16 results about "Organic Silicon Compounds" patented technology

The application provides an alkali-activated cementitious composition and applications thereof. The alkali-activated cementitious composition of the application comprises a cementitious material, an alkali-activator and a retarder, wherein the retarder comprises one or more of the organic silicon compounds represented by the following formulae I-1 to I-4. The alkali-activated cementitious material prepared from the alkali-activated cementitious composition of the application not only has suitable initial and final setting times, but also has a higher compressive strength.

The application relates to a high-heat-flow-resistant flexible heat insulation material and a preparation method thereof, and relates to the field of heat insulation materials. The application adopts a coating combined with a calendering method to prepare an organic silicon compound of a mixed special functional additive on the surface of a high-temperature-resistant fiber cloth to form a hot surface layer flexible composite material. The hot surface layer material has large deformation capacity and high bearing capacity, can take away part of heat through ablation under high heat flow / high temperature, reduces the heat entering the material interior, improves the heat insulation effect, and has good waterproof performance. The special functional additive has high temperature resistance and low thermal conductivity, and can form a pinning effect to produce a thermal blocking effect on external heating. The inner layer is designed as a multi-layer flexible heat insulation material with high temperature resistance and different components, and the heat insulation effect can be further improved. Several layers are combined to obtain the high-heat-flow-resistant flexible heat insulation material through integrated forming.

The application relates to the technical field of electronic paste, and discloses a water-based copper composite conductive paste and a preparation method thereof. The water-based copper composite conductive paste contains the following components in mass fraction: a composite conductive phase 55-70%, a bonding phase 1-10%, potassium-based montmorillonite 1-10%, carboxymethyl cellulose 0.2-2.5%, a siliconizing agent 0.5-6%, a mineralizing agent 0.1-1%, polydimethylsiloxane 0.5-6%, a surfactant 0.3-3% and water 15-30%. The siliconizing agent is an organic silicon monomer and / or an organic silicon compound; and the composite conductive phase contains copper powder and a conductive reinforcing phase. The conductive paste uses water as a solvent, is green, environment-friendly and low in cost, only produces water vapor after solidification and sintering, and is discharged into the air through a pipeline without generating other toxic and harmful gases, thus not causing harm to the environment and not having negative effects on human health. Meanwhile, through the joint action of the raw material components, the obtained conductive paste has good oxidation resistance, suspension stability, rheological property, high-temperature stability and conductive performance, can be solidified at a low temperature, and can be used at a high temperature.

The application belongs to the technical field of organic silicon chemical synthesis, and relates to a preparation method of 1,3-dimethoxy-1,1,3,3-tetramethyldisiloxane. The method uses alkoxysilane monomer and polysiloxane as raw materials, and under the action of a catalyst, is reacted at 60-80 DEG C for 1-3 h, then is subjected to rectification separation after temperature rising, after recovery of low-boiling-point raw materials, a stable distillate at 138-140 DEG C is received under a reflux ratio of 3-6:1, and the product is obtained; the alkoxysilane monomer comprises dimethyldimethoxysilane, the low-boiling-point raw material is dimethyldimethoxysilane, and the polysiloxane comprises oligomeric dimethylsiloxane. The method is a reaction rectification one-step method, the steps are simple, no solvent is needed, the raw materials are low in price, widely sourced, and do not need to use expensive noble metal catalysts, and the specific proton acid and Lewis acid are combined to catalyze the rearrangement reaction, the product is easy to separate, the yield is high, and the method is convenient for popularization and application.

The application discloses silica particles and a preparation method thereof. The preparation method of the silica particles comprises the following steps: mixing fumed white carbon black and water to form a suspension; freezing the suspension into a solid state; and performing solid-liquid separation on the solid state after thawing to obtain a solid. The preparation method of the silica particles takes fumed white carbon black as raw material, and compresses the fumed white carbon black into dense large particles through a freezing step. The method of the application does not involve chemical reaction, the process is controllable and no impurities are introduced, and high-purity silica particles can be prepared. Moreover, the application takes fumed white carbon black as raw material, and the cost is lower than that of an organic silicon compound; and the reaction condition is simpler and more controllable, and the operation is more convenient, so that the method is suitable for large-scale industrial production.

The present invention is an alkenyl group-containing cyclic siloxane derivative, which is characterized by being an addition reaction product of (i) an organic silicon compound represented by general formula (1) and (ii) an alkenyl group-containing cyclic siloxane represented by general formula (2). Due to this configuration, provided is an organic modified silicone that excels in safety and simple production steps, has low viscosity, and, when used in a curable composition, provides a cured product that has excellent hardness and permeability of light in a short-wavelength range.

The present invention aims to obtain a modifier suitable for obtaining a lubricating oil, a paint, an adhesive, or the like, which generates less particles and has more excellent smoothness, and to obtain a rubber composition for tires suitable for obtaining a tire having both excellent braking performance and fuel consumption performance. The present invention relates to a silicone compound graft copolymer (X) characterized by containing a main chain portion from an ethylene-α-olefin copolymer (A) and a graft portion from an organic silicon compound (B) containing one or more unsaturated groups, and a rubber composition for tires characterized by containing the silicone compound graft copolymer (X) in a range of 1 to 30 parts by mass with respect to 100 parts by mass of a diene-based rubber containing an aromatic vinyl-conjugated diene copolymer rubber.

This invention discloses a method and apparatus for synthesizing phenyltrichlorosilane via a trichlorosilane α-elimination mechanism in the field of organosilicon chemistry. Using silica-supported nickel, copper, or other metals as catalysts, chlorobenzene and trichlorosilane are mixed and subjected to a gas-phase thermal condensation reaction. Through the synergistic effect of the catalyst and initiator, the α-elimination of trichlorosilane is promoted to generate a dichlorosilane carbene intermediate, improving reaction efficiency. In this invention, the single-pass yield of phenyltrichlorosilane is increased from 65% in the traditional process to over 85%, reaching a maximum of 92%. The reaction temperature is reduced to 450-550℃, significantly reducing energy consumption. Carbon deposition is suppressed, extending the operating cycle of the apparatus. The raw material cost is low, and existing production lines can be directly modified, making it highly valuable for industrialization.

The present application provides an application of an organic silicon compound as a retarding agent for oil well cement or in the preparation of oil well cement, wherein the organic silicon compound comprises one or more of the structures shown in the following formulae I-1 to I-4. The organic silicon compound of the present application can be used as a retarding agent for the preparation of oil well cement, and the oil well cement prepared at high temperature not only has suitable initial and final setting times, but also has high compressive strength.

The application relates to the technical field of inorganic chemistry and catalytic chemistry, and discloses a titanium-silicon molecular sieve, a preparation method and application thereof, wherein the method comprises the following steps: (1) mixing a silicon source, an alkaline template agent, a titanium source and water to obtain a titanium-silicon precursor; (2) mixing the titanium-silicon precursor with an organic silicon compound shown in formula (I) to obtain a mixture; (3) microwave heating the mixture to crystallize the mixture, separating a solid from a crystallization product, and then drying and calcining the solid. In the preparation method, the titanium-silicon precursor is treated by using a specific organic silicon compound, and a microwave heating synthesis condition is used, so that a titanium-silicon molecular sieve in which almost all titanium atoms in raw materials are inserted into a molecular sieve skeleton is prepared, the selectivity and catalytic activity of the titanium-silicon molecular sieve in a catalytic reaction are improved, and the titanium-silicon molecular sieve has high selectivity and high catalytic activity.

This invention belongs to the field of organosilicon chemical synthesis technology, and discloses a segmented preparation method for low-cyclic polysiloxanes and a segmented polymerization reactor. The method includes: raw material pretreatment, segmented polymerization reaction, termination and purification, and post-treatment. The segmented polymerization reaction is carried out in an integrated segmented polymerization reactor, and includes, in sequence: 1) initiation of polycondensation under ultrasonic action; 2) end-capping polymerization under high shear action; 3) homogenization reaction under thermal equilibrium conditions. The segmented polymerization reactor integrates an ultrasonic dispersion reaction zone, a high-shear polymerization reaction zone, and a thermal equilibrium adjustment zone from top to bottom. Compared with the prior art, this invention effectively reduces the cyclic content and metal ion residue in the product through segmented reaction and refined control, improves product purity, uniformity of molecular weight distribution, and reaction efficiency, and is suitable for the continuous production of high-quality polysiloxanes.

The application discloses a UV-coated steel plate with good corrosion resistance and processing performance, which comprises a plated steel plate, at least one surface of the plated steel plate is provided with a UV coating, and the UV coating contains the following effective components: 40-55 parts by weight of a composite resin A; the composite resin A comprises aliphatic polyurethane acrylate oligomer A1 containing 15-25 wt% acrylate monomers with unsaturated double bonds and amine-modified epoxy diacrylate oligomer A2 containing 25-35 wt% acrylate monomers with unsaturated double bonds; 5-12 parts by weight of an organic silicon compound B; 12-22 parts by weight of a monofunctional alkenyl unsaturated polymerizable monomer C; 4-13 parts by weight of an acrylic phosphate ester compound D; 0.5-3 parts by weight of a titanium salt or zirconium salt compound E of an acrylic acid group; and 6-10 parts by weight of a UV photoinitiator F. The application further discloses a manufacturing method of the UV-coated steel plate with good corrosion resistance and processing performance and a UV coating for the plated steel plate.

This invention relates to the fields of organosilicon chemistry and surfactant technology, specifically to a dumbbell-shaped phosphate ester anionic organosilicon surfactant and its preparation method. It can be used in particle dispersion, wetting and emulsification, low surface tension regulation, inorganic filler slurry stabilization, and dispersion systems for coatings, inks, lithium battery pastes, and functional materials. This surfactant consists of a dumbbell-shaped backbone formed by two 1,3,5,7-tetramethylcyclotetrasiloxane residues linked by an intermediate chain segment R. Each cyclic end group is site-fixed to three polyether phosphate monoester salt arms Q. Its preparation includes a first hydrosilylation to construct a hydrogen-containing dumbbell intermediate, a second hydrosilylation to introduce polyether hydroxyl arms, and segmented phosphate esterification, hydrolysis, and neutralization steps. This invention features a regular structure, rich anchoring sites, and strong steric hindrance effect, which can improve the wetting, dispersion, and storage stability of inorganic particles, pigments, fillers, and lithium battery pastes.

Provided is a carbon dioxide gas adsorbent composition comprising: (A) an organic silicon compound having, for example, an average structure represented by formula (1) and having, per molecule, an amino group, and an alkoxysilyl group or a silanol group or both thereof; and (B) a solvent. (In the formula, A1 and A2 each represent a divalent hydrocarbon group having 1-20 carbon atoms, m represents a number of 0-4, R1 represents a monovalent hydrocarbon group having 1-10 carbon atoms, R2 represents a hydrogen atom or an alkyl group having 1-10 carbon atoms, and a-h represent numbers satisfying a≥0, b≥0, c≥0, d≥0, e≥0, f≥0, g≥0, h>0, and a+b+c>0.)

The application discloses a flexible sensor for eyelid pressure measurement and a preparation method thereof, and relates to the field of eyelid pressure measurement. The flexible sensor comprises a first organic silicon compound layer, a middle layer and a second organic silicon compound layer from top to bottom. The middle layer comprises a center electrode, a first wire, a first wire group, a piezoresistive unit group, an electric field receiving electrode group and a second wire group. One part of the first wire is connected with one end of the piezoresistive unit group and the center electrode, and the other part of the first wire is connected with the other end of the piezoresistive unit. The center electrode, the electric field receiving electrode group, the first wire, the first wire group and the second wire group are all conductive films with metal sputtered on the surface, and the piezoresistive unit group is a conductive film without sputtering metal. The second organic silicon compound layer is provided with a pit at the position in contact with the piezoresistive unit group. The above sensor can realize high sensitivity, high comfort and convenient and fast measurement of the eyelid pressure.

The application provides a kind of organic silicon compound containing imide bond, the organic silicon compound containing imide bond has as shown in formula (I), formula (II) or formula (III) structure.The organic silicon compound containing imide bond designed by the application can be obtained only by condensation reaction and other steps, which is used as the fatty amine curing agent of epoxy resin and the epoxy resin diluent with adjustable functionality, and then a high toughness and high temperature resistant epoxy resin is obtained.The various epoxy resin curing agents and epoxy resin diluents containing organic silicon and containing imide bond provided by the application are convenient in synthesis method, the types of synthesized epoxy resin are rich, and the organic silicon modified epoxy resin prepared by the application is adjustable in viscosity, excellent in mechanical property, high in temperature resistance grade, and suitable for metal soft magnetic composite insulation coating and other working scenarios.