320 results about "Silicone Elastomers" patented technology

The invention discloses a preparation method of a 3D printing multi-scale layered rigid-flexible impact-resistant composite material. The method comprises the following steps: designing a PLA skeleton with a multi-scale layered structure, and carrying out slicing processing to obtain an STL format file; the preparation method comprises the following steps: preparing a PLA framework through 3D printing, injecting a silicon elastomer serving as a soft material and a binder into a multi-stage layered structure of the framework, and curing to obtain the composite material. The composite material has a layered structure with three scales, the structure is realized by designing a patterned microstructure for each layer to induce a 3D printing path to stack layer by layer, and complex programming is not needed; the silicic acid gel in the gaps of each stage of layered structure is integrally formed, the composite material has the rigid-flexible coupling property, the hard PLA framework enables the composite material to have good mechanical properties, and the soft silicic acid gel provides larger deformation in the impact resisting process to achieve energy dissipation; tooth-shaped protruding interface structures which are embedded in a staggered mode are designed on the contact faces between the macroscopic layers, and the deflection direction of cracks is induced.

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.

Provided are silicone elastomer particles having a crosslinked structure which is active with respect to biodegradability, and can provide texture and feel during use that is equal to or higher than conventional silicone elastomer particles when blended in a cosmetic composition or the like, a reactive group-containing polycaprolactone compound having a specific structure and useful as a raw material for synthesis reactions, and a method for producing the same. A polycaprolactone compound containing a reactive group having two or more modified polycaprolactone structures has the structural formula (1) as described herein, where in the formula, n is a number in the range 1 to 5 and Ra is a specific (meth)acryl terminal group or alkenyl terminal group, specifically, a compound selected from the aforementioned (meth)acryl-modified polycaprolactone compounds and alkenyl-modified polycaprolactone compounds.

The invention relates to the technical field of electronic packaging adhesives, in particular to a coating film for COB (Chip On Board) surface treatment and a preparation process of the coating film. According to the invention, titanium-containing polysiloxane is prepared, and titanium atoms are connected into the structure of polysiloxane, so that the high temperature resistance and mechanical properties of the COB packaging adhesive are improved, and the mechanical properties, high temperature resistance and aging resistance of a coating film are further improved; according to the present invention, the organosilicon elastomer microspheres and the oyster shell powder-polymethylhydrosiloxane graft are subjected to mutual crosslinking so as to obtain the organosilicon elastomer composite material, such that the thermal expansion coefficient and the mechanical property of the COB packaging adhesive can be adjusted by using the oyster shell powder component so as to further enhance the mechanical property and the high temperature resistance of the coating film, and reduce the warping rate of the coating film; and the curing forming speed of the covering film is increased, the curing time is shortened, and the production efficiency is improved.

The invention relates to the technical field of organic silicon elastomers, in particular to a multi-synergistic self-repairing polysiloxane elastomer and a preparation method thereof, and the preparation method is based on a dynamic borate bond and imine bond synergistic preparation process and a hydrogen bond and dynamic borate bond / imine bond synergistic preparation process. Compared with a single dynamic imine bond or borate bond self-repairing system, the preparation method of the multi-synergetic self-repairing polysiloxane elastomer has the advantages that the mechanical property and the self-repairing efficiency of a material are improved by utilizing a strong and weak dynamic bond synergetic system, the process for preparing the organic silicon elastomer is simple, convenient and feasible, the reaction period is short, and the cost is low. The reaction can be completed under the room temperature condition, the self-healing condition is mild, a sample can be self-repaired only under the room temperature condition, industrial production and practical application are greatly facilitated, and the method is expected to be applied to sealing materials and flexible electronic devices. The used raw materials are commercially available, so that large-scale production in industrialization is facilitated.

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 high-toughness heat-resistant self-repairing organic silicon elastomer material and a preparation method thereof. The high-toughness heat-resistant self-repairing organic silicon elastomer material is obtained by sequentially reacting side methyl aminopropyl polysiloxane with phenylboronic acid derivatives, metal salt and terephthalaldehyde and then curing. The molecular weight of the side methyl aminopropyl polysiloxane is 2000 to 30000 g mol <-1 >. The side methyl aminopropyl polysiloxane has the following structure: # imgabs0 #, wherein a / (a + b) is equal to 90%-99%; the phenylboronic acid derivative comprises one or more of 2-formyl phenylboronic acid, 4-formyl phenylboronic acid, 2-carboxyl phenylboronic acid and 4-carboxyl phenylboronic acid; the metal salt is used for providing metal ions, and the metal ions comprise one or more of Fe < 2 + >, Fe < 3 + > and Zn < 2 + >.

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.

The invention mainly relates to the field of organosilicone chemistry, the field of daily chemicals and the field of high polymer materials, in particular to an organosilicone elastomer and a preparation method thereof. Comprising the following components: a side chain, divinyl terminated polysiloxane, hyaluronic acid modified single-ended vinyl polysiloxane, phenyl modified vinyl polysiloxane, a carrier fluid and a catalyst for hydrosilylation, a phenyl chain segment is introduced on the basis of a conventional elastomer net structure, so that the compatibility with various personal care components and active components is improved. In addition, hyaluronic acid, which is an excellent natural moisturizing factor, is introduced to improve the moisturizing performance of the organic silicon elastomer, so that the aim of moisturizing the skin is fulfilled. Meanwhile, the preparation method is simple, and mass production is easy to realize.

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 relates to the technical field of organic silicon elastomers, and discloses a preparation method and equipment of high-brightness organic silicon elastomer gel, and the high-brightness organic silicon elastomer gel comprises the following components in parts by mass: 124 parts of hydrogen-containing silicone oil and 13 parts of vinyl MQ resin. According to the invention, polydimethylsiloxane and isoalkane in a certain mass ratio are used as carrier fluids, and the polydimethylsiloxane and the isoalkane act together, so that the obtained product has more excellent silky feeling, matte feeling, smearing spreadability and skin feeling durability, can provide lasting velvet-like smooth feeling for the product, can bring matte and soft-focus effects for the product, and can be used for preparing a soft-focus soft-focus product. According to the present invention, the product viscosity can be reduced, the refreshing non-greasy skin feeling can be provided for the product, the product can be used as the high transparent system, the good smearing spreading degree and the good water resistance can be provided, the thickening effect can be provided in the anhydrous formula and the water-in-oil formula, and the product stability can be improved.

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.

A cosmetic composition for providing a matte foundation may be provided, that includes a mattifying filler, a colorant, a hydrocarbon-based oil, a hydrocarbon-based emulsifier, water, and UV filter system consisting of an organic hydrophobic UV filter, an organic water-soluble UV filter, and an inorganic UV filter. The mattifying filler may consist of a silica aerogel and optionally a modified starch, amorphous silica, a 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 ultraviolet filters. The organic water-soluble ultraviolet filter may consist of 2-phenylbenzimidazole-5-sulfonic acid (PBSA), and the cosmetic composition may be free of other organic water-soluble ultraviolet filters. The inorganic UV filter may consist of UV-grade titanium dioxide, and the cosmetic composition may be free of other inorganic ultraviolet filters.

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.

The present invention relates to a method for treating a material comprising one or more silicone elastomers, the method comprising a step of decrosslinking the material in the presence of a metal catalyst and of a solvent selected from the group consisting of alcohols, carboxylic acids, esters, ethers, and mixtures thereof, resulting in the formation of a mixture comprising fragmented chains of silicone elastomer.

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