51 results about "Polymethylhydrosiloxane" patented technology

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 invention belongs to the technical field of printed circuit board materials, and discloses a heat-resistant high-toughness PCB and a preparation method thereof. The preparation method comprises the following steps: carrying out hydrosilylation polymerization reaction on epoxy-terminated polybutadiene and polymethylhydrosiloxane in the presence of a catalyst and an organic solvent to obtain a polysiloxane modified epoxy-terminated polybutadiene solution, then uniformly mixing the polysiloxane modified epoxy-terminated polybutadiene solution with epoxy resin, an amino silsesquioxane curing agent and an inorganic filler, and carrying out extrusion molding to obtain the epoxy-terminated polybutadiene modified epoxy resin. A modified epoxy resin glue solution is obtained; the obtained modified epoxy resin glue solution is adopted to conduct glue dipping treatment on a non-conductive base material, then single-face or double-face copper foil coating is conducted, hot pressing curing is conducted, and a copper-coated base plate is obtained; and then cutting, drilling, copper deposition, etching and surface treatment are carried out to obtain the heat-resistant high-toughness PCB. The epoxy resin is modified by polysiloxane modified epoxy-terminated polybutadiene, so that the heat resistance and toughness of the obtained copper-clad substrate and PCB can be remarkably improved, and relatively high adhesive property can be kept.

This invention relates to the field of silicone oil technology, and more particularly to a high-temperature resistant, high-film-forming release agent silicone oil, its preparation method, and its applications. The method is based on polymethylhydrosiloxane, and involves the introduction of phenyl groups, long-chain alkyl groups, and ≤3 mol% of 3,3,3-trifluoropropyl side chains through a multi-step hydrosilylation reaction. Finally, a high-performance release silicone oil is obtained through end-sealing and high-temperature release. The resulting silicone oil possesses excellent thermal stability, lubricity, and film-forming properties, making it suitable for efficient release applications in high-temperature composite materials, precision injection molding, and microelectronics processing, significantly superior to existing technologies.

The invention discloses ultralow-temperature-resistant polyurea foam as well as a preparation method and application thereof. The preparation method comprises the following steps: step 1, carrying out ring-opening reaction and condensation polymerization on amino double-terminated polydimethylsiloxane and ethylene carbonate to obtain polyurea containing a monoureido structure; and step 2, mixing the polyurea, the polymethylhydrosiloxane and the catalyst to obtain a premix, and foaming to obtain the polyurea foam. The foam is prepared by taking polyurea as a matrix and polymethylhydrosiloxane as a cross-linking agent and a foaming agent through one-step cross-linking foaming, wherein the polyurea is prepared from amino double-terminated polydimethylsiloxane and ethylene carbonate through a non-isocyanate route. The polyurea foam has an interval cross-linked structure, ureido groups are separated by flexible PDMS chain segments, and the material is endowed with chain segment motility and dynamic hydrogen bond recombination capability at extremely low temperature. The material has excellent impact resistance and elastic recovery capability, and is suitable for extreme environments such as aerospace, polar equipment and the like.

The application provides a high-transparency silicone rubber material and a preparation method thereof. The silicone rubber material comprises the following raw materials in parts by mass: 100 parts of methyl vinyl phenyl rubber, 10-30 parts of modified white carbon black, 3-5 parts of vinyl MQ silicone resin, 4-6 parts of polymethyl hydrogen siloxane, 1-1.5 parts of vinyl hydroxyl silicone oil and 0.001-0.003 parts of platinum catalyst. The modified white carbon black is obtained by grafting benzotriazole silane coupling agent and silicone oil onto the modified white carbon black. The benzotriazole silane coupling agent is obtained by urethane reaction of hydroxy benzotriazole compound and isocyanate silane coupling agent. The silicone oil grafting silane coupling agent is obtained by addition reaction of hydrogen-terminated polydimethylsiloxane and vinyl silane coupling agent. The silicone rubber material has good transparency and light stability.

The invention relates to the technical field of concrete admixtures, and discloses a polyether modified organic silicon defoaming agent for concrete and a preparation method thereof.According to the defoaming agent, PO-EO-PO triblock polyether starting from iso-tridecanol and phenyl modified polymethylhydrosiloxane are subjected to a hydrosilylation reaction to prepare polyether modified organic silicon; hydrophobic fumed silica is used as a core, MQ silicon resin is used as a shell to prepare the silicon paste of a core-shell structure, a polycarboxylic acid type dispersing agent is introduced to improve the compatibility with a water reducing agent, the defoaming time is 3-8 s, the foam inhibition time is 65-110 min, the gas content of concrete can be reduced by 74-89%, and the 28d compressive strength is improved by 24-40%.

The invention provides heat-aging-resistant silicone rubber and a preparation method and application thereof, and the silicone rubber is prepared from the following raw materials in parts by mass: 100 parts of methyl vinyl silicone rubber, 30 to 50 parts of filler, 0.3 to 0.8 part of tetraethoxysilane, 0.5 to 2 parts of vinyl silane coupling agent, 0.5 to 2 parts of styrene-trialkoxysilane substituted cyclotriphosphazene and 4 to 6 parts of polymethylhydrosiloxane. 1 to 1.5 parts of vinyl hydroxyl silicone oil; 0.001 to 0.003 part of platinum catalyst. Tetraethoxysilane, a vinyl silane coupling agent and styrene-trialkoxysilane substituted cyclotriphosphazene are synergistically introduced into a silicone rubber system, and a multistage silica-phosphorus-nitrogen composite bonding structure is constructed in situ between the filler surface and a silica main chain in the crosslinking and curing process. The interface stability and thermochemical inertness of the material can be remarkably improved, so that the thermal aging resistance of the silicon rubber in a high-temperature oxidation environment is improved.

The invention discloses a release film for foamed silica gel and a preparation method of the release film, and belongs to the technical field of release film preparation. The release film for the foamed silica gel comprises a base material layer and a release coating, the release coating comprises the following raw materials: polydimethylsiloxane resin, polytetrafluoroethylene resin, an organic solvent, a fluorine-containing solvent, a cross-linking agent, an anchoring agent, a catalyst, a stripping agent, an inhibitor and an anti-sticking agent; the cross-linking agent is prepared from the following raw materials: polymethylhydrosiloxane and polytetrafluoroethylene resin. The invention further discloses a preparation method of the release film for the foamed silica gel. The invention can solve the problems of difficult stripping and quality damage of the foamed silica gel caused by adhesion due to interpenetration of the silicon release film and the foamed silica gel, and has the advantages of simple formula and easiness in preparation and operation.

This invention provides a zero-grid oil leakage thermal pad and its preparation method. Without changing the type and ratio of thermally conductive filler, the types of vinyl-terminated polydimethylsiloxane and polymethylhydrosiloxane, or the hardness of the thermal pad, this invention achieves a reduction in oil leakage value from the typical range of 52-23.6 grids to zero grids by adjusting the combination of vinyl-terminated polydimethylsiloxane and polymethylhydrosiloxane. Furthermore, as an auxiliary material, this invention further verifies the influence of the thermal pad's hardness and the overall proportion of the silicone oil system on oil leakage.

The invention belongs to the technical field of electrolyte and solid-state battery materials, and particularly relates to fluorine-containing polyether electrolyte, a high-energy-density solid-state metal lithium battery and a preparation method of the high-energy-density solid-state metal lithium battery. The preparation method comprises the following steps: firstly, preparing a product A by taking polymethylhydrosiloxane and polyethylene glycol diacrylate as raw materials, and then carrying out hydrosilylation reaction by taking the product A and a fluorine-containing monomer as raw materials to obtain the fluorine-containing polyether electrolyte, so that the fluorine-containing polyether electrolyte is ensured to have good heat resistance; the preparation method comprises the following steps: preparing a lithium-manganese-based positive electrode material, mixing fluorine-containing polyether electrolyte and triethylene glycol divinyl ether to form a precursor solution, soaking the lithium-manganese-based positive electrode material in the precursor solution for in-situ assembly treatment, and compounding with a polypropylene diaphragm and a lithium negative electrode material to obtain the high-energy-density solid-state metal lithium battery which has good electrochemical performance.

This invention belongs to the field of coating technology, specifically relating to a linear high-polysilane-reinforced wear-resistant antireflective coating and its preparation method. Using tetraethyl orthosilicate and methyltriethoxysilane / methyltrimethoxysilane as co-precursors, an alkaline network silica sol is synthesized under alkaline conditions via a sol-gel method. Using poly(methylhydrosiloxane) as the silicon source, a linear high-polysiloxane sol is synthesized under the action of a catalyst. The two silica sols are then mixed, aged, and ammonia-removed to obtain a neutral mixed sol. A double-sided antireflective coating is then deposited on a borosilicate glass surface using an dip-coating method. Finally, the coating is calcined in a muffle furnace at 550°C for 2 hours to obtain the wear-resistant antireflective coating. The prepared antireflective coating exhibits high transmittance and good wear resistance. The preparation process avoids the use of acid, preventing corrosion of production equipment and environmental pollution, making the production operation green and environmentally friendly.

The invention discloses a heat-resistant anti-adhesion release film special for a multilayer ceramic capacitor and a preparation method of the release film, and belongs to the field of electronic materials. The preparation method comprises the following steps: selecting a modified PET (Polyethylene Terephthalate) film containing nano aluminum oxide particles as a base material layer; the preparation method comprises the following steps: dissolving fluorine-containing silane grafted polyimide and a hyperbranched polyester polysiloxane block copolymer in a mixed organic solvent to prepare a functional coating solution, and forming a functional coating on a base material through coating and stepped heating curing; and coating the functional coating with a release layer coating liquid prepared from vinyl-terminated polydimethylsiloxane, polymethylhydrosiloxane, a platinum catalyst, an acrylate silane coupling agent, vinyl MQ silicon resin and the like, curing, and rolling to obtain the release film. The release film prepared by the method has excellent heat resistance, adhesion resistance and dimensional stability, is particularly suitable for a high-temperature process link in the manufacturing process of a multilayer ceramic capacitor, can effectively prevent film adhesion, and ensures the production quality and efficiency of the capacitor.

The invention discloses a high-strength sealing silica gel material for an automobile seat massage system and a preparation method of the high-strength sealing silica gel material, and belongs to the technical field of sealing materials and automobile parts. The invention provides a high-strength sealing silica gel material. The high-strength sealing silica gel material is prepared from the following raw materials: methyl vinyl silicone rubber, phenyl fluoride / silicone rubber, fumed silica, hydroxyl vinyl silicone oil, tetramethyl tetravinyl cyclotetrasiloxane, polymethylhydrosiloxane, a platinum catalyst and vinyl trimethoxy silane. By adjusting a base rubber system, the strength of the prepared sealing silica gel material is remarkably improved under the condition that the hardness is not improved and the dosage of nano reinforcing filler such as fumed silica is not increased, meanwhile, excellent elasticity and processing performance are kept, and the sealing silica gel material can be suitable for an automobile riding massage system, effectively absorbs pulse stress and is good in stability.

The invention relates to a preparation method of polyether modified silicone oil, which belongs to the technical field of polyether modified silicone oil, and comprises the following steps: carrying out reaction on octamethylcyclotetrasiloxane, fluorocyclosiloxane and polymethylhydrosiloxane to obtain low-hydrogen silicone oil; reacting low-hydrogen silicone oil with allyl polyether, silane grafted nanoparticles and glycidyl methacrylate to obtain a compound; and combining the compound with dialkyl dithiophosphate to obtain the polyether modified silicone oil. According to the technical scheme, octamethylcyclotetrasiloxane, fluorocyclosiloxane and polymethylhydrosiloxane are combined, so that the surface tension of polyether modified silicone oil can be remarkably reduced, and low-hydrogen silicone oil is combined with allyl polyether, silane grafted nanoparticles and glycidyl methacrylate, so that the surface tension of the polyether modified silicone oil is remarkably reduced. The thermal stability and wettability of the polyether modified silicone oil are improved, the defoaming performance and storage stability of the polyether modified silicone oil are further improved through the dialkyl dithiophosphate, and the comprehensive performance of the polyether modified silicone oil is overall improved.

The invention particularly relates to a waterproof heat-conducting bonding pouring sealant and a preparation method thereof. The waterproof heat-conducting bonding pouring sealant comprises a component A and a component B, wherein the component A comprises vinyl polydimethylsiloxane, polymethylhydrosiloxane, a heat-conducting filler, color paste, an inhibitor and a tackifier; and the component B comprises vinyl polydimethylsiloxane, a heat-conducting filler and a catalyst. Vinyl phenyl siloxane is selected as a powder treating agent, so that the compatibility of powder and a system is improved, and a benzene ring can be introduced into molecules through a hydrosilylation reaction; by autonomously synthesizing the tackifier, adopting polymethylhydrosiloxane with higher hydrogen content as a reaction raw material, introducing an epoxy group and an alkoxy group into a molecular chain segment through hydrosilylation reaction, increasing a plurality of reaction active sites, and quickly reacting with a hydroxyl group on the surface of a base material to achieve a quick bonding effect after being in contact with the bonding base material; and water vapor is effectively prevented from entering the electronic component from a bonding interface.

This invention discloses a modified polymethylhydrosiloxane electrolyte additive, its preparation method, electrolyte, and applications, belonging to the field of lithium metal batteries. The additive of this invention has a siloxane main chain, with at least one of carbonate and fluoroalkane substituents and an ether substituent introduced into the side chain. This allows the modified polymethylhydrosiloxane, when used as an electrolyte additive, to effectively reduce side reactions between lithium metal and the electrolyte, inhibit lithium dendrite growth, and maintain the crystal structure of the high-nickel cathode, reducing its disintegration and nickel ion deposition. When compounded with carbonate organic solvents as an electrolyte and applied to lithium metal batteries, it effectively improves the cycle stability and coulombic efficiency of lithium metal batteries.

The invention discloses a modified polymethylhydrosiloxane electrolyte additive, a preparation method thereof, an electrolyte and application, and belongs to the field of lithium metal batteries. According to the additive disclosed by the invention, siloxane is taken as a main chain, and at least one of a carbonic ester substituent group and a fluoroalkane substituent group and an ether substituent group are introduced into a side chain, so that when the modified polymethylhydrosiloxane is taken as the electrolyte additive, the side reaction between lithium metal and an electrolyte is effectively reduced, and the growth of lithium dendrites is inhibited; and the crystal structure of the high-nickel positive electrode can be maintained, and disintegration of the high-nickel positive electrode and precipitation of nickel ions are reduced. When the compound is compounded with a carbonic ester organic solvent to serve as an electrolyte and applied to a lithium metal battery, the cycling stability and coulombic efficiency of the lithium metal battery are effectively improved.

The present application belongs to the field of one-dimensional size nanometer material preparation and application, and particularly relates to a preparation method of a size-controllable hollow silica nanometer tube coating and application of the coating in a super-hydrophobic self-cleaning anti-reflection coating. The coating is prepared by high-temperature treatment of poly(methyl hydrogen siloxane) in an alkaline environment, and the specific preparation method is as follows: preparing a n-heptane or cyclohexane solution of poly(methyl hydrogen siloxane); placing the n-heptane or cyclohexane solution of poly(methyl hydrogen siloxane), ammonia water, ultrapure water and a substrate in a reaction kettle; adjusting the volume ratio of the ammonia water to the ultrapure water and the reaction temperature to prepare hollow nanometer tube coatings with different sizes. The average light transmittance of the coating prepared by the present application can reach 92.44% in the range of 400-800 nm, which is 2.4% higher than that of the substrate, the water contact angle is 156.1°, and the rolling angle is 0.75°. The silica nanometer tube coating has excellent self-cleaning properties.

The invention discloses a preparation method of alkoxy branched silicone oil, which comprises the following steps: S1, adding a composite catalyst D001 macroporous cation exchange resin and p-toluenesulfonic acid into tetramethylcyclotetrasiloxane, stirring to react for more than 8 hours, and carrying out reduced pressure distillation and filtration to obtain polymethylhydrosiloxane; s2, placing polymethylhydrosiloxane in a closed reactor, adding monohydric alcohol, then adding a K10 montmorillonite catalyst loaded with nickel chloride, stirring and reacting for more than 12 hours under the protection of inert gas, and pumping out gas in the closed reactor to obtain reaction liquid; and S3, carrying out reduced pressure distillation on the reaction liquid to remove residual alcohol, and filtering to obtain the alkoxy branched silicone oil. The synthesis yield is relatively high, the purity of the prepared alkoxy branched silicone oil is relatively high, the alkoxy side chain grafting rate is relatively high, and the cost is relatively low.

The application belongs to the technical field of silicone adjuvants, and particularly relates to an antistatic agent for spinning oil and a preparation method thereof, the preparation method comprising the following steps: (1) preparation of polymethylhydrogen siloxane; (2) preparation of long-chain alkane and epoxy co-modified silicone oil; (3) preparation of amino-modified silicone oil; (4) preparation of an antistatic agent mixture for spinning oil; and (5) distillation to remove impurities. The antistatic agent for spinning oil is a very efficient and multifunctional special adjuvant, which ingeniously combines the structural characteristics of sulfobetaine amphoteric ions and the excellent performance of organic silicon together to create a synergistic effect. Through molecular design, several key performances are perfectly integrated, not only solving the core problems of static electricity, friction and hand feeling, but also bringing comprehensive benefits of formula simplification, performance stability and product high-end, and the production smoothness and product quality are improved, so that the antistatic agent for spinning oil becomes a very economical and efficient choice.

The invention relates to the technical field of medical dressings, in particular to a scar repair silicone gel and a preparation method thereof. The scar repairing silicone gel is prepared from the following components in percentage by mass: 10 to 20 percent of decamethylcyclopentasiloxane, 6 to 10 percent of organic silicon polymer, 2 to 7 percent of simethicone, 3 to 5 percent of functional additive, 0.3 to 0.6 percent of hydroxyethyl cellulose, 1 to 3 percent of glyceryl monostearate, 3 to 8 percent of glyceryl stearate, 1.5 to 2 percent of fumaric acid, 0.2 to 0.6 percent of ethylhexylglycerin and the balance of water. The linear polymethylhydrosiloxane is crosslinked to form a compact elastic three-dimensional network, so that the silicone film has excellent air permeability and mechanical properties; the functional auxiliary agent realizes dual repair of physical closed moisturizing and biological activity promotion, and is beneficial to repair of scars; the silicone gel prepared by the invention not only can efficiently repair scars, but also has excellent antibacterial property, mechanical property and biocompatibility, and the whole system does not contain irritant components and is suitable for sensitive skin.

The invention provides an organosilicon gel and a preparation method and application thereof, and belongs to the technical field of organosilicon gels, the organosilicon gel comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 10 to 50 parts of vinyl terminated polydimethylsiloxane, 1 to 10 parts of polymethylhydrosiloxane, 0.1 to 1 part of a tackifier a, 0.1 to 1 part of a tackifier b and 0.001 to 1 part of a crosslinking inhibitor; the component B is prepared from the following raw materials in parts by weight: 10 to 50 parts of vinyl terminated polydimethylsiloxane and 0.0001 to 1 part of a reaction catalyst. According to the invention, through the synergistic interaction of the two-component curing system and the tackifier, the integration of multiple functions of heat-resistant bonding is realized, and a new solution is provided for the protection of electronic components.

The invention provides high-elongation silicone rubber and a preparation method thereof.The high-elongation silicone rubber is prepared from, by mass, 100 parts of vinyl-terminated dimethyl siloxane, 5-15 parts of modified filler, 2-10 parts of vinyl MQ resin, 3-8 parts of polymethylhydrosiloxane, 0.001-0.03 part of methyl butynol and 0.001-0.003 part of platinum catalyst; the modified filler is prepared from a silane modified microfibrillated cellulose-chitosan cross-linked compound, and a polyvinyl alcohol-beta-cyclodextrin based compound loaded in the silane modified microfibrillated cellulose-chitosan cross-linked compound. The silicone rubber prepared by the invention has excellent elongation, is suitable for the fields of flexible elements, elastic packaging and the like with relatively high requirements on flexibility and tensile properties, and has a wide application prospect.

The invention relates to the technical field of processing of organic high-molecular compounds using inorganic substances as ingredients. The invention discloses an oil-proof heat-resistant sealing material as well as a preparation method and application thereof. The material comprises methyl vinyl silicone rubber, hydroxyl silicone oil, fumed silica, a vulcanizing agent, an accelerant, zirconium-doped polymethylhydrosiloxane, cobaltosic oxide or cerium-doped cobaltosic oxide. The zirconium-doped polymethylhydrosiloxane is added into the formula of the sealing material, and zirconium is doped in a molecular chain of siloxane, so that the high-temperature resistance of the silicone rubber is improved; and the addition of cobaltosic oxide or cerium-doped cobaltosic oxide can inhibit the occurrence of oxidation crosslinking and main chain cyclization degradation of silicone rubber molecule side groups, thereby further improving the heat resistance of the silicone rubber. In addition, due to the addition of cobaltosic oxide or cerium-doped cobaltosic oxide, the oil resistance of the silicone rubber is also improved. Meanwhile, the addition of a proper mass of cobaltosic oxide or cerium-doped cobaltosic oxide does not affect the mechanical properties of the silicone rubber.

This application relates to the field of silicone oil technology, specifically disclosing a washable hydrophilic silicone oil and its preparation method. The method for preparing a washable hydrophilic silicone oil includes: mixing polymethylhydrosiloxane, epoxy-terminated allyl polyoxyethylene polyoxypropylene ether, allyl polyoxyethylene polyoxypropylene ether, and a platinum catalyst, and then stirring and reacting at 90–120°C for 2–4 hours to obtain the first-step reaction product; adding an aminohydrosilane to the first-step reaction product, and continuing to stir and react for 8–10 hours to obtain the washable hydrophilic silicone oil. The preparation method of this application, by controlling the first and second reaction steps, constructs a resin-modified silicone oil system with a stable three-dimensional network structure, resulting in a washable hydrophilic silicone oil with excellent hydrophilicity and wash resistance, effectively improving the problems of poor wash resistance and insufficient hydrophilicity of modified silicone oils.

The application provides a deep anti-seepage reinforcing material and a preparation method and application thereof, and belongs to the technical field of composite materials. Modified nano silicon dioxide prepared by hydrolysis modification of polymethyl hydrogen siloxane is mixed with a premixing material, the premixing material is obtained by pre-polymerization reaction of hyperbranched flame-retardant polyester generated by polyphosphoric melamine / tripolymer graphite composite reaction, polyether polyol and isocyanate, and then pouring, curing and obtaining the deep anti-seepage reinforcing material. The application prepares a polyurethane-based deep anti-seepage reinforcing material, which has strong cementation performance, good toughness, good durability, excellent mechanical properties, good flame retardance and good heat conduction performance.

The present application relates to a kind of concrete shrinkage reducing agent and its preparation method, belong to concrete admixture technical field.The concrete shrinkage reducing agent is composed of shrinkage component and auxiliary component according to mass ratio (55-75) :(25-45) ;Wherein, shrinkage component is with polymethyl hydrogen siloxane and modified polyether as raw material, is prepared by polyether modified silicone at 75-95 ℃ under reaction 4h-8h, auxiliary component is ether and / or polyhydric alcohol;The molar ratio of Si-H in the polymethyl hydrogen siloxane and C=C in the modified polyether is (0.8-1.2) :(1.1-1.5) ;The shrinkage reducing agent reduces the surface tension in cement concrete pore solution by the synergistic unified action of shrinkage component and auxiliary component, reduces the driving force of shrinkage stress sending, can still achieve excellent shrinkage effect under the condition of low dosage in concrete;The preparation method of the concrete shrinkage reducing agent process step is simple, and it is convenient for batch production.

Forming a crosslinked polymer includes combining one or more amino acids, water, or a combination thereof and one or more hydride-functionalized silicon-containing polymers in the presence of a catalyst to yield a mixture, and reacting the one or more amino acids, water, or combination thereof with the one or more hydride-functionalized silicon-containing polymers to yield a crosslinked polymer comprising Si-O and Si-N bonds.

This application provides a high elongation silicone rubber and its preparation method. The high elongation silicone rubber comprises the following raw materials in parts by weight: 100 parts of terminal vinyldimethylsiloxane, 5-15 parts of modified filler, 2-10 parts of vinyl MQ resin, 3-8 parts of polymethylhydrosiloxane, 0.001-0.03 parts of methylbutyninol, and 0.001-0.003 parts of platinum catalyst. The modified filler includes a silane-modified microfibrillated cellulose-chitosan crosslinked composite and a polyvinyl alcohol-β-cyclodextrin complex supported in the silane-modified microfibrillated cellulose-chitosan crosslinked composite. The silicone rubber prepared by this application exhibits excellent elongation and is suitable for applications requiring high flexibility and tensile properties, such as flexible components and elastic packaging, showing broad application prospects.

The present invention is a compound of Formula 1: wherein each n is 1, 2 or 3. The compounds of the present invention are useful as adhesion promoters in thermally conductive compositions. The invention also relates to a process for the preparation of the compounds of Formula 1.