260 results about "Silicone Elastomers" patented technology

The invention relates to a soft mesh magnetic sensor for tactile and non-tactile perception. The sensor comprises a neodymium iron boron-organic silicon elastomer magnetic film, an aluminum foil, a PDMS elastomer, a TMR element and a printed circuit board, wherein the TMR element is welded on the printed circuit board, and the PDMS elastomer coats the TMR element and covers the PCB; the PDMS elastomer is covered with an aluminum foil, and a neodymium iron boron-organic silicon elastomer magnetic film is arranged on the aluminum foil; the PDMS elastomer is of a sandwich structure and is composed of an upper thin film, a lower thin film and a middle small cylinder array. The lower film is provided with a strip-shaped groove which is used for wrapping the TMR element. The soft grid magnetic sensor disclosed by the invention has the advantages of high sensitivity, high flexibility and strong multi-mode sensing capability.

The invention relates to the technical field of PC resin flexibilizers, and discloses a shell-core structure styrene-acrylic resin modified organic silicon elastomer flexibilizer as well as a preparation method and application thereof in order to solve the problems that an organic silicon material and PC resin are poor in intersolubility, a traditional flexibilizer is poor in low-temperature toughening performance and the like. Comprising the following steps: uniformly mixing hydrogen-containing silicone oil, vinyl silicone oil, a third alkenyl functional component and a catalyst, and pre-emulsifying under the action of a surfactant and a thickener to obtain an organic silicon pre-emulsion SiE; uniformly mixing an alkenyl phenyl compound, acrylate and / or a cross-linking agent, adding a molecular weight regulator and an oil-soluble initiator, and pre-emulsifying under the action of a surfactant and water to obtain a styrene-acrylic pre-emulsion SAE; the preparation method comprises the following steps: firstly, preparing an organic silicon pre-emulsion, then heating the organic silicon pre-emulsion to carry out a water-phase hydrosilylation addition reaction, then dropwise adding the styrene-acrylic pre-emulsion to carry out suspension emulsion copolymerization, and then demulsifying and drying to obtain the styrene-acrylic resin modified organic silicon elastomer toughening agent with the core-shell structure.

The invention discloses a preparation method of a high-boron filling type dynamic crosslinking organic silicon elastomer. The high-boron filling type dynamic crosslinking organic silicon elastomer is prepared from the following raw materials: 100 parts of vinyl silicone rubber, 0.1-10 parts of a thermal initiator, 1-20 parts of sulfydryl-terminated boric acid ester and 1-50 parts of polyborosiloxane gel PBS. The preparation method comprises the following steps: firstly, preparing polyborosiloxane (PBS) gel by utilizing esterification reaction; secondly, synthesizing sulfydryl-terminated boric acid ester, and preparing a high-boron filling type dynamic crosslinking organic silicon elastomer by utilizing a mixing reactor; and finally, an organic silicon sample piece is processed by compression molding. The invention develops a method which is simple to operate and can be used for preparing the high-boron filling type dynamic crosslinking organic silicon elastomer in batches, and the obtained organic silicon elastomer has the advantages of sensitive strain rate response, good metal adhesion, good heat resistance and repeated thermoplastic processing.

The invention discloses a high-temperature-resistant organic silicon elastomer with high mechanical property as well as preparation and application thereof, and belongs to the technical field of functional materials. The high-temperature-resistant organic silicon elastomer with high mechanical property is prepared from the following raw materials: hydroxyl silicone oil, white carbon black nanoparticles, a silane monomer cross-linking agent, a silane coupling agent and stannous octoate, and the catalyst also comprises cage-shaped titanium oxygen cluster molecules. According to the invention, by simultaneously using the components, the composite high-temperature-resistant organic silicon elastomer material can be provided, the thermal collapse temperature of the material is almost 500 DEG C, and the composite high-temperature-resistant organic silicon elastomer material is good in thermal stability and mechanical tensile strength and wide in application prospect.

A conformable piezoelectric transducer array for performing ultrasound or the like includes a silicone elastomer substrate and a silicone elastomer superstrate. A plurality of piezoelectric transducer elements are disposed between the substrate and superstrate. A first electrical interconnect layer electrically interconnects a first surface of the transducer elements adjacent to the substrate and a second electrical interconnect layer electrically interconnecting a second surface of the transducer elements adjacent to the superstrate.

The invention discloses an elastic powder block type cosmetic product and a preparation method thereof. The elastic powder block cosmetic product comprises a powder component, an oil phase component, a preservative and an antioxidant, the oil phase component comprises an organic silicon elastomer, an ester composition and silicone oil; wherein the organic silicon elastomer is prepared from a polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer; the ester composition comprises isononyl isononanoate and diisostearyl malate, and the mass ratio of isononyl isononanoate to diisostearyl malate is (2: 1)-(3: 1); the silicone oil comprises polydimethylsiloxane; the mass ratio of the organic silicon elastomer to the ester composition is (1: 11)-(1: 13.5). The elastic powder block type cosmetic product is moderate in viscosity, light and thin in texture and good in ductility, stability and makeup maintaining performance.

The invention relates to the technical field of cosmetics and particularly discloses an emulsified lipstick and a preparation method thereof. The invention discloses an emulsified lipstick. The invention discloses an antibacterial and mildew-proof laundry detergent which is prepared from the following raw materials in parts by weight: 16-3 parts of a thickening agent, 3-8 parts of an adhesive, 11-22 parts of an emollient, 10-20 parts of an emulsifier, 0.9-23 parts of a coloring agent, 10-20 parts of deionized water, 6-30 parts of a humectant, 0.1-0.5 part of a chelating agent, 0.01-0.5 part of an antioxidant, 0.2-2 parts of an antibacterial agent, 5-10 parts of pentaerythritol tetraisostearate, 1-10 parts of silica dimethylsilylate and 1-10 parts of an organic silicon elastomer. The preparation method comprises the following steps: firstly, preparing an oil-phase mixture and a water-phase mixture; and adding the water-phase mixed material in the process of homogenizing the oil-phase mixed material, cooling, molding, and demolding to obtain the product. The emulsified lipstick provided by the invention can give consideration to both excellent smearing uniformity and makeup holding effect, and the overall application quality is relatively good.

The present invention discloses a wash-free water-in-oil cosmetic emulsion, the wash-free water-in-oil cosmetic emulsion comprising: an aqueous phase comprising water and a hydrophilic thickener consisting of polyvinylpyrrolidone, the aqueous phase being free of other hydrophilic thickeners; an oil control filler comprising a silicone elastomer; the organic ultraviolet filtering agent is prepared from octyl salicylate; at least one silicone oil; and at least one silicone emulsifier.

The invention discloses a silicone gel dressing and a production process thereof. The silicone gel dressing comprises a three-dimensional cross-linked organic silicone elastomer network and a stably dispersed functional unit, wherein the functional unit comprises a nanosheet layer reinforcing structure formed by stripping organic modified layered silicate and polysaccharide-based microspheres for encapsulating bioactive factors. The production process comprises the steps of nano pre-dispersion preparation, main component mixing and defoaming, active microsphere mild mixing and gradient curing structure forming. The contradiction between technical effect analysis and flexibility is solved through a nanosheet layer enhanced structure, the polysaccharide-based microspheres achieve slow release of bioactive factors, the air permeability and the adhesion are improved through a sandwich porosity gradient structure, the process is accurate and controllable, and the method is suitable for scar management.

The present invention relates to the use of silicone elastomers obtainable from defined addition cross-linked organopolysiloxane compositions in dielectric elastomer actuators (DEAs), which allow for significantly prolonged lifetime compared to prior art DEAs.

The invention discloses organic silicon modified wood lacquer and a preparation method thereof, and relates to the technical field of coatings. The invention discloses organic silicon modified wood lacquer. The water-based silicone sealant is prepared from the following raw materials in parts by weight: 20 to 35 parts of hydroxyl-terminated polydimethylsiloxane, 8 to 15 parts of methyltrimethoxysilane, 12 to 20 parts of bio-based polyol, 6 to 12 parts of isophorone diisocyanate, 3 to 8 parts of modified nano titanium dioxide, 5 to 10 parts of polyvinylidene fluoride, 4 to 9 parts of modified organosilicone elastomer, 0.2 to 0.8 part of dibutyltin dilaurate and 1 to 3 parts of ammonium polyacrylate. 0.5 to 1.5 parts of polyether modified polysiloxane, 2 to 6 parts of alcohol ester-12 and 15 to 30 parts of deionized water. According to the organic silicon modified wood lacquer, hydroxyl-terminated polydimethylsiloxane serves as a matrix, cross-linking is conducted through methyl trimethoxy silane, toughening is conducted through bio-based polyhydric alcohol, an interpenetrating network structure is formed in cooperation with multiple layers of modified nano titanium dioxide and the organic silicon elastomer, the organic silicon modified wood lacquer has high cross-linking density and flexibility, a coating is compact, and weather resistance is high.

The present application belongs to the technical field of antifouling coating, and particularly relates to an enzyme-containing organic silicon fouling release type antifouling coating and a preparation method thereof. The coating is mainly composed of amphiphilic functional polymer and antifouling enzyme. The antifouling enzyme is fixed by the amphiphilic functional polymer containing amino groups, and the antifouling enzyme is kept active by the hydrophilic property of the amphiphilic functional polymer. The enzyme-containing organic silicon fouling release type antifouling coating is prepared by adding the amphiphilic functional polymer immobilized antifouling enzyme into an organic silicon elastomer system. The organic silicon chain segment is used as an oleophilic part, and the antifouling enzyme is used in combination with the amphiphilic functional polymer. The stability of the antifouling enzyme in the organic solvent system and the seawater environment is ensured, the organic silicon elastomer coating has good antifouling performance and good environmental friendliness, the antifouling performance is further improved, the enzyme immobilization technology can be applied to the surface antifouling of marine ships and structures, and the enzyme immobilization technology can be applied to the pharmaceutical industry and daily chemical industry.

The invention discloses wide-temperature-range silicone rubber-based rubber for aerospace thermal protection, a composite material and a preparation method of the wide-temperature-range silicone rubber-based rubber. According to the invention, three monomers, i.e., methylcyclosiloxane, hexaethylcyclotrisiloxane and phenylene silicon monomer, are subjected to ring opening and condensation copolymerization to obtain polysiloxane macromolecules containing three different chain link structures. A phenylene structure is introduced into a silicon rubber main chain, so that the silicon elastomer main chain is limited to form a volatile cyclic oligomer through a chain back-biting reaction and a chain segment rearrangement exchange reaction, the thermal stability is improved, and the initial decomposition temperature is up to 450.16 DEG C; the regularity of a molecular chain is broken by introducing ethyl, so that the glass-transition temperature is as low as 120.2 DEG C, and no crystallization phenomenon occurs. The base adhesive has excellent cold resistance, radiation resistance, ablation resistance, high temperature resistance and the like, and can be used as the base adhesive to be applied to the aspects of aerospace craft protective coatings, dynamic seal putty adhesives, sealants and the like.

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.

A silicone elastomer composition contains the following components: (a) hydroxyl-functional polyorganosiloxane gum; (b) pendant alkenyl-functional polyorganosiloxane gum; (c) silylhydride-functional crosslinker containing an average of at least 2 SiH groups per molecule; (d) hydrosilylation catalyst; (e) hydrosilylation inhibitor; (f) solvent; (g) optionally, terminal alkenyl-functional polyorganosiloxane gum that is free of pendant alkenyl groups; and (h) optionally, tetraalkoxysilane; where: (i) the silicone elastomer composition is free of MQ resin; (ii) the weight ratio of components (a) / (b) is in a range of 0.1 to 10; (iii) the mole ratio of (SiH) / (C＝C) is in a range of one to 20; and (iv) the weight percent of alkenyl groups relative to total weight of components (a), (b) and (g) is in a range of 0.035 to 1.00.

Title: LIQUID MAKEUP COMPOSITION COMPRISING SILICONE FILM FORMERS, OILS, A SILICONE GUM AND PIGMENTS AND METHOD FOR IMPLEMENTING IT. The present invention relates to a liquid cosmetic makeup for human keratinous materials, in particular skin and / or lips, preferably lips, comprising: - at least 20% by weight of at least one first nonpolar hydrocarbon oil, linear or branched, preferably saturated, having 8 to 16 carbon atoms, - at least one second oil selected from silicone oils, volatile or non-volatile, - at least one silicone elastomer carried in a hydrocarbon or silicone oil, identical or not to the first or second oil(s), - at least one silicone resin, - at least one silicone polyamide, - at least one silicone gum, - at least 8% by weight of pigments, possibly water with a content of less than 5% by weight,- the weight ratio (silicone resin + silicone polyamide) / pigment(s) being between 1 and 2.7. It also relates to a makeup process, in which this composition is applied to said keratinous materials.

A cosmetic composition for providing a matte foundation can be provided comprising an oil-controlling filler, a colorant, a hydrocarbyl oil, a hydrocarbyl emulsifier, water, and a UV filter system consisting of an organic hydrophobic UV filter, an organic water-soluble UV filter, and an inorganic UV filter. The oil control filler may consist of a silica aerogel and optionally a modified starch, amorphous silica, clay, and / or a silicone elastomer. The organic hydrophobic UV filter may consist of octyl salicylate, and the cosmetic composition may be free of other organic hydrophobic UV filters. The organic water soluble UV filter may be comprised of 2-phenylbenzimidazole-5-sulfonic acid (PBSA), and the cosmetic composition may be free of other organic water soluble UV filters. The inorganic UV filter may consist of UV-grade titanium dioxide, and the cosmetic composition may be free of other inorganic UV filters.

In a method of applying a desired texture to a surface of a silicone elastomer, an uncured silicone elastomer is applied to at least one side of a polymeric film. At least one side of the polymeric film has a complementary texture that is complementary in shape to the desired texture. The uncured silicone elastomer is cured while it is in contact with the at least one side of the polymeric film so as to form a cured silicone elastomer. The polymeric film is removed from the cured silicone elastomer so as to expose the desired texture on the surface thereof. The flexible polymeric film can be a bag placed into a breast prosthesis mold. The bag includes at least one interior surface with the complementary texture. The bag is removed from the cured silicone elastomer to expose the breast prosthesis having a textured surface.

The present invention relates to a thickened aqueous composition comprising from about 0.01% to about 10% by weight of a superabsorbent polymer, from about 0.1% to about 20% of a silicone elastomer; and from about 20% to about 98% of water.

A silicone elastomer composition which is generally storage stable, and cures to an elastomeric body, comprising; (i) an organopolysiloxane polymer having at least two hydroxyl or hydrolysable groups; (ii) a siloxane and / or silane cross-linker having at least three groups per molecule which are reactable with the hydroxyl or hydrolysable groups in the organopolysiloxane polymer (i); (iii) a solid organosilicate resin which is substantially unreactive with components (i) and (ii) and comprising R32SiO1 / 2 and SiO4 / 2 siloxane units, wherein the molar ratio of the R32SiO1 / 2 siloxane units to SiO4 / 2 siloxane units is from 0.5:1 to 1.2:1, and R2 is selected from hydrocarbon groups; and optionally (iv) a suitable condensation cure catalyst. The solid organosilicate resin (iii) is generally utilised to create a low modulus room temperature vulcanisable (RTV) silicone composition which when cured may be used as a coating, an adhesive or a sealant having high movement capability.

A method for sealing joints in removable slabs (1a, 1b) separated by gaps (E) without fibrous elements, comprising, for at least one of said gaps: a. the creation of a joint backing by positioning at the bottom of said gap one or more elastic elements (2) made of preformed polymer foam with a cross-section adapted to fill the width of said gap (E), b. filling an upper portion of said gap (E), above the joint backing, with a layer of two-component silicone elastomer (3) curable by polyaddition, c. curing said two-component silicone layer (3) to create a removable sealing coating for said gap. Figure 3

The invention discloses a method for preparing highly uniform silicone elastomer gel by accurately controlling in-situ cross-linking reaction, and relates to the technical field of preparation of high polymer materials and organic silicone gel. The invention relates to a silicone sealant, which comprises the following components: a dispersion medium: 60 wt%-90 wt% of polyorganosiloxane; a first reactant: 10 wt%-30 wt% of polyorganosiloxane containing at least two aliphatic unsaturated groups in the molecule; a second reactant: 0.5 wt%-10 wt% of polyorganosiloxane, the molecule of which at least contains two silicon-bonded hydrogen atoms (Si-H); the catalyst is a platinum-based catalyst and is used for promoting the hydrogen silicification reaction. The preparation method comprises the following steps: 1, mixing a first reactant and a second reactant in a dispersion medium with the viscosity of 2-100 cSt, and removing oxygen through nitrogen substitution; and 2, adding a platinum catalyst into the mixture obtained in the step 1, and carrying out an in-situ cross-linking reaction on the polysiloxane containing the aliphatic unsaturated group and the polysiloxane containing the silicon-bonded hydrogen atom so as to directly form particles.

The present invention provides a silicone pressure-sensitive adhesive, which is prepared by curing a hydrosilylation reaction-curable composition. The composition comprises: (A) a polydiorganosiloxane gum component, (B) a polyorganosilicate resin component, (C) a hydrosilylation reaction catalyst, (D) a polyorganohydrogensiloxane, (E) an alkyl borate, (F) a hydrosilylation reaction inhibitor, (G) a solvent, and (H) an anchoring additive. The silicone pressure-sensitive adhesive adheres to an optical silicone elastomer and can be used to prepare components of a flexible display device.

The invention relates to a protective device (1) for protecting against the effects of impacts, blows, shots or the like, which is multi-layered and has a first side (2) and a second side (3) opposite said first side (2), wherein - a first layer (4) which is arranged on or forms the first side, - a second layer (5), wherein the second layer (5) is formed of an elastic, repeating geometric structure (6) made of a plastic and / or a silicone rubber and / or silicone elastomers and / or casting resin, having a hardness between 20 SHORE A and 90 SHORE A and / or between 0 SHORE D and 80 SHORE D, wherein the structure (6) forms cavities (8, 8') delimited by walls (7), which cavities are closed in an air-tight manner in the direction of the first side (2) and are open in the direction of the second side (3) and form opening sections (9) of the cavities (8, 8'), - a third layer (10) which is arranged on or forms the second side (3) and is arranged on the second layer (5) and at least temporarily closes the cavities (8, 8') at the opening sections (9) or at least temporarily reduces a degree of opening of the opening sections (9).

The present disclosure relates to a hydrosilylation (addition) curable silicone rubber composition, a silicone elastomer material produced by curing the hydrosilylation (addition) curable silicone rubber composition and having improved high temperature (≧190°C) compression set according to ISO 815-1 Method A, and a method for preparing the silicone elastomer material.

The application belongs to the field of new materials, and discloses a kind of organic silicon elastomer, which is prepared from branched hydrogen-containing silicone oil and crosslinking agent containing olefin bond function;The branched hydrogen-containing silicone oil is prepared from hydrogen-containing silicone oil and single-end vinyl silicone oil.The organic silicon elastomer is polymerized by using branched hydrogen-containing silicone oil and crosslinking agent containing olefin bond function, and the single-end vinyl silicone oil first occupies part of the Si-H bond of the hydrogen-containing silicone oil, the crosslinking agent occupies the remaining Si-H bond of the hydrogen-containing silicone oil, and a small amount of crosslinking is combined through the side chain winding in the elastomer, which improves the light transmittance and viscosity of the gel containing the elastomer.The application also provides a preparation method of the elastomer, daily chemical products containing the elastomer and the use of the elastomer.

To provide a crosslinkable silicone composition that enables formation of a silicone elastomer exhibiting a high dielectric constant and low elastic modulus.SOLUTION: A crosslinkable cyclic carbonate-modified silicone composition comprises: a linear or branched cyclic carbonate-modified silicone polymer (A) having a weight-average molecular weight of 2500 or more and containing structural units having a vinyl group and structural units having a cyclic carbonate group in a side chain; and a linear or branched cyclic carbonate-modified silicone polymer (B) having a weight-average molecular weight of 2500 or more and containing structural units having a hydrosilyl group and structural units having a cyclic carbonate group in a side chain; wherein, in the silicone polymer (A), a ratio of the branched structural units to the total of the linear and branched structural units is 0 to 30 mol%, and in the silicone polymer (B), a ratio of the branched structural units to the total of the linear and branched structural units is 0 to 30 mol%, and the crosslink density is 0.35 mmol / g or more.SELECTED DRAWING: None

The invention discloses a low-temperature-resistant high-strength electric wire and cable, which comprises a plurality of electric wires, each electric wire comprises an electric wire conductor and a sheath layer wrapping the electric wire conductor, and the electric wires are processed by the following steps: adding modified nitrile rubber, loaded mica powder, a modified fluorosilicone elastomer, a vulcanizing agent and an auxiliary additive into a mixing mill with the temperature of 145-155 DEG C, and stirring uniformly; mixing for 5-8 minutes to obtain a rubber compound; the sheath layer is formed outside the wire conductor after the rubber compound composed of the modified nitrile rubber, the loaded mica powder and the modified fluorosilicone elastomer is subjected to vulcanization treatment, so that the mechanical strength and low temperature resistance of the wire cable are effectively improved, and the flame retardance and insulating strength of the wire cable material are also improved.

The present disclosure relates to a hydrosilylated (addition) curable silicone rubber composition, to a silicone elastomeric material having improved high temperature (175 DEG C) compressive deformation according to ISO 815-1 process A, which silicone elastomeric material is produced by curing the hydrosilylated (addition) curable silicone rubber composition, the invention also relates to a method for preparing the silicone elastomer material. The disclosure also extends to uses of such materials.

The application discloses an extreme environment stable fatigue fracture self-adhesion ion skin and a preparation method and application thereof. The ion skin is formed by combination of chemically inert low cross-linked polydimethylsiloxane elastomer and perfluoroether rubber respectively with a stretchable ion conductive elastic fiber network through mechanical interlocking technology; wherein the polydimethylsiloxane elastomer is prepared by polymerization and curing of a silicone elastomer base and a PDMS curing agent, the perfluoroether rubber is obtained after solvent volatilization of a perfluoroether rubber solution, and the stretchable ion conductive elastic fiber network is obtained by electrospinning; the strength of the ion skin is greater than or equal to 9.9 MPa, the toughness is greater than or equal to 10 MJm ‑3 , the tensile strain is greater than or equal to 355%, the tensile toughness is greater than or equal to 5.7 MJm ‑3 , and the breaking energy is greater than or equal to 71.6 kJm ‑2 . The application of the ion skin in preparation of a flexible stretchable electronic device in an extreme environment. The application has simple process, excellent mechanical properties, extreme environment tolerance and self-adaptive surface adhesion capacity.