3983 results about "Silicone resin" patented technology

A method of manufacturing electrical tracks in a region of an intravascular blood pump is provided. The method can include providing an intravascular blood pump with a flow cannula including a spiral structure, a sensor and an electrical connection region, applying a conductor structure to a coatable material of the flow cannula, electrically connecting a first portion of the conductor track structure to the sensor and a second portion of the conductor track structure to the electrical connection region and closing the spiral structure using a flexible material where the flexible material can be silicone or polyurethane.

The invention discloses an environment-friendly organic silicon intumescent fireproof coating for a transformer substation or a converter station as well as a preparation method and application of the environment-friendly organic silicon intumescent fireproof coating. The coating comprises the following raw materials in parts by mass: 30-60 parts of organic silicon resin, 30-45 parts of an intumescent flame retardant, 5-10 parts of modified glass powder, 2-20 parts of an inorganic filler, 2-10 parts of an auxiliary agent and 5-25 parts of a curing agent. The intumescent flame retardant takes a phosphazene compound as a gas source and an acid source; the phosphazene compound is prepared by carrying out nucleophilic substitution reaction on phosphonitrilic chloride trimer and melamine or dicyandiamide; the modified glass powder is prepared by mixing a plurality of glass powder with the melting point of 350-700 DEG C and then modifying by adopting a silane coupling agent. According to the invention, the high-temperature resistance of the organic silicon resin coating is improved through formula design, so that the service life of the steel in a high-temperature scene is prolonged, the performance reliability of fire-fighting equipment of a transformer substation or a converter station is improved, and the purpose of high-temperature resistance is achieved.

The invention provides a cement paste system with high strength, elasticity and toughness and application of the cement paste system in deep coal bed gas horizontal well cementation, and the cement paste system is prepared from the following raw materials in parts by mass: 40-70 parts of oil well cement, 13-40 parts of fly ash, 15-45 parts of slag, 5.0-20.0 parts of water-based organic silicon resin, 0.1-0.5 part of ultra-high performance polyethylene fiber, 3.0-8.0 parts of calcium oxide and 2.0-5.0 parts of calcium sulfate whisker. 1.0-8.0 parts of nano silicon dioxide, 1.0-6.0 parts of a fluid loss agent, 0.5-2.0 parts of a drag reducer, 0.2-1 part of a defoaming agent and 50-80 parts of water. The cement paste system disclosed by the invention has the characteristics of remarkable low-temperature quick setting and high early strength, also has the advantages of low water loss, controllable thickening, simple preparation operation and the like, and set cement is high in compressive strength, high in breaking strength and very excellent in elastic and tough mechanical properties.

The invention relates to the technical field of composite materials, in particular to high-thermal-conductivity organic silicon resin and a preparation process thereof. The invention relates to a preparation process of organic silicon resin with high thermal conductivity. The preparation process comprises the following steps: adding a nano filler with high thermal conductivity into a silane coupling agent for surface modification; adding the modified filler into an organic silicon resin matrix, mixing, adding a cross-linking agent, and carrying out shearing treatment; pouring the mixed solution into a mold, and treating in a strong electromagnetic field; placing the mold in a vacuum filling device to remove bubbles; and putting the mixture into a drying oven for crosslinking and curing to obtain the high-thermal-conductivity organic silicon resin. Through the high-speed shearing effect, the filler is arranged in the matrix in the shearing direction to form a continuous heat conduction path, the filler is regularly guided through a strong electromagnetic field to form a continuous heat conduction channel, bubbles in the material are removed under the vacuum condition, it is ensured that organic silicon resin is filled into pores of a filler framework, and the heat conduction performance of the filler is improved. The uniformity and integrity of the material are improved, and the interface thermal resistance is reduced, so that the heat-conducting property is improved.

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

The invention relates to the technical field of lubricating coatings, in particular to a low-temperature curing lubricating coating for a fan bearing and a preparation method of the low-temperature curing lubricating coating. The lubricating coating is prepared from the following components in parts by weight: 55 to 65 parts of mixed solvent, 10 to 15 parts of composite bonding resin, 10 to 15 parts of modified lubricating filler, 8 to 12 parts of wear-resistant filler, 0.5 to 3 parts of dispersing agent, 0.5 to 1 part of micronized dicyandiamide, 0.5 to 2 parts of flatting agent, 0.5 to 2 parts of defoaming agent and 0.5 to 1 part of anti-settling agent, wherein the composite bonding resin is prepared from the following components in parts by weight: 10 to 20 parts of organic silicon resin, 15 to 30 parts of novolac epoxy resin, 15 to 30 parts of urethane acrylate and 35 to 45 parts of polyhydroxy polyether resin; the modified lubricating filler is obtained by modifying mixed powder containing molybdenum disulfide and polytetrafluoroethylene. The adhesive force, the wear resistance and the lubricating property of the lubricating coating can be improved, and the curing temperature can be reduced.

The invention discloses a PVC / CPE modified material and a preparation method thereof, and belongs to the technical field of high polymer materials. The PVC / CPE modified material comprises the following raw materials in parts by weight: 80-100 parts of PVC, 20-40 parts of CPE, 3-30 parts of a plasticizer, 2-4 parts of a modified flame-retardant anti-aging agent, 2-3 parts of a stabilizer and 3-5 parts of a lubricant. The preparation method comprises the following steps: preparing an intermediate 1 from organic silicon resin and 4-((4-(hydroxymethyl) phenyl) (phenyl) amino) benzaldehyde, preparing an intermediate 2 from the intermediate 1 and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, preparing an intermediate 3 from cyanuric chloride and N-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine, preparing an intermediate 4 from the intermediate 3, and preparing an intermediate 4 from the intermediate 4. And finally preparing the modified flame-retardant anti-aging agent from the intermediate 2 and the intermediate 3. The PVC / CPE modified material prepared by the invention has excellent anti-aging performance and flame retardant performance.

The invention relates to the technical field of coatings, and discloses a modified hexagonal boron nitride and organic silicon double-component doped high-flame-retardant epoxy resin powder coating as well as a preparation method and application thereof. Comprising the following raw materials in parts by weight: 25-50 parts of modified hexagonal boron nitride, 90-110 parts of organic silicon resin, 120-150 parts of epoxy resin, 5-8 parts of dicyandiamide, 100-120 parts of silica powder, 8-12 parts of other auxiliaries and 80-100 parts of filler. The flame-retardant epoxy resin powder coating is prepared by uniformly mixing the components, melting, extruding a sheet material, grinding and sieving. The flame-retardant and fireproof performance of the epoxy resin powder coating is greatly improved in a modified hexagonal boron nitride and organic silicon double-component doping mode.

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

Modified resin and SGP laminated resin are mixed, extruded and subjected to film casting to prepare a laminated sheet, the laminated sheet is placed between two pieces of glass to be pressed at a high temperature, when the modified resin and the SGP laminated resin are molten, double bonds on the modified resin can be grafted with molecular chains on the SGP laminated resin, and the SGP laminated glass is formed. A main body of a molecular chain of the modified resin is a polyurethane structure containing an organic silicon chain segment, the heat insulation effect of the SGP laminated resin can be improved, and the modified filler contains a multi-cavity structure, so that the heat insulation effect is further improved; and a titanium-containing organic silicon resin chain segment in the modified resin, tin dioxide on the surface of the modified filler and a benzotriazole structure in the modified resin can increase the absorption of ultraviolet rays by the laminated film and reduce the irradiation of the ultraviolet rays.

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

The invention discloses a method for preparing low-viscosity vinyl fluorine-containing hyperbranched organic silicon resin, and belongs to the technical field of organic polymer materials. The low-viscosity vinyl fluorine-containing hyperbranched organic silicon resin is prepared by taking a vinyl-containing siloxane monomer, an alkyl-containing siloxane monomer and a fluorine-containing siloxane monomer as raw materials through hydrolysis nucleation, condensation growth, end capping and purification treatment. Wherein the content of vinyl is not lower than 3 wt%, the content of fluorine is not lower than 15 wt%, and the viscosity is not higher than 1000 mPa.s. The vinyl fluorine-containing hyperbranched organic silicon resin disclosed by the invention is used as a material with excellent characteristics of both vinyl organic silicon resin and a fluorine-containing polymer, the existence of vinyl can be suitable for various reaction conditions, the existence of a fluorine-containing group enables the vinyl fluorine-containing hyperbranched organic silicon resin to have excellent hydrophobic and oleophobic properties, and meanwhile, the fluorine-containing polymer material is relatively small in friction coefficient, so that the vinyl fluorine-containing hyperbranched organic silicon resin can be applied to various reaction conditions. The method has great application potential in the fields of oil-resistant sealing, anti-corrosion coatings, electronic materials, medical apparatuses and instruments and the like.

The invention discloses a multi-layer protection cable resistant to an extreme environment, and belongs to the technical field of cables. The cable is of a seven-layer composite structure design and sequentially comprises a conductor, an insulating layer, a shielding layer, a buffer layer, a waterproof layer, a heat insulation layer and a protective outer layer from inside to outside, and the conductor is made of high-purity oxygen-free copper; the insulating layer is made of a polyimide material and has high temperature resistance, low temperature resistance and excellent insulating property; the shielding layer is composed of a tinned copper wire woven mesh and a high-permeability permalloy foil, and electromagnetic interference is effectively shielded; the buffer layer is made of an elastic rubber material to relieve mechanical stress; the waterproof layer adopts a nanoscale fluorosilicone resin coating and has excellent waterproof performance; the heat insulation layer is made of ceramic fibers and aerogel, and efficient heat insulation is provided; and the protective outer layer is made of a high-strength and corrosion-resistant polyether-ether-ketone (PEEK) material. The cable has excellent high temperature resistance, low temperature resistance, corrosion resistance and electromagnetic interference resistance, is suitable for extreme environments, and ensures stable transmission of electric power and signals under extreme conditions.

The invention relates to the field of heat transfer films, in particular to a single-sided water-based environment-friendly pyrograph film and a preparation process thereof. The water-based release film sequentially comprises an ink absorption layer, a water-based release layer and a base layer from the upper surface to the lower surface, the water-based release layer is obtained by curing a water-based release agent, and the water-based release agent is prepared from the following raw materials in percentage by weight: modified water-based acrylate, deionized water, a cross-linking agent, a defoaming agent and modified polyurethane; the modified water-based acrylate is prepared from alkenyl siloxane, hydrogen-containing polysiloxane, phenyl hydroxyl reticular silicon resin, a bonding aid, a surfactant and water; according to the scheme, the obtained water-based release layer is stably adhered to the base layer, the ink absorption layer can be rapidly separated from the water-based release layer during heat transfer printing, and the transfer printing efficiency and the transfer printing quality are improved.

The invention relates to the technical field of special coating materials, in particular to a high-temperature-resistant heavy-duty anticorrosive fluorosilicone polymer coating as well as a preparation method and application thereof. The high-temperature-resistant heavy-duty anticorrosive fluorosilicone polymer coating is prepared from the following components in parts by mass: 80-100 parts of fluorosilicone resin, 10-15 parts of a nano anticorrosive material, 5-15 parts of wear-resistant powder, 5-10 parts of an anti-rust pigment, 1-2 parts of a siloxane dispersant, 1-2 parts of a polysiloxane defoaming agent, 1-2 parts of an organic silicon leveling agent, 1-3 parts of a polyamide wax anti-settling aid and 25-35 parts of an amino curing agent. 2 to 5 parts of an amino silane coupling agent; and the fluorosilicone resin has the molecular weight of 8000-12000 and contains silicon oxygen bonds. The high-temperature-resistant heavy-duty anti-corrosion fluorosilicone polymer coating prepared by the invention improves the adhesive force to a substrate, can be cured at normal temperature, and has excellent high-temperature anti-corrosion performance.

The invention discloses a modified organic silicon resin, a high-temperature-resistant coating and a preparation method thereof, the modified organic silicon resin is prepared by hydrolyzing at least two different siloxane monomers and then carrying out condensation reaction on the hydrolyzed siloxane monomers and at least one boric acid monomer, and the main chain of the organic silicon resin is of a heteroatom doped structure formed by a Si-O bond, a B-O bond and a B-O-Si bond; at 200-250 DEG C, the modified organic-inorganic high-temperature-resistant composite material is subjected to a self-crosslinking reaction. The high-temperature-resistant coating overcomes the defect that the high-temperature-resistant coating in the prior art cannot meet the high-temperature test, and avoids the defects that organic and inorganic high-temperature-resistant coatings crack, the impact resistance and hardness are not matched, the water resistance is poor, and the wear resistance is poor.

The invention relates to the technical field of power cables, in particular to a heat-aging-resistant crosslinked polyethylene insulated power cable and a preparation method thereof. The cable comprises conductor wire cores, an insulating layer, a filling layer, a composite function layer, a steel tape armoring layer and a sheath layer from inside to outside. The insulating layer is composed of semi-conductive crosslinked polyethylene, silicone resin, nano montmorillonite and an HALS light stabilizer; the filling layer is composed of plasticized glass fabric, polyphenylene sulfide and rare earth oxide; the composite functional layer sequentially comprises a heat-conducting inner layer, a flame-retardant middle layer and an anti-UV outer layer from inside to outside; the sheath layer is composed of polyolefin, white carbon black, ceramic silicone rubber, a flame retardant, polyethylene wax and an initiator. According to the cable, cross-linked polyethylene and silicone resin are preferably selected as heat-resistant materials, heat conduction / flame retardance / UV resistance / armored multi-layer synergistic protection is achieved, the mechanical barrier performance is improved, meanwhile, damage of thermal stress to internal materials is reduced, comprehensive improvement of thermal aging resistance is achieved, and the cable is suitable for high-temperature, high-humidity and frequent thermal cycle harsh environments.

Lighting device for a motor vehicle, comprising at least one light source, a planar light guide (2) with an entry surface (3) and at least one exit surface (4, 5), wherein the entry surface (3) is in particular designed as an end face of the light guide (2), at least one optical component (6, 7, 9, 10) designed as an optical disk or optical film, wherein the lighting device is configured such that the light generated by the at least one light source (1) enters the light guide (2) at least partially through the entry surface (3), that the light entering through the entry surface (3) exits at least partially from the at least one exit surface (4, 5), and that the light exiting from the at least one exit surface (4, 5) of the light guide (4, 5) passes at least partially through the at least one optical component (6, 7, 10) and / or is reflected by the at least one optical component (9).a housing (8) on or in which the planar light guide (2) and the at least one optical component (6, 7, 9, 10) are arranged, wherein the planar light guide (2) and / or the at least one optical component (6, 7, 9, 10) are made of silicone or wherein the planar light guide (2) and / or the at least one optical component (6, 7, 9, 10) comprise silicone.

The invention discloses a preparation method of an antibacterial self-repairing organic silicon coating, and belongs to the technical field of organic silicon resin preparation, octamethylcyclotetrasiloxane, siloxane and / or amino silane and a catalyst are sequentially added into a four-neck flask filled with nitrogen, after stirring and heating, acid treatment is performed to obtain amino polysiloxane with a quaternary ammonium salt modified side chain, and then the amino polysiloxane with the quaternary ammonium salt modified side chain is added into the four-neck flask to obtain the antibacterial self-repairing organic silicon coating. Adding carbon tetrachloride and methyl acrylate, adding sodium hydroxide after the reaction is finished, heating and refluxing, filtering to obtain a liquid product, carrying out rotary evaporation to obtain amino acid modified polysiloxane, uniformly stirring the amino acid modified polysiloxane and a solvent to obtain a component A, uniformly stirring an antibacterial cross-linking agent and a solvent to obtain a component B, stirring the component A and the component B, coating, and drying to obtain a finished product. And curing to obtain the amino acid modified polysiloxane for self-repairing the antibacterial coating. Through synthesis of amino acid modified polysiloxane, reversible crosslinking of polysiloxane is realized through chelation of amino and carboxyl on metal ions, the reversible crosslinking can be repeated for multiple times, and the metal ions have an antibacterial effect, so that the service life of the coating is prolonged.

The invention relates to the technical field of high polymer material chemistry, and discloses a high and low temperature resistant anti-yellowing optical adhesive and a preparation process thereof, the high and low temperature resistant anti-yellowing optical adhesive comprises the following components by weight: 40-60% of modified organic silicon resin, 20-30% of urethane acrylate, 10-15% of alicyclic epoxy resin, 0.5-5% of a nano inorganic filler, 0.8-2.5% of an anti-yellowing composite reagent, and the balance of a solvent. The coating is prepared from the following components in percentage by weight: 0.5 to 1.5 percent of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 0.1 to 0.3 percent of fluorine modified polyacrylate flatting agent and 0.3 to 1.0 percent of chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst. The preparation method comprises the following steps: mixing alpha, omega-dihydroxy polydimethylsiloxane and phenyltrimethoxysilane according to a mass ratio of 8: 2-7: 3, adding 0.3-1.0% of a chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst, and raising the temperature by stages under the protection of nitrogen, so that the glass transition temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C, and the temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C below zero. And the long-term service requirement of the optical device in an extreme temperature environment is met.

The invention provides a UV-thermal dual-curing adhesive and a preparation method and application thereof, and belongs to the technical field of adhesives, and the UV-thermal dual-curing adhesive is prepared from the following raw materials in parts by weight: 10-40 parts of silicon-free epoxy resin; 5 to 35 parts of epoxy silicone resin; 5-40 parts of a reactive diluent; 0.5 to 5 parts of a cationic photoinitiator; 0.1 to 3 parts of a cationic thermal initiator; 0.5 to 10 parts of a thixotropic agent; 0.1 to 2 parts of an antioxidant; and 30-60 parts of a filler. According to the UV-thermal dual-curing adhesive provided by the invention, the epoxy silicon resin is introduced on the basis that the system contains the silicon-free epoxy resin, and the two resins act together, so that the UV curing strength and the thermal curing strength can be adjusted, and the prepared UV-thermal dual-curing adhesive has high cohesiveness and high weather resistance at the same time.

The invention relates to the technical field of titanium dioxide, and discloses a preparation process of oil paint core-coated titanium dioxide, which comprises the following steps: a core layer is rutile type titanium dioxide particles with the particle size range of 0.1-0.5 mu m and the specific surface area of 8-15m < 2 > / g, an inorganic coating layer is composed of silicon dioxide and aluminum oxide according to the mass ratio of 1: (0.2-1.5), the coating thickness is 5-15% of the diameter of the core layer, and the inorganic coating layer is composed of silicon dioxide and aluminum oxide according to the mass ratio of 1: (0.2-1.5). Wherein the silicon dioxide is coated by a hydrolytic deposition method, the aluminum oxide is coated by a sol-gel method, the organic coating layer comprises a copolymer containing a silane coupling agent and organic silicon resin, the organic silicon resin is methyl phenyl silicon resin, the organic coating layer accounts for 1-8% of the total mass of the titanium dioxide, and the surface contact angle of the organic coating layer is greater than or equal to 110 degrees. According to the preparation process of the oil paint core-coated titanium dioxide, an inorganic-organic gradient coating system is constructed, so that the core-coated titanium dioxide has a gloss retention rate of more than 95% (ASTM D523) and a delta E color difference of less than 1.5 (ISO 7724) after 1000 hours in a QUV accelerated aging test, and the weather resistance of the core-coated titanium dioxide is improved by more than 3 times compared with that of the traditional titanium dioxide.

The invention belongs to the technical field of polymer composite materials, and particularly relates to an oil-resistant interior material. The material comprises a porous base material layer, a fluorine-containing polymer and organic silicon resin blended oil-resistant functional layer and a micro-nano structure layer with a periodic micro-bulge array, surface modified nanoparticles are distributed in the functional layer in a gradient manner, and the micro-bulge surface is covered with a perfluoropolyether / fluorinated silicon dioxide composite coating; through a synergistic effect of a low-surface-energy oleophobic interface formed through chemical bonding and curing and a micro-structure capillary lifting effect, anti-permeation barrier of high-viscosity grease is realized, and meanwhile, mechanical wear resistance and thermal stability are improved by virtue of a nano-particle enhanced cross-linked network; and continuous imprinting and an ultraviolet-thermal dual-curing process are combined to achieve high-efficiency manufacturing with zero solvent residue, and finally the interior material with long-acting oil resistance, high environmental tolerance and industrial mass production feasibility is obtained.

The present invention relates to the field of heat-conducting interface materials, and in particular relates to single-component high-thermal-conductivity silicone mud and a preparation method therefor. The single-component high-thermal-conductivity silicone mud is composed of the following components: 100 parts of silicone oil, 10-50 parts of an MQ silicone resin, and 1500-2600 parts of a high-thermal-conductivity powder. The silicone mud further comprises 0.3-10 parts of a chain extender, 0.5-5 parts of a cross-linking agent, 1-10 parts of a catalyst, 5-20 parts of a tackifier, 5-15 parts of a plasticizer, and 1-5 parts of a pigment. In the present application, by cooperating both the silicone oil and the MQ silicone resin with a heat-conducting filler and other components, the heat-conducting silicone mud, which has good plasticity, high heat conductivity, low oil permeability and low high-and-low-temperature plastic deformability, can be obtained. Moreover, by further regulating and controlling the structures of the silicone oil and the MQ resin and the reaction conditions in the preparation process, the comprehensive performance of the silicone mud is further improved.

The invention discloses a self-cleaning photovoltaic super-hydrophobic coating based on a nano-porous structure and a preparation method of the self-cleaning photovoltaic super-hydrophobic coating, and belongs to the technical field of photovoltaic panel coatings. The coating comprises the following components in percentage by mass: 15-25% of nano porous silicon dioxide particles, 5-10% of a low surface energy modifier, 3-8% of photocatalytic nano titanium dioxide, 30-40% of organic silicon resin and the balance of deionized water. The coating has super-hydrophobicity, photocatalytic decomposition of organic matters and wear resistance, can solve the problems of photovoltaic panel dust accumulation, bird droppings, organic matter pollution and the like, and improves the power generation efficiency of a photovoltaic system.

The invention provides silicone rubber and a preparation method thereof. The invention provides silicon rubber. The silicon rubber is prepared from the following raw materials: vinyl-terminated polydimethylsiloxane, vinyl MQ silicon resin, an adhesion promoter, titanium dioxide, polymethylhydrosiloxane and a reaction inhibitor. The preparation method of the silicone rubber comprises the following steps: in the presence of a catalyst, mixing a mixture of vinyl-terminated polydimethylsiloxane and vinyl MQ silicon resin, an adhesion promoter, titanium dioxide, polymethylhydrosiloxane and a reaction inhibitor to obtain the silicone rubber. The silicone rubber disclosed by the invention has high reflectivity, low thixotropy, high fluidity, high heat resistance and storage stability, and is relatively simple in production process and suitable for industrial production.

The invention discloses a silica gel pad with high thermal conductivity and heat resistance and a preparation method thereof, and the method comprises the following steps: preparing a composite thermal conductive filler, mixing boron nitride nanosheets and graphene according to a certain mass ratio, adding a silane coupling agent, carrying out ball milling, adding spherical alumina, and mixing; preparing modified organic silicon resin, wherein methyl vinyl silicone rubber, hydrogen-containing silicone oil, a platinum catalyst and MQ silicon resin react to obtain the modified organic silicon resin; mixing and defoaming the modified organic silicon resin, the composite heat-conducting filler, the flame retardant and the antioxidant to obtain a heat-conducting silica gel mixture; preparing a reinforced base material, carrying out plasma treatment on glass fiber cloth, and then impregnating the glass fiber cloth with vinyl ester resin for pre-curing; and grinding the mixture by three rollers, coating the mixture on a reinforced base material, and heating and curing. The thermal conductivity of the obtained silica gel pad is 2.5-3.5 W / m.K, the volume resistivity is larger than 1012 omega.cm, the long-term heat-resistant temperature reaches 200 DEG C or above, the tensile strength is larger than 5 MPa, the peel strength is larger than 15 N / cm, and the silica gel pad has excellent thermal conductivity, insulativity, heat resistance and mechanical strength.

The invention belongs to the technical field of coatings, and particularly relates to a composite organic silicon anticorrosive coating and a preparation method thereof.The composite organic silicon anticorrosive coating further comprises the following raw materials in parts by weight besides a solvent: 80-95 parts of phenolic epoxy modified organic silicon resin; 1.4 to 3.5 parts of an amine curing agent; 0.08 part to 0.19 part of lithium chloride; 23 parts to 36 parts of filler; the amine curing agent comprises polyamine. According to the composite organic silicon anticorrosive paint disclosed by the invention, under the action of the amine curing agent containing polyamine and lithium chloride, the phenolic epoxy modified organic silicon resin and the filler are mixed and coated on a metal surface, and cross-linking curing of phenolic epoxy molecular chain extension and cross-linking curing of phenolic epoxy molecular chain branch linkage are uniformly carried out; the composite organic silicon anticorrosive coating with excellent impact resistance, hardness and adhesive force is formed.

The invention relates to the technical field of organic silicon coatings, in particular to a preparation method of an organic silicon antifouling coating for slowly releasing a lubricant. The preparation method of the organosilicon antifouling coating of the slow-release lubricant comprises the following steps: carrying out emulsion polymerization on silicon dioxide nanoparticles, acryloyloxy alkyl alkoxy silane, fluorine-containing acrylate and lubricating oil in a redox system to obtain a fluorine-silicon modified silicon dioxide nanoparticle emulsion of which the surface is attached with the lubricating oil; and then mixing with organic silicon resin, a coupling agent, a cross-linking agent and a catalyst, and carrying out cross-linking curing to obtain the organic silicon coating. The lubricating oil is adsorbed on the surfaces of the nano particles under the action of grafted functional groups of the functionalized nano particles, so that the lubricating oil is introduced into the organic silicon coating in the form of emulsion particles, micro-nano lubricating oil droplets are formed, long-acting slow release of the lubricating oil is realized, the amphiphobic property and low surface energy of the coating are improved, and the antifouling capacity of the coating is improved; meanwhile, the mechanical property is improved.

The invention provides a phenyl-containing organic silicon resin film-forming agent as well as a preparation method and application thereof. The organic silicon resin film-forming agent comprises organic silicon resin as shown in a structural general formula (I): (R13SiO0.5) a (R2SiO1.5) b (PhSiO1.5) c (SiO2) 1 (I), wherein a is greater than 0.2 and less than 1; b > = 0; 0.1 < c < 1. According to the organic silicon resin film-forming agent disclosed by the invention, by reasonably matching the proportion of each unit and introducing a phenyl group, the obtained organic silicon resin film-forming agent not only has excellent film-forming property and flexibility, but also has excellent compatibility with natural grease and other organic matters containing a large number of alkyl groups. In addition, the organic silicon resin film-forming agent also has excellent skin-attaching performance and is difficult to wipe manually after being coated on the skin to form a film, various performances can meet the requirements of daily chemical products, and the organic silicon resin film-forming agent can be widely applied to daily cosmetics, personal care products or medical products.