28 results about "Diphenylsilanediol" patented technology

The invention discloses a heat-insulating silicone rubber foam material with high elasticity and a preparation method thereof, and relates to the technical field of heat-insulating materials. The invention discloses a heat-insulating silicone rubber foam material with high elasticity. The high-temperature-resistant silicone oil composition is prepared from the following raw materials in parts by weight: 40 to 60 parts of vinyl-terminated phenyl silicone oil, 10 to 30 parts of nano silicon dioxide, 40 to 80 parts of modified fly ash hollow microspheres, 2 to 10 parts of cerium dioxide, 1 to 5 parts of sodium bicarbonate, 3 to 8 parts of self-synthesized single-hydroxyl-terminated single-hydrogen-terminated silicone oil, 5 to 15 parts of self-synthesized perhydrosilicone oil, 4 to 10 parts of diphenyl silanediol and 0.1 to 0.3 part of 1-ethynyl cyclohexanol. 0.3 to 0.5 part of a platinum complex catalyst, 0.5 to 1 part of an antioxidant 1010 and 0.5 to 2 parts of a coupling agent KH-560. The silicone rubber foam material prepared by the invention adopts a two-stage foaming and gradient curing process, combines the modified fly ash hollow microspheres and other fillers, has the advantages of high elasticity, good heat insulation property, aging resistance and the like, is environment-friendly in raw materials and stable in process, and is suitable for buffering and heat insulation between battery cells in the fields of new energy automobiles and energy storage.

The invention relates to the field of cables, and discloses a flame-retardant impact-resistant cable and a preparation process thereof.The cable sheath layer is prepared from low-density polyethylene, nitrile rubber, ethylene-vinyl acetate copolymer, modified halloysite nanotubes and a flame-retardant additive, the preparation method comprises the following steps: carrying out acylating chlorination on 2, 4-dihydroxyphenyl)-2H-benzotriazole, reacting with 3, 5-di-tert-butyl-4-hydroxybenzylamine to prepare a modified acylating chlorination ultraviolet absorbent, and grafting the modified acylating chlorination ultraviolet absorbent with aminated halloysite nanotubes to prepare the ultraviolet absorbent. The aminated halloysite nanotube is prepared by using gamma-aminopropyl triethoxy silane to modify the aminated halloysite nanotube; the flame-retardant additive is prepared from a flame-retardant intermediate obtained by reaction of diphenyl silanediol and phosphorus oxychloride and phosphonitrilic chloride trimer through a precipitation polymerization method. The added modified halloysite nanotube and flame-retardant additive can endow the cable with excellent mechanical properties, aging resistance, flame retardance and heat resistance.

The invention discloses a silicone rubber composite material, a silicone rubber-based high-voltage-resistant high-damping composite phase-to-phase spacer and a preparation method thereof, and belongs to the technical field of power transmission line galloping prevention. The composite phase-to-phase spacer is composed of a high-damping silicone rubber composite material and a structural component. The silicone rubber composite material comprises 100 parts of methyl vinyl silicone rubber, 20-40 parts of phenyl silicone rubber, 30-60 parts of fumed silica, 15-40 parts of organosilicon elastomer micro powder, 20-50 parts of modified sericite, 5-15 parts of carbon nanotubes, 10-30 parts of high rubber powder, 10-30 parts of calcined kaolin, 2-4 parts of diphenyl silanediol, 3-8 parts of phenyl silicone oil and 1.5-3 parts of a peroxide vulcanizing agent. The spacer has high damping performance (tan [delta] gt; 0.45, effective damping temperature range gt; -120 DEG C), high pressure (gt; 35 kV / mm) and strong anti-galloping capability, and the galloping phenomenon of the power transmission line under the action of deicing and wind load can be effectively inhibited.

The invention relates to the technical field of viscous materials, in particular to a low-temperature-resistant viscous material for a high-altitude damper. Comprising the following components: 30-50 parts of silicone rubber; 50-60 parts of modified silicone rubber; 10 to 30 parts of polar rubber; 20 to 50 parts of modified white carbon black; 10 to 40 parts of high rubber powder; 10 to 20 parts of a crosslinking accelerator; 10 to 50 parts of organic silicon elastomer micro powder; 1 to 3 parts of diphenyl silanediol; 1-5 parts of phenyl silicone oil; 1-5 parts of a damping agent; and 1 to 2 parts of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane. The prepared low-temperature-resistant viscous material can keep stable viscosity at an extremely low temperature, improves the adaptability in a wide temperature range, has efficient energy consumption capacity, has small influence on the structure, has excellent weather resistance, and can meet the requirement of low maintenance.

The invention belongs to the technical field of polymer flame retardance, and relates to a fluoride-free anti-dripping functional flame retardant for polycarbonate as well as a preparation method and application thereof, in the chemical structural formula of the fluoride-free anti-dripping functional flame retardant for polycarbonate, n is 5-20, and M is Li, Na, K, Rb or Cs; the preparation method comprises the following steps: mixing a metal salt solution of 2, 2 '-disulfonic acid benzidine with an acid-binding agent, dropwise adding a phenylphosphonic dichloride solution, continuing to stir and react after dropwise adding, heating after reaction, dropwise adding a diphenyl silanediol solution, continuing to react after dropwise adding, and finally performing post-treatment to obtain the fluoride-free anti-dripping functional flame retardant for polycarbonate. According to the application of the flame-retardant polycarbonate, polycarbonate and the fluoride-free anti-dripping functional flame retardant for polycarbonate are subjected to melt blending, so that the flame-retardant polycarbonate is prepared. The functional flame retardant disclosed by the invention integrates multiple functions of flame retardance, molten drop resistance, carbon formation enhancement and the like, and flame-retardant polycarbonate prepared from the functional flame retardant realizes no molten drop by virtue of a self-enhanced ceramic carbon layer.

The invention discloses an elastic stress pipe and a preparation method thereof, and relates to the technical field of cable accessories. The elastic stress tube is prepared from the following raw materials in parts by weight: 70 to 100 parts of silicon rubber, 5 to 15 parts of carbon black, 20 to 40 parts of active high dielectric filler, 5 to 10 parts of active magnesium oxide, 30 to 60 parts of fumed silica, 3 to 6 parts of diphenyl silanediol, 0.5 to 1 part of antioxidant, 1 to 5 parts of lubricant, 0.5 to 1 part of sensitization cross-linking agent and 1 to 5 parts of organic peroxide. The elastic stress pipe with high and low temperature resistance (-50 DEG C to + 200 DEG C), high elasticity and high tear resistance can be obtained, and the elastic stress pipe can tightly wrap a cable, does not generate permanent deformation, is waterproof, avoids partial discharge, is long in service life, maximally evacuates electric field stress, and homogenizes an electric field near a cable shielding layer. The preparation method is simple, high in practicability and beneficial to industrial large-scale production.

The application belongs to the technical field of organic silicon and relates to a preparation method of low-viscosity hydroxyl-terminated phenyl silicone oil, which comprises the following steps: (S1) adding diphenylsilanediol, organic acid anhydride and an acidic catalyst into an aprotic polar organic solvent to perform acylation reaction to obtain an acylated product; (S2) adding the acylated product dropwise into an alkaline aqueous solution under stirring until the system is neutral, then performing hydrolysis and polycondensation, separating the upper oil phase after the reaction is completed, and obtaining a phenyl-containing prepolymer; and (S3) mixing the phenyl-containing prepolymer, cyclosiloxane and an alkali metal catalyst, then performing ring-opening copolymerization reaction in an inert atmosphere, and obtaining the low-viscosity hydroxyl-terminated phenyl silicone oil after purification. The viscosity of the hydroxyl-terminated phenyl silicone oil prepared by the application is low, the viscosity at 25 DEG C is 200-1000 mPa.s, the phenyl content is adjustable, there is no methoxy group, the preparation cost is low, and the preparation process is environmentally friendly.

The invention discloses a silicon resin-based super-hydrophobic nano-coating and a production process thereof, and relates to the technical field of waterproof paints.The hydrophobic branched polysiloxane is prepared, surface energy is reduced by adding diphenyl silanediol and introducing phenyl to enhance hydrophobicity, adding octyl triethoxy silane and adding long-chain alkyl, and the hydrophobic branched polysiloxane has the advantages that the surface energy is reduced; and tridecafluorooctyltriethoxysilane is added, and a fluorine-containing group is introduced, so that the hydrophobicity is further improved. According to the invention, trifluoropropyltriethoxysilane is also added, so that the surface energy is reduced, and the hydrophobicity of the nano coating is improved. The problems that epoxy resin is high in polarity, silicon resin is low in polarity, the epoxy resin and the silicon resin are poor in compatibility, and mixing layering and curing phase separation are prone to occurring in the prior art are solved, a large amount of vinyltriethoxysilane is added, vinyl can be subjected to an addition reaction with epoxy groups of bisphenol A type epoxy resin, the compatibility is improved, and therefore the hydrophobicity and compactness of the super-hydrophobic nano coating are improved.

The invention relates to an anti-deformation composite fabric and a preparation method thereof, and belongs to the technical field of coating fabrics. The composite fabric comprises a woven gray fabric and a functional coating, and the functional coating is formed by curing a water-based finishing agent and comprises 32-40 wt% of water-based polyurethane, 1.7-2.1 wt% of an emulsifier, 0.5-0.7 wt% of a leveling agent, 1.1-1.5 wt% of a tackifier and the balance of deionized water; according to the waterborne polyurethane, active chlorosilane of trifluoropropyl trichlorosilane and diphenyl silanediol are substituted to form a fluorine-containing polybenzene ring compound, then diethylenetriamine is used for blocking to prepare a modified monomer, the modified monomer, polyether glycol and hexamethylene diisocyanate are copolymerized, and then 1, 4-butanediol is used for chain extension to prepare the waterborne polyurethane; according to the composite fabric, the deformation resistance is enhanced, and meanwhile, comfortable wearing experience can still be kept.

This invention relates to the field of octaphenylcyclotetrasiloxane preparation technology and discloses a system for preparing high-purity octaphenylcyclotetrasiloxane. The system includes a mixing reactor with a filter plate fixedly installed at the bottom. Multiple pipes are installed on the mixing reactor, and a power source is installed at the top. A rotating shaft is fixedly installed at the output end of the power source, and a stirring shaft is mounted on the rotating shaft. Multiple positioning sleeves are mounted on the stirring shaft, one of which is close to the filter plate. Multiple stirring blades are mounted on each positioning sleeve. This system for preparing high-purity octaphenylcyclotetrasiloxane achieves integrated continuous operation of the entire process of hydrolysis, filtration, washing, and vacuum drying of diphenylsilanediol intermediates through the mixing reactor, filter plate, stirring shaft, positioning sleeves, and stirring blades. This completely avoids the frequent transfer and exposure of materials between different devices in traditional processes, greatly reducing the risks of introducing external impurities, solvent evaporation, and human error.

This application provides a silicone-modified waterborne polyurethane and its preparation method. The preparation method includes the following steps: Hydroxyl-terminated polyether-modified silicone oil and isoflurane diisocyanate are placed in a container, and the temperature is raised to 80-90℃ and maintained for 1.5-2.5 hours; then polytetrahydrofuran and diphenylsilanediol are added sequentially, and the temperature is raised to 85-95℃ and reacted for 2.5-3.5 hours until the -NCO content is close to or reaches the theoretical value, at which point the reaction is stopped to obtain a prepolymer; then the temperature of the prepolymer is lowered to below 40℃, acetone and triethylamine are added, and the reaction is carried out for 3-5 minutes; then the product is transferred to a reaction vessel containing an appropriate amount of deionized water and defoamer and stirred evenly to form an emulsion; finally, a mixture of deionized water, diethylenetriamine, and ethylenediamine is added for emulsification to obtain the silicone-modified waterborne polyurethane.

The invention belongs to the technical field of electric power engineering, and particularly relates to a composite layer material for a cable intermediate joint and a preparation method of the composite layer material. The composite layer material for the cable intermediate joint is composed of an inner semi-conductive layer, an insulating layer and an outer semi-conductive layer, the silicone rubber is prepared from the following raw materials: methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, trifluoropropyl methyl vinyl silicone rubber, a vulcanizing agent, an assistant crosslinker, an accelerant, diphenyl silanediol, an anti-aging agent, trifluoropropyl cage type silsesquioxane, and a mixture of modified nano hydroxyapatite and nano hectorite. According to the composite layer material for the cable intermediate joint, the three layers adopt the consistent siloxane main chain structure and vulcanization system, interlayer chemical compatibility is ensured, synchronous co-crosslinking is achieved, and by adjusting the silicone rubber composition and proportion of all the layers, the composite layer material can be applied to the cable intermediate joint. And it is ensured that the prepared composite layer material for the cable intermediate joint has excellent mechanical and hydrophobic water-blocking performance.

This invention discloses a high flame-retardant insulating phenyl silicone rubber for power applications and its preparation method, belonging to the field of silicone rubber technology. The phenyl silicone rubber, by weight, comprises the following raw material components: matrix material: 80-100 parts of vinyl-terminated polydimethylsiloxane and 20-30 parts of phenyl silicone rubber; reinforcing agent: 30-50 parts of fumed silica; flame retardant: 25-40 parts of modified magnesium hydroxide, 10-15 parts of ammonium polyphosphate, and 5-10 parts of melamine cyanurate; thermally conductive filler: 15-25 parts of nano-boron nitride; structure modifier: 2-4 parts of diphenylsilanediol and 3-6 parts of phenyl silicone oil; crosslinking agent: 8-12 parts of hydrogen-containing silicone oil; catalyst: 0.2-0.4 parts of platinum catalyst; inhibitor: 0.1-0.3 parts of ethynylcyclohexanol; functional additives: 1-3 parts of silane coupling agent and 0.5-1 parts of antioxidant.

The invention discloses a preparation method of high-temperature-resistant phenyl silicone resin, and relates to the field of polymer material chemistry, and the preparation method comprises the following steps: mixing diphenyl dihalosilane and an organic solvent according to a mass ratio of 1: (1-10), slowly adding the mixture into a water solvent system containing weak base for hydrolysis reaction, maintaining the alkalinity of the system to instantaneously neutralize the generated acid, and carrying out solid-liquid separation to obtain the high-temperature-resistant phenyl silicone resin. After the reaction, recrystallizing to obtain a diphenyl silanediol intermediate; dissolving the diphenyl silanediol intermediate in low-carbon alcohol or acetone, adding a strong base catalyst, and carrying out cyclization reaction to generate octaphenylcyclotetrasiloxane crystals; and dissolving the octaphenylcyclotetrasiloxane crystal in an organic solvent, adding an adsorbent, stirring, filtering, adding a precipitating agent with the volume 1-4 times that of the filtrate for recrystallization, and centrifuging and drying the precipitated crystal to obtain the octaphenylcyclotetrasiloxane crystal with the purity of 99.9% or above. According to the preparation method of the high-temperature-resistant phenyl silicone resin, the prepared phenyl silicone resin has high purity, excellent heat resistance, good toughness and stable consistency.

The application belongs to the technical field of electric power engineering, and particularly relates to a composite layer material for cable intermediate joint and a preparation method thereof. The composite layer material for cable intermediate joint is composed of an inner semi-conductive layer, an insulating layer and an outer semi-conductive layer. The insulating layer is composed of the following raw materials: methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, trifluoro propyl methyl vinyl silicone rubber, vulcanizing agent, auxiliary cross-linking agent, accelerator, diphenyl silicone diol, anti-aging agent, trifluoro propyl cage type silsesquioxane, and a mixture of modified nano-hydroxyapatite and nano-laponite. The composite layer material for cable intermediate joint has a consistent siloxane main chain structure and vulcanization system in three layers, which ensures the chemical compatibility between layers and realizes synchronous co-crosslinking. By adjusting the composition and ratio of silicone rubber in each layer, the prepared composite layer material for cable intermediate joint has excellent mechanical and hydrophobic water-blocking properties.

The invention relates to the technical field of ceramic substrates, and provides a high-strength wear-resistant multilayer ceramic substrate and a preparation method thereof. The high-strength wear-resistant multilayer ceramic substrate comprises the following raw materials in parts by weight: 70-80 parts of aluminum oxide, 2-3 parts of a dispersant, 3-5 parts of a plasticizer, 8-12 parts of a binder, 8-10 parts of a sintering aid and 80-90 parts of water, the aluminum oxide is modified aluminum oxide, the modified aluminum oxide is obtained by modifying aluminum oxide with a modifier, and the modifier comprises diphenyl silanediol and a biphenyl compound. According to the technical scheme, the problems of insufficient strength and wear resistance of the multilayer ceramic substrate in the prior art are solved.

The invention discloses a preparation method and application of a tackifier for an organic silicon thermal conductive potting adhesive, and relates to the technical field of potting adhesives using tackifiers and applications thereof. The scheme first uses diphenylsilanediol, trimethylolpropane monoallyl ether and other components as raw materials to prepare a tackifier, and then mixes vinyl silicone oil, the tackifier, hydrogen-containing silicone oil, alkynyl cyclohexanol and other components to prepare the organic silicon potting adhesive. A filler selected from aluminum oxide and aluminum hydroxide is compounded to improve the thermal conductivity and flame retardancy of the organic silicon potting adhesive, and a branched adhesion promoter is used to pretreat the filler to improve the dispersion performance of the filler and the compatibility of the system. The organic silicon potting adhesive finally prepared not only has excellent thermal conductivity and flame retardancy, but also has greatly improved adhesion performance and relatively excellent mechanical properties.

The invention belongs to the technical field of organic silicon, and relates to a preparation method of low-viscosity hydroxyl-terminated phenyl silicone oil, which comprises the following steps: (S1) adding diphenyl silanediol, organic anhydride and an acid catalyst into an aprotic polar organic solvent for acylation reaction to obtain an acylated product; (S2) dropwise adding the acylation product into an alkaline aqueous solution in a stirring state until the system is neutral, then carrying out hydrolytic polycondensation, and separating out an upper oil phase after the reaction is ended, so as to obtain a phenyl-containing prepolymer; and (S3) mixing the phenyl-containing prepolymer, cyclosiloxane and an alkali metal catalyst, carrying out a ring-opening copolymerization reaction in an inert atmosphere, and purifying after the reaction is finished to obtain the low-viscosity hydroxyl-terminated phenyl silicone oil. The prepared hydroxyl-terminated phenyl silicone oil is low in viscosity, the viscosity is 200-1000 mPa.s at the temperature of 25 DEG C, the phenyl content is adjustable, no methoxy group exists, meanwhile, the preparation cost is low, and the preparation process is environmentally friendly.

The application relates to the technical field of ceramic substrates, and discloses a high-strength wear-resistant multilayer ceramic substrate and a preparation method thereof.The high-strength wear-resistant multilayer ceramic substrate comprises the following components by weight: 70-80 parts of alumina, 2-3 parts of a dispersing agent, 3-5 parts of a plasticizer, 8-12 parts of a binder, 8-10 parts of a sintering aid and 80-90 parts of water; the alumina is modified alumina; the modified alumina is obtained by modifying alumina with a modifier; and the modifier comprises diphenylsilanediol and a biphenyl compound.The above technical scheme solves the problems of insufficient strength and wear resistance of the multilayer ceramic substrate in the related art.

The invention relates to a silicone rubber composition, modified silicone rubber and a preparation method thereof. The silicone rubber composition comprises the following components in parts by weight: 100 parts of methyl vinyl silicone rubber, 10-60 parts of fumed silica, 1-20 parts of a silicon-containing compound, 0.1-6 parts of peroxide and 0.1-10 parts of rare earth oxide, wherein the silicon-containing compound is selected from one or more of hydroxyl silicone oil, diphenyl silanediol, dimethyl dimethoxy silane, dimethyl diethoxy silane, methyl phenyl dimethoxy silane, methyl phenyl diethoxy silane and hexamethyl disilazane, and the silicon-containing compound is selected from one or more of hydroxyl silicone oil, diphenyl silanediol, dimethyl dimethoxy silane, dimethyl diethoxy silane, methyl phenyl diethoxy silane and hexamethyl disilazane; the rare earth element in the rare earth oxide is selected from one or more of La, Ce or Sm. The silicone rubber composition provided by the invention can improve the tensile strength and the retention rate of the elongation at break of the silicone rubber after high-temperature aging.

The present application relates to a kind of polyorganosilicon cyclotriphosphazene modified epoxy resin and its preparation method, belong to flame-retardant material field, wherein the preparation method of polyorganosilicon cyclotriphosphazene flame retardant: with hexachlorotriphosphazene, p-hydroxy benzaldehyde, p-aminobenzoic acid, DOPO and diphenylsilanediol as raw material, by four-step reaction is made.Then the preparation method of epoxy resin with flame retardant as modifier: m-phenylenediamine is curing agent, add a series of gradient polyorganosilicon cyclotriphosphazene flame retardant to epoxy resin, after two times of curing, modified epoxy resin is obtained.The present application is mainly used for preparing polyorganosilicon cyclotriphosphazene flame retardant and polyorganosilicon cyclotriphosphazene modified epoxy resin.

The invention relates to the technical field of preparation of oil seal materials, in particular to an anti-aging silicone rubber oil seal material and a preparation method thereof, and the anti-aging silicone rubber oil seal material is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber; 30 to 50 parts of fumed silica; 5-10 parts of hydroxyl silicone oil; 2 to 5 parts of cerium oxide; 3 to 8 parts of ferric oxide; 0.5 to 2 parts of dicumyl peroxide; 1 to 3 parts of diphenyl silanediol; 1-3 parts of zinc oxide; 2-5 parts of molybdenum disulfide; 0.5 to 1.5 parts of iron oxide red; and 1 to 3 parts of Y-aminopropyl triethoxy silane. By adopting a segmented mixing and precise temperature control process, uniform dispersion of components is ensured, structural defects are avoided, volatile matters are thoroughly removed through secondary vulcanization, interface bonding force is enhanced through sand blasting treatment, and compared with a traditional material, the material has the advantages of being excellent in high and low temperature resistance, low in friction coefficient, long in service life and environmentally friendly; the sealing material is especially suitable for long-acting sealing requirements under harsh working conditions, and solves the problems that a traditional material is easy to age, poor in medium resistance and ineffective in dynamic sealing.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.

The invention belongs to the technical field of fiber spinning, and particularly discloses a preparation method of an antibacterial porous polyester DTY composite yarn. Comprising the following steps: (1) mixing 60-65 parts of waste polyester chips, 2-4 parts of an antibacterial agent, 6-8 parts of diphenyl silane glycol, 18-25 parts of nano-particle modified pearl powder, 5-9 parts of zinc acetate and 12-16 parts of polyethylene glycol, and carrying out melt extrusion, cooling, oiling and heat setting to obtain polyester POY (Polyester Pre-Oriented Yarn) filaments; and (2) carrying out heating stretching, false twisting and heat setting on the polyester POY filaments to obtain the antibacterial porous polyester DTY composite filaments. The antibacterial porous polyester DTY composite yarn prepared in the invention has good strength and wear resistance, so that the fiber is not easy to break in the use process, and the wear resistance and durability of the fiber are ensured.

The application provides a phenyl mixing rubber composition, which comprises a diphenyl vinyl silicone rubber, fumed silica and a hydroxyl silicone oil, and optionally further comprises one or both of diphenylsilanediol and diphenyldiethoxysilane. The phenyl mixing rubber composition has excellent low-temperature resistance and low-temperature recovery, TR10 is less than or equal to -100 DEG C, and a low-temperature compression coefficient is greater than or equal to 0.2. A sealing material prepared from the phenyl mixing rubber composition can solve the sealing problem in a severe low-temperature environment, and potential application fields of the sealing material include hydrogen energy storage tank sealing, aviation sealing, aerospace sealing and the like.

The application relates to the technical field of shielding silica gel processing, in particular to a shielding silica gel and a preparation method and application thereof, which are prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber, 10-20 parts of a plasticizer, 8-12 parts of fumed white carbon black, 2-4 parts of hydroxyl silicone oil, 120-200 parts of graphite, 20-30 parts of a modified dispersant, 5-10 parts of carbon nanotubes, 5-10 parts of carbon black, 0.2-0.5 parts of a vulcanizing agent, and 0-4 parts of a silane coupling agent; the plasticizer is composed of dodecamethylcyclohexasiloxane, epoxy silicone oil and alkoxy silicone oil; the modified dispersant is composed of polyoxyethylene hydrogenated castor oil, a diphenylsilanediol alcohol solution and hexamethylcyclotrisilazane; by adopting the above formula, the shielding silica gel still has low compression permanent deformation and high resilience under an ultrahigh filling amount, the shielding and conductive performances of the shielding silica gel are greatly improved, and the problems of limited shielding effect, increased compression permanent deformation and reduced resilience of the existing shielding silica gel are solved.

The invention discloses a high-toughness photo-thermal dual-curing anisotropic conductive film and a preparation method thereof, and relates to the technical field of conductive films. When the high-toughness photo-thermal dual-curing anisotropic conductive film is prepared, isophorone diisocyanate reacts with hydroxyl-terminated unsaturated polyether to generate a polyurethane prepolymer, and then the polyurethane prepolymer reacts with ethylenediamine to prepare modified polyurethane; the silver powder and vinyltriethoxysilane are subjected to a reaction, and modified silver powder is obtained; the preparation method comprises the following steps: enabling 3-(2, 3-epoxypropoxy) propyl trimethoxy silane and diphenyl silanediol to react to prepare organic silicon resin; mixing bisphenol A epoxy acrylic resin, modified polyurethane, organic silicon resin and modified silver powder to prepare conductive adhesive slurry; and coating a PET substrate with the conductive adhesive slurry, and curing to obtain the high-toughness photo-thermal dual-curing anisotropic conductive film. The prepared high-toughness photo-thermal dual-curing anisotropic conductive film has good conductive, self-repairing and mechanical properties.

The invention discloses a preparation method and application of a tackifier for an organic silicon heat-conducting pouring sealant, and relates to the technical field of tackifiers and pouring sealants applying the tackifiers. According to the scheme, diphenylsilanediol, trimethylolpropane monoallyl ether and other components are adopted as raw materials to prepare a tackifier, on the basis, vinyl silicone oil, the tackifier, hydrogen-containing silicone oil, alkynyl cyclohexanol and other components are mixed to prepare the organic silicon pouring sealant, aluminum oxide and aluminum hydroxide are selected to be compounded as filler, and the filler is selected to be mixed with the tackifier to prepare the organic silicon pouring sealant. According to the organic silicon pouring sealant, the heat-conducting property and the flame-retardant property of the organic silicon pouring sealant are improved, the filler is pretreated by adopting the branched bonding accelerant, the dispersing property and the system compatibility of the filler are improved, the finally prepared organic silicon pouring sealant is excellent in heat-conducting property and flame-retardant property, and the bonding property of the pouring sealant is greatly improved; the mechanical property is relatively excellent.