193 results about "Silicon disulfide" patented technology

The invention discloses a preparation method of a mixed filling type thermal conductive silicone rubber composite. Raw materials comprises the following components, by mass, 100 parts of raw silicone rubber, 10 parts of white carbon black, 1 to 3 parts of hydroxy silicone oil, 100 to 200 parts of a thermal conductive filler, 2 to 4 parts of a silane coupling agent and 2 parts of a di-2,5-vulanizator. The preparation method comprises the following steps: adding raw silicone rubber to a double roller mill; adding white carbon black, the thermal conductive filler, the silane coupling agent and hydroxy silicone oil according to a formula design after roller packaging; adding a peroxide vulcanizer after repeatedly and uniformly mixing; mixing uniformly to obtain mixed silicone rubber; putting in a die and carrying out first-stage vulcanization after cold pressing mold filling; and putting a molded sample in an air blasting drier and carrying out second-stage vulcanization to obtain a finished product. In the present invention, mixed particles of SiC and AlN are employed to fill high temperature vulcanized silicon rubber, effective thermal conductive net chains are formed in silicone rubber matrixes, so the obtained heat-conducting silicone rubber composite material has a good heat conducting performance.

The invention relates to an elastic anti-corrosion coating, which is a room-temperature silicon sulfide-based functional compound with high property. The formula of the coating comprises(in part by weight): 30 to 70 parts of polyorganosiloxane, 1 to 80 parts of pigments and fillers, 30 to 10 parts of crosslinking agent, 1 to 10 parts of auxiliary agent and 10 to 80 parts of thinning agent. The elastic anti-corrosion coating has high weathering resistance, water resistance, acid resistance, solvent resistance and oil resistance and alkali resistance; the paint film can be desirably adhered onto glass, ceramics, steel structural members, concrete, various resin primers and the like, and the paint film is good in elasticity and hydrophobicity and high in tensile strength and breaking elongation, can be widely used for the corrosion prevention of bridges, tanks and various steel structural members and the corrosion and leakage protection of ground, drainage channels and the like.

An evaluation method of the aging degree of an operational composite insulator comprises the steps of firstly utilizing a three-electrode volume resistivity test device to measure the volume resistivity of a round-slice high-temperature silicon sulfide rubber sampler which is cut from the surface of the net-hanging operational composite insulator at different temperatures, plotting a curve, calculating the linear fitting R2 of the curve, and finally comprehensively determining the aging degree of the composite insulator according to the change situation of the linear fitting R2 of the curve and the volume resistivity of the round-slice high-temperature silicon sulfide rubber sampler. According to the present invention, the aging degree of the composite insulator is determined comprehensively according to the change situation of the linear fitting R2 of the curve and the volume resistivity of the round-slice high-temperature silicon sulfide rubber sampler, so that the operation is simple and convenient, and the accuracy of the evaluation result is improved, and accordingly, the reliable operation of a high voltage power transmission line is guaranteed.

The invention discloses a preparation method of antibiosis high temperature silicone rubber. The method comprises the following steps: adhering antibiosis ions to a white carbon black carrier through a sol-gel technology to obtain antibiosis gel; and adding corresponding high temperature silicone rubber raw rubber, fully mixing, and vulcanizing to prepare a high temperature silicone rubber material with antibiosis ability, or directly adding high temperature silicon sulfide rubber, fully fusing, and curing to obtain the silicone rubber material with antibiosis ability. The antibiosis high temperature silicone rubber prepared in the invention has the advantages of high temperature resistance, enhancement of the mechanical performances of silicone rubber, high antibiosis, strong antibiosis broad spectrum activity, high sterilization rate, no generation of drug resistance, safety to human bodies and environment, wide uses, and facilitation of the large-scale quantitative production of the future market.

The invention discloses a bi-component room temperature vulcanizing silicone rubber for a photovoltaic component, which comprises an A component and a B component. During use, the A component and the B component are uniformly coated on a work piece according to proportion through a bi-component glue spreader. The bi-component room temperature vulcanizing silicone rubber is characterized in that: the A component is prepared by grinding the following raw materials in part by weight: 100 parts of hydroxyl-terminated dimethyl silicone polymer, 20 to 50 parts of plasticizer, 60 to 100 parts of stuffing and 6 to 10 parts of thixotropic agent through a three-roll grinder; the B component is prepared by mixing the following raw materials in part by weight: 5 to 10 parts of cross-linking agent, 0.2 to 1.5 parts of compound catalyst, 1 to 2 parts of adhesion agent and 0.5 to 1.5 parts of catalyst carrier under the protection of nitrogen. The invention overcomes the shortcomings of poor aging resistance of the room temperature vulcanizing silicone rubber catalyzed by conventional organotin, and has characteristics of excellent outdoor aging resistance, good adhesiveness, fast curing speed, no reversion after the curing and no color change; the invention greatly improves the high temperature resistance and the damp-heat aging resistance, and can meet the requirement on the process procedure by controlling the curing speed.

The invention discloses a primer coating for single-component room-temperature vulcanized silicone rubber. The primer coating is composed of the following components: A, 0.01-20 parts by weight of at least one of the following materials: polysiloxane, silane coupling agent, silicate ester, titanate and silicon resin; B, 10.00-85.00 parts by weight of organic solvent; and C, 0.01-1.20 parts by weight of essence. The preparation method of the primer coating for the single-component room-temperature vulcanized silicone rubber comprises the following steps of: A) evenly mixing the component A with the component C; 2) adding the component B and evenly mixing the mixture; and 3) filtering. The primer coating provided by the invention is directly applied to a substrate to be bonded in use and the process of applying glue can be performed in 20-45 seconds. The primer coating prepared by the method provided by the invention is capable of achieving the 100% cohesive failure of the single-component room-temperature vulcanized silicone rubber when the single-component room-temperature vulcanized silicone rubber is bonded with a plurality of kinds of surfaces; and as a result, the adhesion of the substrate with the single-component room-temperature vulcanized silicone rubber is enhanced.

The invention relates to a preparation method of a fast curing dealcoholization type transparent room-temperature silicon sulfide rubber. According to the preparation method disclosed by the invention, a water-absorbing material and an air permeable material are respectively added into a dealcoholization type transparent room-temperature silicon sulfide sealant, and the whole curing performance is improved. With the adoption of the preparation method, by adsorbing moisture in air by virtue of the water-absorbing material, absorption of a system to the moisture of a reactant is improved; by adding the air permeable material, capillary apertures and channels are formed in a dense structure of a crosslinking product, the moisture of the reactant is facilitated to enter, methyl alcohol as a product is facilitated to be released, the crosslinking speed is accelerated, the curing speed of an alcohol type transparent adhesive reaches the curing speed of an acetic acid type silicone sealant, and the curing speed of the existing silicone rubber is increased by 30-60 percent.

The invention is a room-temperature sulfurized organic-silicon sealing material, and comprise hydroxyl-capped poly-organic oxosilane 100 shares, filling 5-200 shares, chain extender 1-15 shares, cross-linked curing agent 1-20 shares, catalyst 0.01-5 shares, and tackifier 0.1-20 shares, mixing the above components at high vacuum. Its advantages are strong elastic retractility and rupture elongation above 800%; good bonding property and good adhesion to concrete, etc.

The invention relates to a method for preparing low-molecular-weight hydroxyl silicone oil, which comprises the following steps: adopting hexamethyl-cyclotrisiloxane as a raw material and perfluoro-sulfonate ion-exchange resin as a catalyst; reacting the materials at a temperature of between 50 and 70 DEG C for 1 to 2 hours in the presence of water and a solvent; filtering the mixture to remove the perfluoro-sulfonate ion-exchange resin; and vacuumizing the mixture at a temperature of between 20 and 80 DEG C and under a pressure of between 10 and 20 KPa and extracting out the solvent to obtain the low-molecular-weight hydroxyl silicone oil. The general formula of the hexamethyl-cyclotrisiloxane is (R2SiO)3, wherein R is Me; the dosage of the perfluoro-sulfonate ion-exchange resin is 1 to 10 percent of the weight of the hexamethyl-cyclotrisiloxane; the solvent is methanol, acetone or tetrahydrofuran; the molar ratio of the dosage of the water to the dosage of the hexamethyl-cyclotrisiloxane is 1.1-1.2:1; and the molar ratio of the dosage of the solvent to the dosage of the hexamethyl-cyclotrisiloxane is 1-5:1. The low-molecular-weight hydroxyl silicone oil is used as a silicon rubber structural control agent, an isolation paper coating, a mold releasing agent and room temperature silicon sulfide rubber; and the process is simple, the degree of polymerization is easy to control, and no environmental pollution exists.

The invention relates to a dealcoholization type room-temperature silicon sulfide rubber composite. The dealcoholization type room-temperature silicon sulfide rubber composite contains poly-diorganosiloxane of which the two molecular ends are hydroxyl groups, silazane shown in the formula in the specification, a titanium chelate catalyst, a cross-linking agent, formic acid, ethanedioic acid and/or monocarboxylic acid or polybasic carboxylic acid containing 3 to 5 carbon atoms, and a filling material, wherein in the formula, the definitions of A, R1 and R2 are described in the specification.

The invention relates to high-damping high-temperature silicon sulfide rubber and a preparation method and application thereof. The high-damping high-temperature silicon sulfide rubber is prepared from, by mass, 100 parts of a vulcanizing-agent-free mixed material and 0.5-3 parts of a vulcanizing agent. The vulcanizing-agent-free mixed material is prepared from, by mass, 100 parts of raw methyl vinyl silicone rubber, 5-30 parts of raw polymethylvinylphenylsiloxane rubber, 1-20 parts of a damping agent, 40-105 parts of filler and 1-12 parts of an anti-structuring agent. The damping coefficient of the high-damping high-temperature silicon sulfide rubber in the temperature range of 50-100 DEG C is larger than or equal to 0.2, stable damping and vibration-reducing performance can be kept in the wide temperature range, quality of prepared finished products is improved, and the high-damping high-temperature silicon sulfide rubber can be widely used in the wide-temperature-range fields such as automobiles, rail transit locomotives, ships, food and aerospace.

A method for producing a lithium ion conductive solid electrolyte including the step of bringing one or more compounds selected from phosphorous sulfide, germanium sulfide, silicon sulfide and boron sulfide into contact with lithium sulfide in a hydrocarbon-based solvent.

The invention relates to a composite insulating tower for a power grid transmission line, which comprises a main pole and at least one cross arm arranged on the main pole. The cross arm comprises an insulating rod and an umbrella body arranged on the outer side of the insulating rod. The umbrella body is made of silicon disulfide rubber. One end of the insulating rod is connected with the main pole. The other end of the insulating rod is connected with a hanging fitting. The hanging fitting extends along the axial direction of the cross arm and is used for arranging the transmission line or an insulator. The main pole and the insulating rod are formed by impregnating glass fiber yarns in a resin material. The composite insulating tower for the power grid transmission line comprises the main pole and the cross arm which are made of composite materials and serve as supporting parts of the transmission line, and a sheath and a shed are arranged on the outer side of the cross arm, so that the total height of the composite insulating tower for the power grid transmission line can be reduced without an insulator string or the insulator string shorter than the conventional insulator string to reduce the cost and the weight of the tower.

The invention discloses a low-moisture-permeability single-component dealcoholization type room-temperature silicon sulfide rubber sealing agent and a preparation method thereof. The sealing agent consists of the components in parts by weight: 100 parts of alpha, omega-divinyl polydimethylsiloxane, 3-8 parts of hydrogen-based silane, 0.5-3 parts of a platinum catalyst, 3-10 parts of simethicone, 10-30 parts of silane-modified polyisobutylene, 3-8 parts of a crosslinking agent, 1-5 parts of a silane coupling agent, 50-150 parts of a reinforcement filler and 1-5 parts of a catalyst. Compared with conventional single-component dealcoholization type room-temperature silicon sulfide rubber, the sealing agent disclosed by the invention has improved sealing performance and is low in moisture permeability, and harm to a sealing component due to invasion of water vapor can be effectively prevented.

The invention discloses a functionalized GO (graphene oxide) and RTV (room temperature vulcanization) silicone rubber nanocomposite and a preparation method thereof. The method comprises steps as follows: firstly, the surface of GO is grafted with maleimide siloxane, GO-PTESMI is obtained, then double bonds of maleimide on grafting chains in GO-PTESMI are subjected to a hydrosilation reaction with Si-H group terminated PDMS (polydimethylsiloxane) in a solution, and GO (functionalized GO) with surface linked with PDMS grafting chains containing imide groups is prepared; then the functionalized GO is dispersed in a dispersing agent uniformly, and the silicone rubber nanocomposite with different content of functionalized GO is prepared through solution blending. According to the invention, imide bonds and polysiloxane long chains are introduced to the surface of GO, so that interface interaction force and mechanical properties of the nanocompoiste can be improved simultaneously, and the RTV silicone rubber material with capacity of playing excellent performance of GO better is prepared.

The invention provides a method for improving surface hydrophobicity of a contaminated silicon sulfide rubber product. The method includes steps of providing the silicon sulfide rubber product contaminated by dirt; and injecting atmospheric-pressure low-temperature plasma jet on the dirt on the surface of the product for conducting surface treatment. The atmospheric-pressure low-temperature plasma jet acts on the dirt on the surface of the silicon sulfide rubber product and enables hydrophobicity of the surface of the silicon sulfide rubber product to be transferred to the surface of the dirt, so that flashover voltage on the surface of the contaminated silicon sulfide rubber product is kept. The processing efficiency is high. Surface hydrophobicity of contaminated composite insulators, post insulators, insulating bushes and the like can be improved ideally. Therefore, the method for improving surface hydrophobicity of the contaminated silicon sulfide rubber product is suitable for popularization and application.

The invention provides a silicon rubber, particularly relates to a high temperature resistant silicon sulfide rubber and belongs to the technical field of polymer materials. The high temperature resistant silicon rubber comprises the following constituents in parts by weight: 50-80 parts of vinyl silicon rubber, 5-10 parts of ethyl orthosilicate, 3-5 parts of thermosetting phenol resin, 10-15 parts of polyvinyl chloride resin, 5-10 parts of tri-n-butyl citrate, 5-8 parts of white carbon black, 3-5 parts of calcium carbonate, 5-8 parts of talcum powder, 2-4 parts of iron trioxide, 2-4 parts of magnesium oxide, 3-4 parts of zinc oxide, 2-3 parts of aluminum oxide, 5-10 parts of hydroxyl silicone oil, 3-6 parts of zinc stearate, 4-6 parts of coupling agent, 3-6 parts of cross-linking agent, 4-8 parts of vulcanizing agent and 3-7 parts of anti-aging agent. The silicon rubber provided by the invention has better mechanical property and high temperature resistance, the hardness can be more than 70HA, the tensile strength can be more than 9.5MPa, the elongation can be more than 420%, and the thermal decomposition temperature can be more than 450 DEG C.

The invention relates to the technical field of heat-conducting siliconfilms, and discloses a heat-conducting siliconfilm and a manufacturing method of the heat-conducting siliconfilm. One surface of the heat-conducting siliconfilm is a viscous layer, the other surface of the heat-conducting siliconfilm is a non-viscous layer, the viscous layer comprises liquid state silicone, solid heat conduction powder and fire retardants, the non-viscous layer comprises high-temperature silicon disulfide rubber and solid heat conduction powder, and the high-temperature silicon disulfide rubber is rubber compound. When being used, the heat-conducting siliconfilm with the viscous layer at one surface and the non-viscous layer at the other surface is convenient to disassemble, the problem of non-uniform radiating of heterogeneous materials with different heat condition performances can not be worried when the siliconfilm is used, and as the heat amount is accumulated, the radiating effect of the siliconfilm is greatly enhanced. The coefficient of heat conductivity of the siliconfilm provided by the invention is more than 0.8W/m.K, and can reach more than 5W/m.K according to different types and quantities of the added solid heat conduction powder.

The invention provides a super-hydrophobic polypropylene film and a preparation method thereof, belonging to the technical field of superhydrophobic film materials. The invention solves the problems of too high preparation cost, complex process, and the like in the traditional super-hydrophobic polypropylene film. The surface structure of the super-hydrophobic polypropylene film is similar to the surface structure of natural taro leaf. The preparation method for the super-hydrophobic polypropylene film comprises the following steps of: placing the fresh taro leaf into a casting mold, mixing and stirring liquid room temperature vulcanizing silicone rubber with a catalyst and a crosslinking agent thereof in proportions, pumping air bubbles in the mixture, and then pouring the mixture on the fresh taro leaf in the mold, and finally obtaining a vulcanized silicone rubber soft template after curing in an atmospheric environment at a room temperature. By casting polypropylene solution with the concentration of 1 to 100 mg/ml onto the vulcanized silicone rubber soft template, and then drying in the atmospheric environment at the room temperature and tearing off, the super-hydrophobic polypropylene film is obtained. The super-hydrophobic polypropylene film has the advantages of simple preparation process, good reproducibility, and very good industrial application prospect without needing any expensive equipment.

A method for producing an ionic conductive substance, including a step of contacting raw materials in a solvent, wherein the raw materials include: one or more compounds selected from phosphorus sulfide, germanium sulfide, silicon sulfide and boron sulfide; a sulfide of a metal element belonging to group I or group II of the periodic table; and a halogen compound represented by M_wX_x wherein M is Li, B, Na, K, Rb, Cs, Ca, Mg, Sr, Ba, Al, Si, P, S, Ge, As, Se, Sn, Sb, Te, Pb or Bi, w is 1 or 2, X is F, Cl, Br or I, and x is an arbitrary integer selected from 1 to 10.

The invention discloses a method for preparing a natural rubber exhaust gasket for forming rubber shoes. The method comprises the following steps of: vulcanizing natural rubber to obtain a rubber body of the exhaust gasket; painting a layer of gasoline mucilage on the reverse side of interlock and drying; cutting the interlock and the rubber body of the exhaust gasket according to the shape requirements of the rubber gasket, placing the rubber body of the exhaust gasket on the side of the interlock painted with the gasoline mucilage, putting in a module and boiling in water for heating, and taking the rubber exhaust gasket out and cooling to obtain an exhaust gasket blank; and painting room-temperature silicon disulfide rubber on the interlock side of the exhaust gasket blank and standing at room temperature for more than 5 days to obtain the finished product. In the method, the high-elasticity vulcanized sponge rubber of the natural rubber is used as the substrate of the exhaust gasket, the elasticity and flexibility of the rubber body are adjusted by using a boiling and foaming process, the surface of the rubber substrate is enhanced due to the adoption of the high-elasticity interlock, the service life of the exhaust gasket is prolonged and the force transfer effect is improved; moreover, due to the room-temperature silicon disulfide rubber coating on the surface layer, the rubber components of the rubber shoes are effectively isolated and the original shape of the patterns of the rubber components of the rubber shoes is maintained.

The present invention relates to a manufacturing method of single component water dispersivity room temperature evaporated sulfuration silicones sealing gum. The manufacturing method is characterized in that the method includes the steps as follows: wherein the raw materials are all parts by weight; 100 shares of anion hydroxide radical silicon oil, 1.5 to 6 shares of anion active agent, 0 to 6 shares of non-ion active agent and 60 to 150 shares of de-ionized water are processed in a high pressure viscolizer for one to three times, the mixture is added into a reaction kettle with a blender, and the mixture reacts for 24 to 72 hours under the temperature of 5 to 80 degree centigrade, then 0.5 to 20 shares of metal alkaline silicate or silica sol and 0.02 to 5 shares of stanniferous catalyzing compound are added for curing 2 to 3 days to get Alpha and Omega to (dihydroxy) dimer organic siloxane polymer latex; the latex, 0 to 5 shares of organic silicon resin acceptor, 50 to 180 shares of inorganic filler, 0.1 to 1 shares of thickening agent and 0.1 to 1 shares of foam killer are added into a kneader for evenly mixing to get single component water dispersivity room temperature evaporated sulfuration silicones sealing gum.