112 results about "Silicone products" patented technology

The invention provides high-hardness extruded silicone rubber composition. The silicone rubber takes methyl vinyl siloxane with the average molecular weight of 0.55-0.75 million and the average vinyl molar content of 0.4-0.55% as rubber master batch, and reinforced white carbon black, silica powder, a structurized control agent, vinyl-terminated methyl vinyl silicone oil, an internal releasing agent, an anti-yellowing agent, magnesium oxide and cerium oxide are added. The prepared silicone rubber has high hardness, high resilience, relatively high elongation and high tear resistance after high temperature vulcanization and can be applicable to silicone products such as an industrial rubber-covered roller, a pressing wheel, a sealing ring and a sealing element.

A curable silicone composition comprising: an alkenyl-containing organopolysiloxane (A) that contains: a dialkylpolysiloxane (A-1) having on average at least 2 alkenyl groups in one molecule having a 25° C. viscosity in the range of 5,000 to 35,000 mPa·s, and a alkenyl-containing organopolysiloxane resin (A-2) consisting of SiO_4/2 units, R¹₂R²SiO_1/2 units, and R¹₃SiO_1/2 units (where R¹ designates alkyl groups with 1 to 10 carbon atoms, and R² designates alkenyl groups) with the content of alkenyl groups ranging from 3.5 to 5.0 mass %, and with the ratio of the sum of the mole numbers of the R¹₂R²SiO_1/2 units and R¹₃SiO_1/2 units to 1 mole of the SiO_4/2 units in the range from 0.5 to 1.4; an organopolysiloxane (B), wherein silicon-bonded hydrogen atoms are in an amount of at least 0.7 mass %; and a hydrosilylation catalyst (C). The composition is capable of forming a flex-resistant highly transparent cured silicone product with non-tacky surface.

Belonging to the technical field of organic silicon products, the invention relates to a preparation method of polyether polyester modified silicone oil. Involving ester exchange reaction and condensation polymerization techniques, the method consists of: firstly adding dimethyl terephthalate, ethylene glycol and zinc acetate into a reaction container to undergo ester exchange reaction, adding ethylene terephthalate, antimony oxide and polyethylene oxide into a reaction container to undergo condensation polymerization so as to obtain a polyether polyester segmented copolymer; then terminal hydrogen-containing silicone oil, allyl glycidyl ether and a Pt catalyst are added into a reaction container to undergo heat preservation reaction, performing vacuum pumping to remove low-boiling-point substances; adding polyether amine and a solvent into terminal epoxy modified silicone oil to undergo reflux reaction, conducting pressure reduction to remove the solvent so as to obtain polyether amino modified silicone oil; and mixing the polyether polyester segmented copolymer and the polyether amino modified silicone oil evenly, and carrying out heat preservation reaction to obtain the polyether polyester modified silicone oil. The emulsion has good stability, is difficult to yellow and stick rolls. Also the use effect is better than that of compounding, and the tedious compounding procedure in the application process is omitted.

A silicone composition contains I) a shrink additive and II) a curable polyorganosiloxane composition. A method for fabricating an electronic device includes the steps of: 1) interposing the silicone composition between an IHS and a substrate, 2) curing the curable polyorganosiloxane composition to form a cured silicone product, and 3) removing the shrink additive during and/or after step 2), thereby compressing the IHS to the substrate. Compressing occurs as thickness of the cured silicone product decreases, as compared to thickness of the silicone composition interposed in step 1).

The invention relates to a self-crosslinking organosilicone heat-resistant coating capable of reaching good drying properties and excellent physical and chemical properties through a self-crosslinking reaction. The self-crosslinking organosilicone heat-resistant coating is characterized in that the coating is prepared from the following raw materials in parts by weight: 50-60 parts of modified organosilicone resins with a concentration not less than 60%, 0.3 part of dispersant BYK, 0.4 part of organic bentonite, 10-15 parts of pigment, 5-10 parts of mica powder with a particle size of 350-450meshes, 5-10 parts of precipitate barium sulfate with a particle size of 350-450 meshes, 5-10 parts of talc powder with a particle size of 350-450 meshes and 10-20 parts of xylene; and the coating can achieve good drying properties and excellent physical and chemical properties through a self-crosslinking reaction in a 25 DEG C environment. Through the coating, the shortcomings of the existing one-component organosilicone products are solved, the coating has good heat resistance, and simultaneously the coating layer formed by the coating has excellent mechanical strength and protective properties. The coating provided by the invention is adaptable to the decorative protection of large-sized heat-resistant components, the components coated by the coating can withstand the temperature of 450 DEG C for a long term and can withstand long-term UV (ultraviolet) exposure, and the coating layer is not damaged.

The invention relates to a gradient organic silicon heat-resisting coating which is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of no less than 65wt% epoxy modified organic silicon resin solution, 0.5 parts of dispersing agent BYK-110, 0.6 parts of organobentonite, 10-15 parts of dye, 3-5 parts of mica powder with the granularity of 350-450 meshes, 5-10 parts of precipitated barium sulphate with the granularity of 350-450 meshes, 5-10 parts of M-1 glass material, 5-8 parts of B-11 glass material, 5-10 parts of B-12 glass material and 5-10 parts of mixing solvent (the ratio of dimethylbenzene to butanol is 7:3), wherein the epoxy modified organic silicon resin solution is prepared from the following raw materials in parts by weight: 30-40 parts of E-20 epoxy resin, 50-60 parts of 65-70wt% organic silicon middle body, and 5-10 parts of dimethylbenzene. The coating can be used for solving the defects that the conventional organic silicon product is low in thermal resistance when being compared with an inorganic coating, and the coating has good thermal-resistance. The coating provided by the invention is applicable to decoration and protection of a large-sized thermal-resisting component, and the coated component can endure high temperature of 400-1,000 DEG C for long term.

The invention discloses an improved method for processing high-iron and high-magnesium a laterite and obtaining a hematite product. The method comprises the following steps of: dividing laterite ores into high-iron ores and high-magnesium ores; leaching the high-iron ore at a normal pressure and filtering to obtain leaching slag A for later use, putting leaching liquor B in a second leaching kettle; determining the addition of the high-magnesium ore, inputting water-based ore pulp in the second leaching kettle in batch, leaching at 120-180 DEG C; filtering the ore pulp discharged from the second leaching kettle, magnetically separating the obtained leaching slag C, wherein the magnetic part solid is collected as the hematite product, and the non-magnetic part solid and the leaching slag A are combined to be used for recycling silicone products; and sending the obtained leaching liquor D into a recovery process of nickel, cobalt, aluminum and magnesium. By the method, a high nickel-cobalt leaching rate is obtained, efficient separation of nickel-cobalt, iron and silicone is realized, and the hematite product is obtained; and moreover, acid consumption, energy consumption and equipment investment cost in a production process are low.

This invention discloses an oriented silicon steel insulation coating, which can be used to improve the performance of the laminated sheet . It has the composition weight percentage as follows: polyether-modified silicon oil, the water solution with 1% weight proportion, accounts for 0.01%-2.0%, of which the radio of hydrophilic chains to hydrophobic chains ranges from 20/80 to 100/0; aluminium dihydrogen phosphate 3%-24%, colloidal silica 4%~16%, chromic anhydride 0.15%~4.50% and the rest is water. After coated in the oriented electrical steel, the said insulation coating can remarkably enhance the laminated sheet times by the intrinsic lubricity of silicone during the machining of oriented silicon steel, and hence greatly enhance the production efficiency. Besides, due to the favorable water-solubility of the polyether-modified silicon oil and the common heat-resistance of the silicone products, the said coating is easily prepared, uniformly coated, and has good dispersibility. The coated surface is in good quality, able to endure sintering with high temperature without thermal degradation.

Filamentous bodies which are longitudinally extended and other film-like constructions are made by combining liquid siliceous precursors with air and extruding them. Distinct types or grades of fibers, strands, and other film-like constructions are produced which have a multiplicity of useful applications and indications for use owing to their inherent memory, compactability, tensile strength and density. Processes for making the novel enhanced filamentous bodies and products by the same can be optimized for uses ranging from safe and effective (“leak-free”) prosthetics to cushions, inserts, membranes, in a plurality of fields from consumer electronics to medical devices, and athletic or orthopedic shoe inserts.

A system for flavoring silicone products, such as baby bottle nipples and baby pacifiers, and a system for forming the flavored silicone products. Flavors, in the form of esters, are bond to Silicon (IV) Oxide, the resulting flavored intermediate is mixed into silicone, and the mixture is formed into a flavored product.

The invention relates to a double-component low-hardness silicone rubber and a preparation method thereof. The double-component low-hardness liquid silicone rubber comprises two components A and B, the mass ratio of A to B is 1:1, wherein the component A comprises 50-70 parts of vinyl-terminated organopolysiloxane with the viscosity of 5000-15000 mPa.s, 20-45 parts of fumed silica powder with the specific area of 200-380 m<2>/g, and 0.01-0.5 part of platinum catalyst; the component B comprises 50-70 parts of vinyl-terminated organopolysiloxane with the viscosity of 5000-15000 mPa.s, 20-45 parts of fumed silica powder with the specific area of 200-380 m<2>/g, 5-10 parts of polysiloxane with low hydrogen content of 0.05-0.2%, and 0.01-0.03 part of inhibitor. The prepared double-component low-hardness silicone rubber forms a soft elastic material after being vulcanized, is environmentally friendly, non-toxic, and good in simulation performance, and can be used to make flexible silicone products like the human body, insoles, non-slip mats and the like, in addition, the double-component low-hardness silicone rubber is high in tensile strength and tearing strength, and is suitable or the fields of electronics, automobiles, aviation and the like having requirements on complicated shape or high precision.

The invention relates to a silicone product supported with graphene titanium dioxide nano-silver tourmaline magnetic powder, belonging to the technical field of health care products. In the technicalscheme, 33 silicone products are provided. The technical scheme is as follows: the silicone product is characterized in that at least one functional material of graphene, titanium dioxide, nano-silver, tourmaline and magnetic powder is added into the 33 silicone products on line in the production process. The silicone products have effects of releasing far infrared rays, releasing negative oxygenions and resisting bacteria. The silicone product disclosed by the invention has the beneficial effects that the functional silicone product has an antibacterial function, a water purification function, an air purification function and electric heating and formaldehyde removing functions, brings convenience to people's life and brings health to the body of people. The silicone product disclosed bythe invention is low in production cost, high in practicality and convenient for large-scale popularization and has wide market prospects.

The invention relates to a high stability conductive elastomer for electromagnetic shielding. The high stability conductive elastomer comprises the following components: 100 parts by mass of siliconerubber, 100-400 parts by mass of conductive filler, 0-10 parts by mass of silicone oil, 0-10 parts by mass of graphene, 1-5 parts by mass of a silane coupling agent, 0.5-5 parts by mass of an internalreleasing agent, and 0.5-10 parts by mass of a crosslinking agent. The conductive elastomer prepared from the components has the advantages of high tensile strength, high elongation at break, low compressive deformation, low product cost and good shielding effectiveness, the tensile strength and elongation at break enable difficult pull-apart of the product in the assembly process and reusabilityof the product during reworking, the compressive deformation is low, and relative to pure electrically conductive silicone products, the product provided by the invention has low compressive deformation amount, so that the whole installation shell has good sealing performance and good shielding effectiveness, and the product cost is low. In addition, the invention also provides a preparation method of the high stability conductive elastomer for electromagnetic shielding.

A silicone resin composition, comprising (A) 100 parts by weight of an organopolysiloxane resin containing an average of greater than two alkenyl groups per molecule and having less than 1.5 mole percent of silicon-bonded hydroxy groups, (B) an organohydrogensilane in an amount sufficient to cure the composition, (C) an effective amount of an inorganic filler; and (D) a catalytic amount of a hydrosilylation catalyst. The present invention is further directed to a cured silicone product comprising a reaction product of the above-described composition. A cured silicone product comprising a reaction product of the silicone resin composition and a multi-part silicone composition comprising components (A) through (D) in two or more parts, provided components (A), (B), and (D) are not present in the same part.

The invention relates to a preparation method of an anti-aging silicone material for LED packaging, and belongs to the technical field of silicone products. Polyurethane is adopted to modify siliconerubber so as to obtain a raw material, and through combination with vinyl-terminated methylsilicone oil and a platinum catalyst, a rubber matrix is obtained through hydrosilylation; and the hydrogen-containing methylsilicone oil is adopted as a cross-linking agent, and vulcanization is performed so as to obtain the LED packaging anti-aging silicone material. The anti-aging silicone material has agood refractive index, aging resistance and good mechanical properties, and polyurethane has the advantages of high hardness, high strength, high elasticity, high wear resistance, tear resistance, aging resistance, ozone resistance, radiation resistance, good electrical conductivity and the like, and silicone rubber has excellent heat resistance, cold resistance, dielectric properties, ozone resistance, atmosphere aging resistance and other properties, so that after the silicone rubber is modified by using polyurethane, the tensile strength and tear strength of the modified silicone rubber areimproved, and the aging resistance is also improved.

The invention relates to a method for electrolytic synthesis of siloxane, belonging to the technical field of organosilicon chemistry. The method disclosed by the invention comprises the following steps of carrying out an electrolysis reaction on minerals containing SiO2 and an alkylating agent as raw materials at room temperature and normal pressure in an electrolyte solution comprising an aprotic polar organic solvent and an electrolyte by an electrolytic cell or an electrolytic bath with a cathode and an anode and synthesizing to obtain the silicone-containing materials, and finally the separating siloxane in the silicone-containing materials to obtain siloxane products. According to the method for electrolytic synthesis of siloxane, production costs and energy consumptions are greatly reduced, the production efficiency is improved; no pollution to the environment is generated and the synthesis process is environment friendly; a plurality of silicone products are obtained by flexibly choosing alkylating agents. The method disclosed by the invention has the advantages of high converted rate and product quality.

Filamentous bodies which are longitudinally extended and other film-like constructions are made by combining liquid siliceous precursors with air and extruding them. Distinct types or grades of fibers, strands, and other film-like constructions are produced which have a multiplicity of useful applications and indications for use owing to their inherent memory, compactability, tensile strength and density. A prosthetic device for a mastectomy bra is constructed with filamentous bodies. It can be sewn permanently into the bra cup. The device can be refilled to counteract volume loss.

A tape for securing an ultrasound probe to the skin may include a sonolucent silicone gel for transmitting ultrasound from an ultrasound transducer to the body. A method of manufacturing an adhesive silicone product may include a step of treating the adhesive composition or components of the composition to remove air or prevent the formation of air bubbles, in order to provide a sonolucent adhesive product.

The invention provides diatom ooze paint which can be used for efficiently purifying indoor air and has a good oil stain resistant effect. The paint is prepared from the following components in parts by weight: 15 to 20 parts of kieselguhr, 10 to 30 parts of fluorine modified organosilicone, 5 to 10 parts of acrylic emulsion, 1 to 5 parts of photocatalyst materials, 20 to 55 parts of fillers, 1 to 3 parts of thickeners, 0.3 to 0.5 part of defoamers, 0.3 to 0.7 part of wetting dispersant, 0.2 to 0.5 part of anti-mildew bactericide and 15 to 35 parts of water, wherein the fluorine modified organosilicone is a silicone product which is produced by German Wacker Chemical Co., Ltd., and the brand of the fluorine modified organosilicone is WACKER BS-38; the photocatalyst materials are photocatalyst which is produced by Guangdong Longhu Science and Technology Co., Ltd., and the brand of the photocatalyst materials is CLAUVIS P-10; the thickeners include hydroxyethyl cellulose, polyurethane thickeners and alkali swelling thickeners. The diatom ooze paint has the advantages of good decorative effect, low contamination and oil resistance, indoor toxic and harmful substances can be efficiently absorbed, and the excellent characteristics of the diatom ooze paint can be achieved to the maximum.

The invention discloses a fine simulation silicone product, a manufacturing process thereof and application in inscription rubbing. The method comprises the following steps of firstly, sampling fixing, secondly, inner mold making, thirdly, outer mold making, fourthly, demolding model finishing, fifthly, silicone simulation product making, and sixthly, silicone simulation product finishing. The method further comprises the steps of 7, making of a high-temperature-resisting mechanical dedicated mold heat conduction pressure resistance assembly, 8, high-temperature-resisting mechanical dedicatedmold making, and 9, obtaining of a silicone fine simulation finished product. The characteristic 100% natural texture of a real fish pattern master can reappear, the simulation degree is extremely high, the method is green and environment-friendly, saving and sanitation are achieved, the real fish is replaced for inscription rubbing, durability is achieved, and inscription rubbing use not lower than one million times is achieved, in the national gyotaku, the fish saving number is considerable, durability is achieved, the traditional solid inscription rubbing constraint is broken through, the method can be widely used for various plant roots and stem leaves, insects, shrimps and crabs, and fruits and vegetables, the traditional cultural popularization and inheriting can be facilitated, andthe market prospect is wide.