577 results about "Silazane" patented technology

A method of forming a dielectric film includes: introducing a source gas essentially constituted by Si, N, H, and optionally C and having at least one bond selected from Si—N, Si—Si, and Si—H into a reaction chamber where a substrate is placed; depositing a silazane-based film essentially constituted by Si, N, H, and optionally C on the substrate by plasma reaction at −50° C. to 50° C., wherein the film is free of exposure of a solvent constituted essentially by C, H, and optionally O; and heat-treating the silazane-based film on the substrate in a heat-treating chamber while introducing an oxygen-supplying source into the heat-treating chamber to release C from the film and increase Si—O bonds in the film.

A method of forming a dielectric film, includes: introducing a siloxane gas essentially constituted by Si, O, C, and H and a silazane gas essentially constituted by Si, N, H, and optionally C into a reaction chamber where a substrate is placed; depositing a siloxane-based film including Si—N bonds on the substrate by plasma reaction; and annealing the siloxane-based film on the substrate in an annealing chamber to remove Si—N bonds from the film.

A method for low-temperature plasma-enhanced chemical vapor deposition of a silicon-nitrogen-containing film on a substrate. The method includes providing a substrate in a process chamber, exciting a reactant gas in a remote plasma source, thereafter mixing the excited reactant gas with a silazane precursor gas, and depositing a silicon-nitrogen-containing film on the substrate from the excited gas mixture in a chemical vapor deposition process. In one embodiment of the invention, the reactant gas can contain a nitrogen-containing gas to deposit a SiCNH film. In another embodiment of the invention, the reactant gas can contain an oxygen-containing gas to deposit a SiCNOH film.

The invention discloses a thermal-insulation coating by taking hydrophobic silicon dioxide aerogel microspheres as thermal-insulation packing. The coating is prepared by the following main steps: preparing the hydrophobic silicon dioxide aerogel microspheres; and mixing the prepared hydrophobic silicon dioxide aerogel microspheres and a polymer emulsion to prepare the thermal-insulation coating. Hydrophobic modification of the silicon dioxide aerogel microspheres includes the following two modes: in one mode, silicon dioxide wet-gel microspheres are modified by adopting halogenated hydrocarbon and in the other mode, alkoxy silane, silazane or siloxane is added into a mixed solution in a sol preparing stage. When the coating is prepared, a surfactant is added, so that the compatibility between the hydrophobic silicon dioxide aerogel microspheres and the polymer emulsion can be improved, the dispersibility of the microspheres in the coating can be improved, the coating quality can be improved, and the thermal-insulation performance of the coating can be improved.

The invention discloses electrolyte solution of a manganic acid lithium battery. The electrolyte solution comprises lithium salt, non-aqueous organic solvent, film-forming additive and stabilizing additive, namely seven-methyl two-silazane. Because the stabilizing additive, seven-methyl two-silazane is added into the electrolyte solution, the acidity of the electrolyte solution can be controlled. The cycle life and the high temperature storage performance of a lithium ion battery can be improved by using the electrolyte solution to prepare a battery.

The invention relates to a method for modifying a TS-1 titanium-silicon molecular sieve catalyst, which mainly solves the problems that a silanization reagent is easy to hydrolyze to cover the active center of the catalyst and has large consumption, difficult recovery and environmental pollution when being used for processing the TS-1 molecular sieve catalyst in a dipping mode in the prior art. The method better solves the problem by adopting the technical scheme that a TS-1 titanium-silicon molecular sieve catalyst matrix reacts for 0.5-10 hours by leading into the silanization reagent at 50-300 DEG C in a nitrogen atmosphere, and then a modified TS-1 titanium-silicon molecular sieve catalyst is obtained, wherein the silanization reagent is selected from organosilane, organic silylamine, organic silicyl amide or organic silazane, and the dosage of the silanization reagent is 2-20 percent of the weight of the catalyst matrix. The method can be applied to the industrial production of epoxy chloropropane.

A block copolymer, preferably a block copolymer such as poly(isoprene-block-ethylene oxide), PI-b-PEO, is used as a structure directing agent for a polymer derived ceramic (PDC) precursor, preferably a silazane, most preferably a silazane commercially known as Ceraset. The PDC precursor is preferably polymerized after mixing with the block copolymer to form a nanostructured composite material. Through further heating steps, the nanostructured composite material can be transformed into a nanostructured non-oxide ceramic material, preferably a high temperature SiCN or SiC material.

The invention includes methods of forming layers conformally over undulating surface topographies associated with semiconductor substrates. The undulating surface topographies can first be exposed to one or more of titanium oxide, neodymium oxide, yttrium oxide, zirconium oxide and vanadium oxide to treat the surfaces, and can be subsequently exposed to a material that forms a layer conformally along the treated surfaces. The material can, for example, comprise one or both of aluminum silane and aluminum silazane. The invention also includes semiconductor constructions having conformal layers formed over liners containing one or more of titanium oxide, yttrium oxide, zirconium oxide and vanadium oxide.

A process for producing a hydrophobic silica powder, comprises the steps for hydrophobic treatment of: adding to an aqueous silica sol containing hydrophilic colloidal silica having a specific surface area of 5.5 to 550 m²/g, a disilazane compound represented by formula (1)

(R¹₃Si)₂NH  (1)

wherein each R¹ is C_1-6alkyl group or phenyl group that is selected independently of one another, in an amount of 0.1 to 10 mmol per surface area 100 m² of the hydrophilic colloidal silica, to obtain a first mixture of the aqueous silica sol and the disilazane compound; and heating the mixture at a temperature of 50 to 100° C. for aging it to obtain a slurry as dispersion of hydrophobic treated colloidal silica. The process provides a hydrophobic silica powder through a simple hydrophobic treatment step.

The invention belongs to the technical field of silicone rubber and particularly relates to double-component addition-type liquid silicone rubber as well as a preparation method of same. The liquid silicone rubber is prepared by mixing, curing and shaping a component A and a component B, wherein the component A includes 100 parts of basic rubber, 8-18 parts of vinyl-terminated silicone oil, 1-2 parts of a tackifier, and 0.5 parts of a platinum catalyst; the component B includes: 20-70 parts of vinyl-terminated silicone oil, 30-80 parts of hydrogen-containing silicone oil, and 0.3-0.5 parts ofan inhibitor; the basic rubber includes 100 parts of vinyl-terminated silicone oil, 5-10 parts of vinyl-terminated silicone oil having side-chain vinyl group, 40 parts of fumed silica, 10-15 parts ofa silazane processing agent, and 0-5 parts of a siloxane processing agent. In the liquid silicone rubber, the components are cooperated and are matched in reasonable ratio, so that firmness of the liquid silicone rubber on surfaces of fabrics is improved, and tensile strength and tearing strength of the silicone rubber are increased; the silicone rubber is high in vulcanization speed and high in production efficiency. The invention also provides a preparation method of the double-component addition-type liquid silicone rubber. The method is optimized in process and has simple operations.

Novel N-alkyl substituted perhydridocyclic silazanes, oligomeric N-alkyl perhydridosilazane compounds, and N-alkylaminodihydridohalosilanes, and a method for their synthesis are provided. The novel compounds may be used to form high silicon nitride content films by thermal or plasma induced decomposition.

A stimulable phosphor adapted to convert incident radiation into visible light is formed on one surface of a substrate in a storage phosphor panel, wherein surfaces of phosphor and, optionally, the said substrate, are covered with a poly-paraxylylene film, whereas a film-forming silazane or siloxazane type polymeric compound covers the outermost surface of the poly-paraxylylene film on the phosphor side.

Surface-modified solids bearing groups of the formula I

SiR¹₂—R—NH₂  (I),

are prepared by reacting a solid having OH groups on a surface thereof with a cyclic silazane of the general formula II

where

• R is a divalent optionally substituted hydrocarbon radical optionally containing heteroatom containing groups, and
• R¹ is a hydrogen atom, or a monovalent optionally substituted hydrocarbon or hydrocarbonoxy group optionally containing heteroatom-containing groups. The surface-modified solids are preferably metal oxide particles. Such surface-modified particles are useful in numerous products.

The invention discloses a low temperature type lithium ion battery electrolyte with high temperature property and lithium ion battery. The electrolyte is made by uniformly mixing and confecting electrolytic salt, non-water organic solvent, alkali additive and film-forming additive, the electrolytic salt is mixed lithium salt made by uniformly mixing lithium tetrafluoroborate and lithium bis(oxalate)borate, and the mol ratio of the two is 96-73: 4-27, the concentration of the mixed lithium salt solution formed by the electrolytic salt and the non-water organic solvent is 0.8-1.2mol/L; the alkali additive is heptamethyldisilazane and the mass ratio of the hepatmethyldisilazane and the non-water organic solvent is 0.1-8%; the mass ratio of the film-forming additive and the non-water organic solvent is 0.1-5%; and the lithium ion battery comprises an anode, a cathode, a diaphragm and low temperature type lithium ion battery electrolyte with high temperature property. The invention has reasonable design, simple preparation method steps and convenient implementation, and the prepared electrolyte and lithium ion battery have favourable comprehensive performances.

A method for preparing the first component of a two-component room temperature-vulcanizable (RTV) silicone composition comprises (a) preparing a filler/oil masterbatch by (i) adding an unreactive silicone oil and untreated, aggregated filler particles to a mixer; (ii) adding a filler treating agent such as an organosilane, a polyorganosilane or a silazane to the unreactive silicone oil/filler mixture; and (iii) mixing the unreactive silicone oil/filler mixture and treating agent under conditions sufficient to breakdown the aggregated filler particles to an average size of less than about 300 nm for a time of less than about 24 hours to form the filler/oil masterbatch; and (b) adding said filler/oil masterbatch to a reactive silicone oil.

A silicon based coating composition for a wide range of surfaces, which composition is formed from a mixture of constituents comprising appropriate portions of silazane, siloxane, and silane, and optionally organic solvent and additives, and the composition results in a coating having a thickness between 0.1 and 1.5 mil, a hardness of 2-9H and a standard coefficient of friction between about 0.03 to about 0.04.

The invention relates to a method for producing epoxypropane through reaction between cumyl hydroperoxide and propylene, mainly aiming at solving the problems of low catalyst activity, low epoxypropane selectivity and poor reaction stability existing in the prior art. Reaction raw materials are in contact with catalyst to produce the epoxypropane by using the cumyl hydroperoxide and the propylene as the raw materials under the conditions that the molar ratio of the cumyl hydroperoxide to the propylene is 1:1 to 1:10, the reaction temperature is 50-100DEG C, the reaction pressure is 1-5MPa and the mass space velocity of the cumyl hydroperoxide is 1-30h<-1>. The catalyst is prepared by adopting a method which comprises the following steps of: a) evenly mixing organic silicon sources, inorganic silicon sources, titanium sources and organic templates with water, and filtering, water-washing, drying and roasting the product to obtain precursors I, wherein the inorganic silicon sources are selected from at least one of silica sol, silicate ester and solid silicon oxide, and the organic silicon sources are methyltrimethoxysilane; and b) by taking inert gas as carriers, feeding silanization agent into the precursors I for reaction to obtain the catalyst, wherein the silanization agent is selected from at least one of organic silane, organic silicylamine, organic silicylamide and organic silazane. By adopting the technical scheme, the problems are better solved and the method can be used for the industrial production of the epoxypropane.

An inorganic polysilazane resin of the present invention has a Si/N ratio (i.e. a ratio of contained silicon atoms to contained nitrogen atoms) of 1.30 or more. The inorganic polysilazane resin having such a high Si content can be produced by, for example, a method in which an inorganic polysilazane compound containing both Si—NH and Si—Cl is heated to react NH with Cl, a method in which a silazane oligomer (polymer) that leaves no Si—Cl bond is synthesized and a dihalosilane is added to the synthesized silazane oligomer (polymer) to perform a thermal reaction, and the like. A siliceous film can be formed by, for example, applying a coating composition containing the inorganic polysilazane resin onto a base plate and then dried and the dried product is then oxidized by bringing the dried product into contact with water vapor or hydrogen peroxide vapor and water vapor under heated conditions.