl ether is prepared by reacting vinyl siloxane, pentaerythritol triallyl ether, allyl glycidyl ether and a catalyst. The OCA optical cement for the folding screen prepared by the invention is applied to the folding screen, and can keep relatively good elasticity, bending resistance and bonding strength in the long-term repeated folding use process, and wrinkles and bubbles are not easy to appear.

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.

A silicone rubber with UV aging resistance and low water absorption and its preparation method and application are provided. The preparation method uses a coupling agent KH570 and glyceryl monostearate to perform modified treatment on titanium dioxide to obtain modified titanium dioxide, uses a surface-modified coupling agent A171 and glyceryl monostearate to perform modified treatment on fumed silica to obtain modified fumed silica, and further performs subsequent treatment on methyl vinyl siloxane raw rubber, silicone oil, aluminum hydroxide, the modified fumed silica, the modified titanium dioxide, zinc oxide, α-alumina, a coupling agent KH560, a defoamer, iron oxide and a vulcanizing agent to obtain the silicone rubber. The silicone rubber prepared by the preparation method has low water absorption and excellent aging resistance, and its mechanical and electrical properties are also superior.

The invention relates to an improved photoelectric coupler packaging electroplating technology which comprises the following steps that S10, self-repairing microcapsules are dispersed into electroplating liquid, the microcapsules comprise wall materials and core materials, and the core materials comprise vinyl siloxane and chloroplatinic acid catalysts; s20, sequentially forming a nano gradient composite coating structure on the surface of the substrate, wherein the composite coating structure comprises a substrate layer, a transition layer, a main functional layer and a packaging layer; and S30, carrying out micro-area deposition by adopting a light-induced selective electroplating process, wherein the micro-area deposition comprises laser micro-area activation, pulse electroplating deposition and in-situ ultraviolet curing. According to the electroplating process, through the nanometer gradient composite coating structure, the interface stress concentration is reduced through layer-by-layer transition of the material and the thickness, the thermal cycle resistance of the coating is improved, and meanwhile the balance among conductivity, mechanical strength and thermal stability is achieved.

The invention relates to the technical field of breathable adhesive tapes, in particular to a double-layer composite high-breathability low-sensitivity adhesive tape and a preparation method thereof. The adhesive tape comprises a hydrophobic surface layer material, a high-breathability low-sensitivity composite adhesive and release paper. The high-breathability and low-sensitivity adhesive tape comprises a three-dimensional net-shaped breathable layer and a low-sensitivity adhesive layer. The hydrophobic surface layer material adopts a polyvinylidene fluoride electrostatic spinning nanofiber membrane with high specific surface area and porosity, so that the hydrophobicity and the adhesion with the lower layer material are improved; according to the high-breathability and low-sensitivity adhesive tape, polycaprolactone, a polylactic acid-glycolic acid copolymer and polyurethane are copolymerized to obtain a multifunctional three-dimensional net-shaped breathable layer; the high-breathability and low-sensitivity composite adhesive tape is prepared from dopamine modified polydimethylsiloxane microfibers decorated by oxidized dextran modified vinyl siloxane tip fibers, and the adhesive force and biocompatibility of the adhesive tape and skins with different roughness degrees are enhanced. Meanwhile, the lignosulfonate surfactant is added, so that the reproduction of bacteria and fungi in an adhesive tape attachment area can be inhibited.

The invention discloses a low-smoke halogen-free self-crosslinking cable material for a photovoltaic cable and a preparation method of the low-smoke halogen-free self-crosslinking cable material. The low-smoke halogen-free self-crosslinking cable material for the photovoltaic cable is prepared from the following components in parts by weight: 40 to 50 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of polyolefin elastomer resin, 10 to 15 parts of linear low-density polyethylene, 3 to 5 parts of modified montmorillonite, 3 to 5 parts of magnesium hydroxide, 5 to 10 parts of vinyl siloxane, 0.5 to 2 parts of initiator, 1 to 2 parts of antioxidant, 1 to 2 parts of ultraviolet light absorber, 0.1 to 5 parts of compatilizer, 0.5 to 3 parts of lubricant and 0.1 to 1 part of antioxidant. And 0.3 part of a catalyst. According to the cable material provided by the invention, through collaborative design of a modified montmorillonite / magnesium hydroxide flame-retardant system, a silane self-crosslinking technology and an anti-aging functional aid, triple breakthrough of flame-retardant high efficiency, weather-resistant long-term effect and environmental protection safety is realized.

The invention discloses an anti-corrosion oil-resistant corrugated pipe inner layer coating and a preparation method thereof. The coating comprises acrylic acid modified epoxy resin, epoxy phosphate, an auxiliary agent, a curing agent and water. The preparation method comprises the steps of synthesis of acrylic acid modified epoxy resin, synthesis of epoxy phosphate, epoxy mixing reaction, neutralization reaction, coating preparation and the like. The preparation method comprises the following steps: adding a copolymer side chain with acrylic acid, styrene and vinyl siloxane to a side chain in epoxy resin to obtain acrylic acid modified epoxy resin, and introducing a phosphate end group to an end group of the epoxy resin to obtain epoxy phosphate; epoxy phosphate and acrylic acid are used for modifying epoxy resin, and an initiator is supplemented for secondary polymerization chain extension and cross-linking reaction, so that the obtained epoxy mixture has the curing film stability of an epoxy coating, the compact isolation effect of acrylic resin, the high adhesiveness of silicon resin to a metal surface and the phosphating treatment characteristic of phosphoric acid; and the paint has excellent water resistance, oil resistance, rust resistance and other corrosion resistance.

The invention provides a barrier laser film and a preparation method thereof, the barrier laser film sequentially comprises a substrate layer, a barrier layer and a barrier adhesion layer from bottom to top, the barrier layer has a three-dimensional network structure and has hydrophobic styrene, norbornene and vinyl siloxane groups; the barrier adhesion layer is provided with a hydrophobic polyurethane chain segment, nano silicon dioxide particles and styrene, so that the hydrophobicity and the gas barrier property can be improved; both the barrier layer and the barrier adhesion layer have compact three-dimensional network structures and have reversible imine bonds generated by Schif alkali reaction of keto groups of diacetone acrylamide serving as a cross-linking agent and amino groups of primary amine, so that the density of the three-dimensional network structures can be further improved, and self-repairing of the three-dimensional network structures can be realized; the density of the three-dimensional network structure is maintained, and excellent gas barrier property and self-repairing property are realized through the synergistic effect of the two.

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.

The invention relates to the field of high polymer materials, and discloses a high-transparency and high-tear-resistance gas-phase silicone rubber composite material which is prepared by reacting raw materials containing the following components, the base rubber is an octamethylcyclotetrasiloxane (D4) monomer with the purity of more than or equal to 99.5%, and the content of hydrogen-containing siloxane impurities is less than or equal to 50ppm after vacuum distillation treatment; the nano filler is a core-shell type TiO2 coated SiO2 filler, the particle size of inner core TiO2 is 20 nm, the thickness of an outer shell SiO2 layer is 5-8 nm, the surface of the SiO2 layer is grafted with a silane coupling agent KH-570, and the grafting rate is larger than or equal to 85%; the flexibilizer is a hyperbranched organic silicon flexibilizer with the branching degree being greater than or equal to 80%; the initiator is a peroxide initiator DCP; the block ratio of the styrene-vinyl siloxane block copolymer is 3: 1, the shore hardness of the composite material is 70 degrees, the light transmittance is larger than or equal to 92%, and the tearing strength is larger than or equal to 35 kN / m. Compared with the prior art, the high-performance gas-phase silicone rubber provided by the invention has the advantages of high light transmittance and high tear strength, and has great technical value and economic significance.

The invention discloses an organic silicon heat-conducting coating as well as a preparation method and application thereof. The high-temperature-resistant ceramic material is prepared from the following raw materials in parts by weight: 6-10 parts of first vinyl siloxane resin, 2-6 parts of second vinyl siloxane resin, 1-3 parts of hydrogen-containing silicone oil, 6-8 parts of fumed silica, 0.5-0.8 part of a platinum catalyst, 0.8-1.5 parts of a silane coupling agent, 12-25 parts of carbon nanotubes, 20-30 parts of boron nitride and 30-50 parts of aluminum nitride. Wherein the viscosity of the first vinyl siloxane resin is 300 to 800 cps / 25 DEG C; the viscosity of the second vinyl siloxane resin is 2000 to 5000 cps / 25 DEG C; the hydrogen content of the hydrogen-containing silicone oil is 8-12 mmol / g. A coating layer prepared from the organic silicon heat-conducting coating has excellent heat conductivity, adhesive force, boiling resistance and aging resistance, is easy to construct and has a wide application prospect.

The invention provides a heat-conducting water-blocking sealant, a preparation method thereof and a photovoltaic module. The heat-conducting and water-blocking sealant is prepared from the following raw materials in parts by mass: 50 to 100 parts of methyl vinyl siloxane, 50 to 100 parts of lignin, 10 to 50 parts of diamond particles and / or diamond alloy particles, 0.5 to 10 parts of a first cross-linking agent, 0.5 to 10 parts of a second cross-linking agent, 0.5 to 5 parts of a coupling agent and 0.05 to 1 part of a catalyst, wherein the first cross-linking agent is prepared from one or more of dicumyl peroxide, benzoyl peroxide, toluene diisocynate and hexamethylene diisocyanate; the second cross-linking agent comprises polymethylhydrosiloxane. The heat-conducting and water-blocking sealant disclosed by the invention has relatively good heat-conducting property, water-blocking property and electrical insulation property.

The application belongs to the technical field of cable materials, and discloses a cold-resistant and anti-cracking type special cable made of silicone rubber, which comprises a conductor cable core, an inner protective sleeve and an outer protective sleeve from inside to outside, wherein the raw materials of the outer protective sleeve comprise end-vinyl diphenyl siloxane, methyl vinyl siloxane, silane modified nano silicon dioxide, polyborosiloxane, an inhibitor, hydroxyl silicone oil, modified anti-ultraviolet polyurethane, a platinum catalyst and tetra(dimethylsiloxane) silane; diphenyl siloxane with a diphenyl side chain is selected as a main chain, and the modified anti-ultraviolet polyurethane is grafted to effectively destroy the structural regularity, inhibit low-temperature crystallization and prevent cable cracking; 4,4'-diamino benzophenone with anti-ultraviolet function is used as a chain extender and benzotriazole is used as an end-capping agent to be grafted into the polyurethane chain, so that the anti-ultraviolet capacity can be improved and migration can be avoided.

The invention discloses self-adhesive single-component liquid silicone rubber with low compression set and a preparation method thereof. The preparation method comprises the following steps: kneading high-viscosity double-end vinyl polydimethylsiloxane, white carbon black, hexamethyldisilazane and water to prepare base rubber; and uniformly mixing and stirring the base rubber with double-end vinyl polydimethylsiloxane, polydimethylmethylvinylsiloxane, polydimethylmethylhydrosiloxane, a first functional aid, a second functional aid, an inhibitor and a catalyst in proportion to prepare the single-component liquid silicone rubber. The silicone rubber has excellent bonding performance on various substrates such as stainless steel, aluminum materials, copper materials, kovar alloys, nylon, polycarbonate and PBT (polybutylene terephthalate), has excellent mechanical properties and low compression set rate, is suitable for sealing and bonding of various automobile, industrial and electronic components, and has wide application prospects. The present invention relates to a sealing strip, in particular to a sealing adhesive scenario for in-situ curing sealing gasket (CIPG) applications, instead of a conventional sealing strip.

The invention discloses high-temperature-resistant silicone rubber and a preparation method thereof, and belongs to the field of polymer compositions. The silicone rubber is composed of vinyl-terminated polydimethylsiloxane, fumed silica, hydroxyl silicone oil, a hydrogen-containing silicone oil cross-linking agent, a platinum catalyst, an inhibitor methyl butynol, cerium oxide and zinc oxide whiskers. During preparation, vinyl siloxane and 1 / 2 of white carbon black are subjected to vacuum banburying for 40 min at the temperature of 155 DEG C, the remaining white carbon black and hydroxyl silicone oil are added to be mixed for 50 min at the temperature of 125 DEG C, other components are sequentially added after cooling, and vulcanization is conducted at the temperature of 170 DEG C * 15 MPa. The shore A hardness of the obtained silicone rubber is greater than or equal to 63, the retention rate of elongation at break is greater than or equal to 485%, the retention rate of tensile strength after aging at 350 DEG C for 72 hours is greater than or equal to 86%, the thermal weight loss is 5%, the temperature is greater than or equal to 476 DEG C, the Mooney viscosity is less than or equal to 47, and the silicone rubber has excellent processability and high-temperature stability.

The preparation method comprises the following steps: carrying out surface activation treatment on boron nitride nanosheets, and carrying out coupling agent modification treatment on silver-coated carbon nanotubes, so as to respectively obtain surface-activated boron nitride nanosheets and modified silver-coated carbon nanotubes; the preparation method comprises the following steps: copolymerizing a phenyl siloxane monomer and methyl vinyl siloxane to prepare a modified silicone rubber matrix; mixing the surface-activated boron nitride nanosheets and aluminum oxide nanowires according to a preset proportion, dispersing the mixture into a modified silicone rubber matrix, and performing low-speed mixing to form a heat-conducting phase composite rubber material; adding the modified silver-coated carbon nanotubes into the heat-conducting phase composite rubber material, performing high-speed mixing to obtain an electric-conducting and heat-conducting mixed rubber material, then applying a directional magnetic field to induce filler arrangement, and performing gradient curing treatment to obtain the electric-conducting and heat-conducting silicone rubber material. The compatibility of isotropic heat conduction and planar electrical conductivity of the material is realized, meanwhile, high flexibility and elasticity are kept, and the comprehensive performance requirements of a high-power electronic device on heat dissipation and electromagnetic shielding are met.

The invention discloses a preparation method and application of a nano heat-insulating metal oxide composite coating. The preparation method comprises the following steps: preparing a nano ATO crystal of which the surface contains silicon hydroxyl; preparing polymerizable ATO (antimony tin oxide) nano particles; and uniformly mixing the polymerizable ATO nano particles, the silane modified nano silicon dioxide, the self-emulsifying polyurethane emulsion and the auxiliary agent to obtain the required coating. Nanometer ATO crystallization and surface silicon hydroxyl modification are synchronously completed in a hydrothermal environment, and the problem of uneven coating caused by traditional two-step modification is solved; after the high-temperature reaction, cold ethanol is used for realizing shock cooling to stop crystal growth, so that the problem of thermodynamic instability of the nanocrystalline is solved; the interfacial compatibility is improved by introducing a vinyl-containing siloxane monomer; by compounding the polymerizable ATO nano particles, the silane modified nano silicon dioxide, the self-emulsifying polyurethane emulsion and the auxiliaries, a stable topological structure connected by covalent bonds is constructed, and the aging resistance, the heat insulation property and the adhesive force of the coating are remarkably improved.

The present invention relates to the technical field of high polymer material synthesis, and discloses an anti-clogging microreactor for high viscosity silicone rubber synthesis, the anti-clogging microreactor comprises a microreactor chip, and the interior of the microreactor chip is provided with a tree-shaped bifurcated microchannel network based on fractal structure design; the invention relates to a continuous preparation method of an anti-clogging microreactor for synthesizing high-viscosity silicone rubber. The continuous preparation method comprises the following steps: S1, precisely metering a methyl cyclosiloxane monomer and a vinyl siloxane monomer, and then inputting the methyl cyclosiloxane monomer and the vinyl siloxane monomer into the microreactor; s2, carrying out a controllable ring-opening polymerization reaction in the microchannel; and S3, quickly terminating the reaction by injecting a terminating agent on line, and controlling the molecular weight and distribution of the polymer. Compared with the prior art, the method has the advantages that the problems that an existing microreactor is prone to blockage and difficult to operate stably for a long time when treating a high-viscosity siloxane polymerization system are solved, meanwhile, the method can achieve accurate control over product quality and continuity and intellectualization of the production process, the production efficiency is remarkably improved, and energy consumption is reduced.

The invention relates to a preparation method of supported porous carbon for catalyzing hydrosilylation reaction, which comprises the following steps: (S1) mixing thermoplastic phenolic resin, polyindole boric acid and a stabilizer, and heating to react to obtain modified phenolic resin; the mass ratio of the thermoplastic phenolic resin to the polyindole boric acid is 100: (15-25); (S2) dissolving the modified phenolic resin, a pore-foaming agent and a curing agent in a solvent, removing the solvent, and crushing to obtain solid particles; (S3) carrying out thermocuring, pre-oxidation, carbonization, activation and oxidation treatment on the solid particles in sequence to obtain oxidized porous carbon; (S4) modifying the oxidized porous carbon with vinyl siloxane to obtain vinyl siloxane modified porous carbon; and (S5) dipping the vinyl siloxane modified porous carbon in an alcoholic solution of platinum salt to obtain the supported porous carbon. The supported porous carbon prepared by the invention has excellent catalytic efficiency and good stability when being used for catalyzing hydrosilylation reaction, and can be recycled.

The present application specifically discloses a silicone-modified exterior wall waterproof coating and a preparation method thereof. A silicone-modified exterior wall waterproof coating comprises raw materials in the following weight parts: The waterproof coating comprises raw materials in the following weight parts: 90-120 parts of amino siloxane, 90-120 parts of vinyl siloxane, 50-80 parts of mercaptoethanol, 3-5 parts of dendritic molecular nano-silicon composite material, 100-120 parts of alcohol solvent, and 350-450 parts of water. The present application has the advantages of improving the tensile property and wear resistance of the exterior wall waterproof coating for buildings.

The application discloses a platinum complex with controllable activity and a preparation method and application thereof, which is formed by coordination of vinyl siloxane, modified ligand and chloroplatinic acid; the modified ligand is prepared by reaction of maleic anhydride, allylamine and hydroxymethyl dimethyl phosphite. The application introduces amide groups and phosphite groups into the molecular chain of maleic anhydride, uses the groups as coordination compounds to coordinate with vinyl siloxane and platinum, and can improve the normal-temperature storage stability of the platinum catalyst while still keeping high catalytic activity of the platinum catalyst on the hydrosilylation reaction; when the platinum complex is used for catalyzing preparation of addition-type liquid silicone rubber, no inhibitor needs to be added, and the silicone rubber has good mechanical properties.

This invention discloses a superhydrophobic radiation-cooling polymer coating, its preparation method, and its application. The coating is white and possesses a bicontinuous micro / nano porous structure. It is prepared by a ternary copolymerization reaction of polyurethane acrylate oligomers, acrylate reactive diluents, and vinyl siloxane porogens. The method involves initiating free radical polymerization of monomers in the porogen under ultraviolet light, inducing rapid phase separation, and naturally evaporating the porogen to obtain the coating. This coating exhibits superhydrophobicity without post-treatment, virtually no absorption in the solar spectrum, and near-100% emissivity in the mid-infrared window. Furthermore, the optical properties and superhydrophobicity of the coating are minimally affected by long-term ultraviolet irradiation, thermal aging, acids, and alkalis. This coating can be applied over large areas in high-performance radiation-cooling applications.

The invention provides alkoxy-terminated polysiloxane and a preparation method thereof.107 silicone rubber, a platinum catalyst and an end-capping reagent are mixed and stirred at the room temperature for a dehydrogenation reaction, and the alkoxy-terminated polysiloxane is obtained. The end-capping reagent is obtained by mixing hydrogen-containing double end caps, vinyl siloxane and a platinum complex catalyst and then reacting at the temperature of 20-35 DEG C. The preparation process of the terminated 107 silicone rubber is carried out at room temperature, the raw material cost is low, the process is simple, the condition is mild, and the method is safe and energy-saving. The prepared terminated 107 silicone rubber is colorless transparent liquid, and has the advantages of controllable viscosity, high product termination rate, no viscosity peak and good storage stability. In addition, the reaction endpoint is easy to judge, and the reaction endpoint can be determined according to whether a viscosity peak exists or not.

The invention provides a resin composition, and a copper-clad plate and a printed circuit board containing the same. The resin composition comprises the following components in parts by mass: 10-20 parts of T-type polyvinyl siloxane resin, 10-30 parts of a maleimide compound and 30-80 parts of thermosetting polyphenyl ether resin, the content of vinyl in the T-type polyvinyl siloxane resin is greater than or equal to 1.5 mmol / g. Through the design of the T-type polyvinyl siloxane resin and the compounding and mutual cooperation of the T-type polyvinyl siloxane resin, the maleimide compound and the thermosetting polyphenyl ether resin, the resin composition has a low dielectric constant Dk, a low dielectric loss tangent Df, a high glass transition temperature Tg, a low thermal expansion coefficient CTE and low hygroscopicity; the halogen-free flame retardant, excellent heat resistance, humidity and heat resistance and dielectric stability are realized, the phenomenon of dielectric property deterioration in a humid environment is effectively reduced, and the comprehensive performance is excellent.

The invention provides POE (Polyolefin Elastomer) functional resin as well as a preparation method and application thereof. The POE functional resin is prepared from the following raw materials in parts by weight: 100 parts of POE resin, 0.1 to 5 parts of first monomer alkoxy silane, 0.1 to 3 parts of second monomer polyvinyl siloxane and 0.05 to 0.5 part of initiator. The POE functional resin provided by the invention can solve the problems of low grafting rate, poor polarity increasing effect, low bonding strength, assistant migration and precipitation and the like in the existing POE grafted silane technology, and can achieve the technical effects of improving the silane monomer grafting rate, increasing the bonding force between POE and glass, improving the adhesive film strength and improving or solving the assistant migration and precipitation problem.

The invention discloses a two-component high-thermal-conductivity gel and a preparation method thereof, and belongs to the technical field of thermal interface materials, and the key point of the technical scheme is that the two-component high-thermal-conductivity gel comprises a component A and a component B, the component A is prepared from the following raw materials in parts by mass: 90 to 110 parts of phenyl vinyl siloxane, 2 to 4 parts of fluorinated silicon oil, 4.5 to 6 parts of hydrogen-containing silicone oil, 1700 to 1900 parts of heat-conducting filler, 8 to 12 parts of surfactant and 0.1 to 0.3 part of inhibitor; the component B is prepared from the following raw materials in parts by mass: 90 to 110 parts of phenyl vinyl siloxane, 2 to 4 parts of silicon fluoride oil, 1700 to 1900 parts of heat-conducting filler, 8 to 12 parts of surfactant and 1 to 3 parts of catalyst. According to the invention, through crosslinking density control and design of the interface controllable stripping layer, good balance between heat-conducting property and easy stripping property is realized, and the application reliability and the service life of the gel are obviously improved and prolonged.

The application provides a kind of light-heat dual-curing multi-hybrid coating, coating, its preparation method and application. The light-heat dual-curing multi-hybrid coating includes, by mass fraction: polybutadiene epoxy resin 5.0-15.0 parts, polyol polymer 10.0-20.0 parts, filler 3.0-9.0 parts, active diluent 40.0-60.0 parts, blocked isocyanate resin 2.0-8.0 parts, liquid latent epoxy accelerator 0.2-0.3 parts, vinyl siloxane 0.5-2.0 parts, and photoinitiator 3.0-6.0 parts. The coating formed by the coating provided by the application has good adhesion and exhibits excellent insulation and protection performance; the coating requires short curing time and can be quickly cured under light-heat dual-curing conditions.

The invention discloses a synthesis method of a high-purity benzocyclobutenyl organosilicone monomer for semiconductor packaging resin, which specifically comprises the following steps: by taking vinyl silane and 4-bromobenzocyclobutene as reaction raw materials, firstly preparing benzocyclobutene-vinyl silane through Heck reaction, and then preparing benzocyclobutene-vinyl silane by taking a Meerwein reagent as a medium and potassium carbonate as an additive, thereby obtaining the high-purity benzocyclobutenyl organosilicone monomer for semiconductor packaging resin. And carrying out mild reaction in a polar aprotic solvent to directly prepare the high-purity benzocyclobutene organic silicon monomer tetramethyl divinyl siloxane dibenzocyclobutene. Compared with the traditional preparation method, the method has the advantages of wide reaction raw material source, low price, few reaction steps and high yield in synthesis, and the reaction is beneficial to the high purification process of the monomer, so that the method is more suitable for industrial batch production.

The application discloses a powdery interface agent prepared from a tertiary acetate redispersible emulsion powder, relates to the technical field of building materials, and can be reduced into an aqueous emulsion by stirring and dispersing after adding water and is used for interface sealing of concrete and cement-based surfaces. The application prepares the redispersible emulsion powder from a tertiary acetate emulsion by a spray drying process, and the emulsion is prepared from the following components in parts by weight: vinyl acetate 50-80 parts, unsaturated acid monomer 1-5 parts, tertiary carbonic acid vinyl ester 30-50 parts, vinyl siloxane 0.3-3.0 parts, polyvinyl alcohol 5-20 parts, emulsifier 1-5 parts, oxidant 0.3-1.0 parts, and deionized water 95-105 parts. The finally prepared interface agent is prepared from the following components in parts by weight: tertiary acetate emulsion powder 76-84 parts; sodium bicarbonate 8-12 parts; cellulose ether 3-6 parts; and powdery defoaming agent 3-5 parts. The powdery interface agent prepared by the application is stable in performance, is not affected by low-temperature freezing, is convenient to transport, thereby saving a large amount of packaging materials and transportation cost, and meets the current national energy-saving and emission-reducing and environmental protection policies.

A silicone rubber with UV aging resistance and low water absorption and its preparation method and application are provided. The preparation method uses a coupling agent KH570 and glyceryl monostearate to perform modified treatment on titanium dioxide to obtain modified titanium dioxide, uses a surface-modified coupling agent A171 and glyceryl monostearate to perform modified treatment on fumed silica to obtain modified fumed silica, and further performs subsequent treatment on methyl vinyl siloxane raw rubber, silicone oil, aluminum hydroxide, the modified fumed silica, the modified titanium dioxide, zinc oxide, α-alumina, a coupling agent KH560, a defoamer, iron oxide and a vulcanizing agent to obtain the silicone rubber. The silicone rubber prepared by the preparation method has low water absorption and excellent aging resistance, and its mechanical and electrical properties are also superior.