48 results about "Silicone matrix" patented technology

The apparatus of the present invention is generally characterized by a heating / inflation module having pressurizable interior and an attached heat curable pre-preg. In particular, an elastomeric, seamless composite is provided that includes a heating element disposed within a thermoset resin matrix. The composite adapted to maintain a consistent temperature profile and an internal air pressure. A first end piece is attached to a first end of the composite and has an air port for communication with a compressed air source, a vacuum port for communication with a vacuum supply source and at least one electrical cable port for communication with a power supply source. A second end piece attached to a second end of the composite. The apparatus further includes a pre-preg removably attached to an outer surface of the composite. The pre-preg includes a structural fiber matrix supporting a heat curable resin. The composite is constructed by applying a liquid silicone matrix to at least one layer of braided or wound and / or tape fibers, wherein a portion of the fibers are electrically conductive. The layer of braided fibers is introduced into a mold, and a removable, expandable inner bladder is then loaded into the mold. The inner bladder is inflated to conform the layer of braided fibers to an interior surface of the mold. An electric current is caused to flow to the conductive fibers to cure the silicone matrix into a stable, elastomeric state. The composite is removed from the mold. A method for repairing a damaged section of a conduit is also disclosed.

A green product for use in fabricating a ceramic article comprises a ceramic powder immobilized within a silicone matrix, wherein the silicone matrix comprises one or more cross linked or polymerized silicone monomers and / or oligomers, wherein the one or more cross linked or polymerized silicone monomers and / or oligomers have a alkenyl reactive functional group and a hydride reactive functional group. Processes for forming a green product and a ceramic core with the silicone monomers and / or oligomers are also disclosed.

In various embodiments, a recording medium comprises an oleophilic substrate and, thereover, a topmost oleophobic layer comprising a cured polymeric silicone matrix that consists essentially of the addition-cure reaction product of a vinyl-functional polydialkylsiloxane and a silane cross-linking agent. The vinyl-functional polydialkylsiloxane has a molecular weight ranging from 30,000 to 75,000 or 110,000 to 130,000. If the molecular weight of the vinyl-functional polydialkylsiloxane is within the range of 30,000 to 75,000, the molar ratio of silane groups to vinyl groups is within the range of about 11:1 to about 25:1; and if the molecular weight of the vinyl-functional polydialkylsiloxane is within the range of 110,000 to 130,000, the molar ratio of silane groups to vinyl groups is from about 5:1 to about 27:1. The recording medium may be used as a lithographic printing plate.

A conducting silicone matrix incorporating a suspension of a drug in ionized and non-ionized phases in an emulsion of a hydrophobic polymer. In one version, the drug is prepared as a concentrated aqueous suspension incorporated in a silicone matrix with a silicone surfactant. An electrolyte may be incorporated into the silicone matrix for increasing its conductivity. When a current is applied, the drug in individual globules in the drug suspension migrates away from the electrode and becomes concentrated at the distal side of the globules eventually resulting in an increase in the drug concentration distal to the electrode and adjacent to the skin and thereby resulting in transfer of the active drug through the skin. This system provides a matrix with minimal electroendosmotic flow that is current efficient and provides a drug reservoir that can last for several days during application of the drug.

The present invention relates to topical compositions containing solid particles that are stabilized via encapsulation into a cross-linked silicone matrix. The solid particles are preferably formed of a metal oxide, such as zinc oxide or titanium dioxide, and the cross-linked silicone matrix is preferably formed by cross-linking a silicone having branched reactive alkoxyl moieties in the presence of a stannous carboxylate cross-linking agent. The stabilized particles of the present invention can readily be used either alone or in combination with other skin care actives to form topical compositions with improved stability and performance.

An injection port assembly for a tissue expander and / or mammary prosthesis comprising a composite silicone matrix having embedded fiber layers. The composite matrix materials may cover or extend from the outside perimeter of the injection port assembly and provide self sealing polymeric materials if punctured by a needle. The tissue expander and injection port assemblies and structures may be formed of MR scannable materials. The injection port structures may have palpation lumps for locating the injection port structure subsequent implantation. The injection port structure may be remotely located from the tissue expander and connected thereto via tubing.

The present invention relates to topical compositions containing solid particles that are stabilized via encapsulation into a cross-linked silicone matrix. The stabilized particles possess an electrical potential sufficient to prevent the particles from penetrating into the skin. The particles can readily be used either alone or in combination with other skin care actives to form topical compositions with improved stability and performance.

A method for forming a silicone hydrogel contact lens is disclosed, wherein a lens body is formed by curing a mixture of silicone lens matrix, including a filling material, which is water soluble or organic solvent soluble. The lens body, once formed, is processed by water or organic solvent extraction to remove part or whole filling material from the silicone matrix of the lens body. Whereby densely distributed and interconnected pores are formed in the lens body to provide additional wettability required for the contract lens. This method is also applicable of to making other optical medical devices, such as an intraocular lens.

The invention provides a preparation method of a light-emitting film based on chlorine-doped graphene quantum dots and belongs to the technical field of light-emitting materials. The preparation method of the light-emitting film based on the chlorine-doped graphene quantum dots is characterized in that the chlorine-doped graphene quantum dots prepared by adopting a hydrothermal method are bound with a silicon resin matrix together, on one hand, silicon resin serves as a dispersing medium of the chlorine-doped graphene quantum dots to prevent agglomeration and fluorescence quenching of the graphene quantum dots, and on the other hand, mechanical properties and chemical stability are provided for the light-emitting film. The prepared light-emitting film has better transparency, heat stability and high luminous intensity and is suitable for ultraviolet excited white-light LED.

A composite structure comprising a fabric layer encapsulated in a silicone polymer or silicone rubber matrix. The fabric layer preferably comprises a woven fabric that includes apertures through which silicone polymer may penetrate during fabrication to provide complete or virtually complete encapsulation thereof in the silicone matrix Because of the method of fabrication, the fabric layer resides closer to one surface of the composite structure so that its esthetic design can be seen from at least one surface of the composite structure. Relatively heat resistant fabrics such as cotton and Nomex® are specifically preferred as the fabric portion, however, Teflon® coated fibers of other woven materials may also provide preferred structures. The incorporation of a thermally insulating ceramic into the silicone matrix further enhances the thermal insulating properties of the composite.

A skin compatible component attachable to mammalian skin. The component is formed as a silicone matrix comprising a polyorganosiloxane derived silicone polymer and moisture control particulate distributed within the polymer network being configured to absorb moisture from the skin. The skin compatible component may be utilised as an ostomy wafer or flange to secure an ostomy appliance to the skin and in particular peri-skin.

The invention relates to an abradable material composition comprising a resin-based matrix, in particular a silicone matrix together with filler comprising hollow beads. In characteristic manner, the hollow beads withstand high temperatures and are made of refractory material. The hollow beads are preferably made of an alumino-silicate material. The composition is applicable to making abradable coverings for compressor casings, in particular casings for compressors of the low pressure type or of the booster type, or for a fan, the covering being in register with moving blades.

A method for improving the thermal barrier properties of silicone resin / glass fiber composites. Composites comprising a layer of polysiloxane (silicone resin) matrix with a glass or quartz fiber reinforcement embedded in such matrix and an organic polymeric layer were subjected to multi-cycle heat treatment, preferably with quartz lamps. The polysiloxane layer was pre-coated with graphite dispersion in order to ensure acceptable optical receptivity of the polysiloxane layer. As a result, the silicone resin was converted into a thick porous layer of silicone dioxide, the latter having the improved thermal barrier properties.

The invention discloses a preparation method of a high heat conduction composite silicone gasket. The preparation method comprises the following steps: sieving spherical alumina particles; sintering the spherical alumina particles; grinding methylsilicone oil, polysiloxane, silicon dioxide, methylvinyl silicone rubber and a silane coupling agent; stirring; vacuumizing; and vulcanization molding and the like. Compared with the prior art, the high heat conduction composite silicone gasket disclosed by the invention has the advantages that silicone components are reasonably proportioned, and thespherical alumina particles are sieved, so that the alumina particles are reasonably distributed in a silicone matrix and the heat conductivity coefficient of the alumina particles is improved; the silicone gasket disclosed by the invention has high insulating property; and in addition, the heat conductivity coefficient of the silicone gasket is improved to 6.0 W or above which is out of reach bythe prior art.

A fiber-reinforced silicone matrix resin matrix with higher resistance to delamination is created by incorporating a silicone resin of a different toughness and lower modulus than the matrix resin between each fiber layer of the composite. composite materials. Preferably, a glass or carbon fiber woven mat impregnated with a predetermined silicone matrix resin is coated with a precursor to a tougher filled layer silicone. The resulting stack of alternating layers of resin-fiber layers and tougher silicone-filled layers provides a tougher silicone-based composite.

The invention belongs to the field of molecular biology and mainly relates to a universal kit and method for extracting DNA from trace plant materials. The yield of DNA extracted once through the kit and the method can completely meet the requirement of direct whole genome sequencing. The kit and the method mainly comprise a thin silicon matrix adsorption column capable of adsorbing genome DNA to the maximum extent and a unique extraction buffering liquid system which is matched with the silicone matrix adsorption column and can extract various plant tissues and DNA in different parts of plants to the maximum extent. The kit and the method have the advantages of rapidness, convenience, no need of phenol-chloroform extraction, avoidance of organic solvent pollution and the like, and pigments, grease and other impurities in the DNA extraction process can be simply and conveniently removed to the maximum extent due to the thin adsorption column. Valuable plant samples are saved, and pretreatment steps and time of whole genome sequencing are greatly reduced and shortened.

The invention discloses a formaldehyde-removing coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 18.35 to 21.25 parts of deionized water, 8.3 to 12.5 parts of calcium carbonate, 15.3 to 30.6 parts of diatomite, 10.1 to 20.4 parts of toned titanium dioxide, 0.8 to 1.2 parts of an anti-freezing and thawing stabilizer, 0.2 to 0.6 partof a defoaming agent, 0.08 to 0.4 part of a silicone matrix conditioner, 0.9 to 4.5 parts of rheology modifier, 25.1 to 36.6 parts of special emulsion for self-crosslinking and 0.8 to 1.9 parts of rest components; the special emulsion for self-crosslinking is prepared from pure acrylic acid and a reactant for reacting with formaldehyde, wherein the mixing weight ratio of the pure acrylic acid tothe reactant is (2.72 to 3.92) : 1; the rest components include a dispersing agent, a wetting agent and a bactericide. The formaldehyde-removing coating disclosed by the invention has an effect of effectively absorbing and decomposing formaldehyde.

The invention discloses a high-toughness and high heat conduction composite silicone gasket. The high-toughness and high heat conduction composite silicone gasket is prepared from the following components in parts by weight: 400 to 600 parts of alumina particles, 120 to 180 parts of dimethicone, 10 to 20 parts of polysiloxane, 1 to 8 parts of MQ silicon resin, 5 to 15 parts of methylvinyl siliconerubber, 3 to 8 parts of a silane coupling agent, 3 to 12 parts of a silica reinforcement agent, 1 to 3 parts of a catalyst and 0.3 to 0.8 part of an inhibitor. Compared with the prior art, the high-toughness and high heat conduction composite silicone gasket disclosed by the invention has the advantages that silicone components are reasonably proportioned, and the spherical alumina particles aresieved, so that the alumina particles are reasonably distributed in a silicone matrix and the heat conductivity coefficient of the alumina particles is improved; the silicone gasket disclosed by the invention has high insulating property; and in addition, the heat conductivity coefficient of the silicone gasket is improved to 6.0 W or above, which is out of reach by the prior art. Besides, the silicone gasket disclosed by the invention has superstrong toughness and can still keep higher toughness and strength in the preparation process of sheets.

The disclosure is directed to a silicone article. The silicone article includes a silicone composition, the silicone composition including a silicone matrix component, a fumed silica filler; and a vinyl-terminated silicone polymer having a viscosity of about 500 centipoise to about 5000 centipoise, wherein the silicone article has a turbidity of less than about 0.3 nephelometric turbidity units (NTU). The disclosure is further directed to a tube and to a method of forming the article.

The invention discloses a high thermal conductivity composite silicone gasket. The high thermal conductivity composite silicone gasket is prepared from the following components in parts by weight: 400to 600 parts of alumina particles, 150 to 220 parts of methyl silicone oil, 10 to 20 parts of polysiloxane, 15 to 25 parts of silica, 5 to 15 parts of methyl vinyl silicone rubber, 3 to 8 parts of asilane coupling agent, 1 to 3 parts of a catalyst and 0.3 to 0.8 part of an inhibitor. Compared with the prior art, the high thermal conductivity composite silicone gasket disclosed by the invention has the advantages that silicone components are reasonably proportioned and the spherical alumina particles are screened, so that the alumina particles are reasonably distributed in a silicone matrix and the heat conductivity coefficient of the alumina particles is improved; and the silicone gasket has high insulating property and the heat conductivity coefficient is improved to 6.0 W or above which is out the reach by the prior art.

The invention discloses a photocurable liquid silicone rubber catalyst with a high dispersibility, and a preparation method thereof. The preparation method of the catalyst comprises the following steps: S1, reacting chloroplatinic acid, used as a platinum source, with a strong alkali at a temperature of 80-100 DEG C to obtain a metal hexahydroxyplatinate; S2, reducing tetravalent platinum in the metal hexahydroxyplatinate into divalent platinum, coordinating the divalent platinum with silane-functionalized acetylacetone, performing stirring and refluxing for 3-12 h to suspend solid powder in a solution; and S3, filtering the solid powder suspended in the solution, washes the solid powder with water multiple times, and drying the solid powder at a temperature of 50-70 DEG C to obtain the catalyst for photocuring. The problems of poor dispersibility in a silicone matrix and high consumption of existing catalysts are effectively solved.

The invention discloses an electronic equipment silica gel key. The electronic equipment silica gel key comprises a silica gel key basal body, wherein the silica gel key basal body is covered with a PET layer; a map layer is arranged on the surface, opposite to the silica gel key basal body, of the PET layer; the thickness of the PET layer is 0.5 to 0.6 mm; the thickness of the PET layer is 0.07 mm; and the thickness of the silica gel key basal body is 3.6 to 3.7 mm. The electronic equipment silica gel key has the beneficial effects that the electronic equipment silica gel key is manufacturedby adopting a PET material to be connected with the silica gel key basal body together; and compared with a pure silica gel key, the electronic equipment silica gel key has relatively high anti-staticand wear-resistant performances, the occurrence of the phenomena that the pure silica gel key is easy to adsorb impurities such as dust due to electrostatic interaction and is easy to wear is avoided, the safety of the silica gel key is improved, and the service life of the silica gel key is prolonged.

A skin compatible component attachable to mammalian skin. The component is formed as a foamed silicone matrix comprising a polyorganosiloxane derived silicone polymer and moisture control particulate distributed within the polymer network being configured to absorb moisture from the skin. The foamed skin compatible component may be utilised as an ostomy wafer or flange to secure an ostomy appliance to the skin and in particular peristomal skin.

A skin compatible component attachable to mammalian skin. The component is formed as a silicone matrix comprising a polyorganosiloxane derived silicone polymer and a moisture control particulate and permeability modifying polymer distributed within the polymer network. The skin compatible component may be utilised as an ostomy wafer or flange to secure an ostomy appliance to the skin and in particular peri-stomal skin.