787 results about "Silicon oxygen" patented technology

Methods for forming silicon containing films using silylamine moieties are disclosed. In some embodiments, silylamine moieties are employed to deposit silicon-nitrogen, silicon-oxygen, or silicon-nitrogen-oxygen materials at temperatures of less than 550° C. In some embodiments methods are practiced within process chambers adapted to contain a single substrate as well as within process chambers adapted to contain a plurality of substrates, where the silylamine moieties are conveyed to the chambers in across flow type manner.

A method for providing a dielectric film having enhanced adhesion and stability. The method includes a post deposition treatment that densifies the film in a reducing atmosphere to enhance stability if the film is to be cured ex-situ. The densification generally takes place in a reducing environment while heating the substrate. The densification treatment is particularly suitable for silicon-oxygen-carbon low dielectric constant films that have been deposited at low temperature.

A method for depositing a low dielectric constant film having a dielectric constant of about 3.0 or less, preferably about 2.5 or less, is provided by using one or more cyclic organic precursors and one or more aliphatic precursors. In one aspect, a cyclic organosilicon compound, an aliphatic organosilicon, and an aliphatic hydrocarbon compound are reacted with an oxidizing gas at conditions sufficient to deposit a low dielectric constant film on the semiconductor substrate. The cyclic organosilicon compound includes at least one silicon-carbon bond. The aliphatic organosilicon compound includes a silicon-hydrogen bond or a silicon-oxygen bond.

The present invention relates to a method of tackling sea red tides and fresh water bloom using clay as algae flocculant. The effective component of the flocculant is hydrated magnesio-silicate salt in the laminated structure including upper and lower silicon-oxygen tetrahedron layers and sandwiched magnesium-oxygen octahedron layer. The hydrated magnesio-silicate salt is easy to prepare, low in cost and high in algae flocculating elimination effect.

The present invention provides a curable composition which comprises (A) a base-generating substance which generates a base when exposed to the action of ultraviolet light, (B) a siloxane polymer which has silicon-hydrogen bonds (Si-H) capable of reacting with hydroxy groups under the effect of the base to form silicon-oxygen bonds (Si-O) and hydrogen molecules (H2), and (C) an acid substance. This composition is cured by irradiation with ultraviolet light. During this ultraviolet irradiation, a mask is placed between a coating film of the composition and the radiation source, and the uncured portions of the composition are dissolved and removed so that a pattern is formed. The residual portions are then heated to produce a pattern-cured product.

The invention provides a preparation method of a silicon dioxide aerogel, which comprises the following steps: regulating the pH value of a silicasol to 4-10 with reducing acid, adding ethanol, heating, and keeping the temperature to obtain a wet gel; mixing the wet gel with ethyl orthosilicate and ethanol to carry out aging; and finally, mixing with a drying-control chemical additive, and drying to obtain the silicon dioxide aerogel. In the aging process, the active hydroxy groups and ethyl orthosilicate on the wet gel surface and the region with weak network skeleton structure react to reinforce the silicon-oxygen bridge bond and enhance the networking degree and strength of the gel skeleton, thereby reducing the shrinkage and cracking phenomena in the drying process. Atoms with large electronegativity and small radius in the drying-control chemical additive and SiOH on the colloidal particle surface form a hydrogen bond, thereby generating a wide shielding network on the periphery; polycondensation is also generated in the system under the action of the hydrogen bond, thereby reducing the polycondensation speed; and many branched chains are increased in the skeleton network structure formation process, thereby promoting the formation of large and uniform nanopores.

The invention provides a high-conductivity silicon-oxygen negative electrode material which comprises a silicon-based inner core and a coating layer formed on a surface of the silicon-based inner core. The coating layer comprises carbon and a fast ion conductor, and the fast ion conductor forms a complete ion transmission channel on the coating layer, is directly connected with the silicon-based inner core and extends to the surface of the coating layer. The fast ion conductor forms the complete ion channel in the coating layer so that the silicon-oxygen negative electrode material can give consideration to both electron conductivity and ion conductivity, meanwhile, an SEI film is stabilized, and a capacity and electrochemical performance of the material are effectively improved.

The invention relates to an inner surface coating technique of medicinal glass bottle, comprising the following steps: taking organosiloxane to prepare 2 to 10 wt% of dispersion solution by adding water; coating the solution to the inner surface of the medicinal glass bottle; then obtaining the finished product by heating and curing. The invention can connect a polymer film with a silicon-oxytetrahedron in the glass by dint of a common silicon-oxygen bond when the polymer film material is coated to the inner surface of the glass bottle; since the hydroxyl has certain orienting effect, a layer of compact polyorganosiloxane hydrophobic film in the inner surface of the glass bottle.

A semiconductor device includes a metal wiring provided on a semiconductor substrate. The device further includes an anti-metal diffusion film formed on the metal wiring, a buffer layer which is formed on the anti-metal diffusion film and includes at least a silicon-methyl radical bond and a silicon-oxygen bond, and a low-dielectric constant film layer which is formed on the buffer layer and includes at least the silicon-methyl radical bond and the silicon-oxygen bond, wherein the silicon-methyl radical bonding density of the buffer layer is less than the silicon-methyl radical bonding density of the low-dielectric constant film layer.

Provided are a proton-exchange membrane of which the ionic conductivity is high and the methanol crossover is low, and a fuel cell of high power that comprises the proton-exchange membrane. The proton-exchange membrane has a structure of mesogen-containing organic molecular chains and a proton-donating group-containing group covalent-bonding to a silicon-oxygen three-dimensional crosslinked matrix, in which at least a part of the organic molecular chains are oriented to form an aggregate thereof; and the fuel cell comprises the membrane.

The invention discloses a multistage nano-reactor catalyst for one-step direct preparation of aromatic hydrocarbons from synthetic gas, and a preparation method and an application thereof. The catalyst comprises a core layer iron-based Fischer-Tropsch catalyst, a porous oxide or porous carbon material transition layer and a molecular sieve shell layer having an aromatization function, wherein the shell layer molecular sieve can be further modified with a metal element or a nonmetal element, and the external surface of the molecular sieve is further modified with a silicon-oxygen compound to adjust the acidic site of the external surface and the aperture of the molecular sieve in order to inhibit the formation of heavy aromatic hydrocarbons. The preparation method of the multistage nano-reactor catalyst is characterized in that the transition shell layer can be prepared from the Fischer-Tropsch catalyst through multiple steps, the shell layer contains or does not contain an assistant, and the shell layer molecular sieve undergoes or does not undergo surface modification. The catalyst can be used for the direct preparation of the aromatic compounds, especially lightweight aromatic hydrocarbons, from the synthetic gas; the selectivity of the lightweight aromatic hydrocarbons in the hydrocarbons can reach 75% or more, and the content of the aromatic hydrocarbons aromatic hydrocarbons in a liquid phase product is not less than 95%; and the catalyst has a good stability and has a very good industrial application prospect.

Coating compositions and methods for applying reactive silanol coating compositions having electron deficient surfaces when cured wherein organic radical groups from the silanes are forced to the surface of the coating. The interpenetrating silicon-oxygen structure below the surface skews the electron cloud downward creating a net positively charged surface which is hydrophobic and oleophobic to repel contaminants by discouraging light hydrogen bonding. The surface is also extremely tight and thereby absent nutrients for microorganisms, discourages organic growth. These unique qualities provide cleanliness solutions for automotive and marine applications, including substrates subjected to elevated temperatures typically destructive to organic coatings (paints). Substrate examples are: brakes to repel brake dust on wheels; coating of engines and engine accessories, high-temperature exhausts/stacks/eductors, and engine compartments; automotive, architectural, industrial, and marine exterior substrates; and preservation and restoration of vehicles and boat interiors, seats, and instrument panels/dashboards and the like.

The present invention relates to a wet etching composition including a sulfonic acid, a phosphonic acid, a phosphinic acid or a mixture of any two or more thereof, and a fluoride, and to a process of selectively etching oxides relative to nitrides, high-nitrogen content silicon oxynitride, metal, silicon or silicide. The process includes providing a substrate comprising oxide and one or more of nitride, high-nitrogen content silicon oxynitride, metal, silicon or silicide in which the oxide is to be etched; applying to the substrate for a time sufficient to remove a desired quantity of oxide from the substrate the etching composition; and removing the etching composition, in which the oxide is removed selectively.

The invention provides a heat radiation material, a heat radiation structure, and preparation methods thereof. The heat radiation material comprises, by weight, 10-30 parts of inorganic heat radiation nano-grade material aqueous slurry, 40-80 parts of aqueous high-molecular resin, 0.5-5 parts of an auxiliary agent, and 5-20 parts of a diluting agent. The inorganic heat radiation nano-grade material aqueous slurry comprises, by weight, 10-25 parts of an inorganic heat radiation nano-grade material, 0.5-20 parts of a bi-functional large-molecular modifier, and 50-100 parts of a solvent. According to the inorganic heat radiation nano-grade material, the bi-functional large-molecular modifier is used in surface modification. Selective absorption and grafting hybridization reaction are carried out on the surface of the inorganic heat radiation nano-grade material, such that coordination self-assembly behaviors of ester bond, silicon-oxygen bond, hydrogen bond, and the like are formed on the surface of the material. Therefore, inorganic heat radiation nano-grade material interface performance is controlled, compatibility and system dispersion stability of the inorganic heat radiation nano-grade material are improved, and better heat radiation performance can be obtained.

A proton-conducting membrane, excellent in resistance to heat, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high temperature and a method for producing the same. A proton-conducting membrane includes a carbon-containing compound and inorganic acid, characterized by a phase-separated structure containing a carbon-containing phase containing at least 80% by volume of the carbon-containing compound and inorganic phase containing at least 80% by volume of the inorganic acid, the inorganic phase forming the continuous ion-conducting paths. The method for producing the above proton-conducting membrane includes steps of preparing a mixture of a carbon-containing compound (D) having one or more hydrolyzable silyl groups and inorganic acid (C), forming the above mixture into a film, and hydrolyzing/condensing the hydrolyzable silyl group contained in the mixture formed into the film, to form a three-dimensionally crosslinked silicon-oxygen structure (A). The above proton-conducting membrane is incorporated in a fuel cell.

The invention relates to a method of POSS modified ultra-thin fire-resistant coating polymer matrix, and in the method, non-reactive POSS or reactive POSS is introduced in the polymer matrix by a physical or chemical method to form the real nanometer fire-retardant polymer matrix; the nanometer fire-retardant polymer matrix has good heat resistance in high temperature, and can form silicon oxygen compound which is deposited on the surface of unburned polymer after burning to form a protective layer, thus slowing the heat transfer to a certain extent, inhibiting the combustible gas from releasing, separating the mixture of the combustible gas and oxygen and improving the fire-retardant property.

The preparation method for vycor glass that emits green light comprises, using porous glass with SiO2 content over 95wt%, wherein, the aperture is 1.0-10nm and pore takes up volume of 23-28%; dipping the said glass into solution that contains rare-earth ion, such as Tb ion, or Tb ion and Ce ion, or gadolinium ion and Yt ion; sintering at temperature more than 1050Deg. The product has green light of 545nm when activating by ultraviolet light of 254nm.

The invention relates to a chabazite molecular sieve and application thereof, belonging to the field of preparation of molecular-sieve inorganic cellular materials. The chabazite molecular sieve is aninorganic porous material with a CHA topological structure formed by self-assembling of silicon-oxygen tetrahedrons and aluminum-oxygen tetrahedrons, and the chabazite molecular sieve has a Si/Al molar ratio of 4 to 8, a BET-process specific surface area of 400-800 m<2>/g and a grain size of 0.8-20 [mu]m. Alkyl ammonium hydroxide and adamantyl ammonium hydroxide are used as dual templates in thepreparation of the molecular sieve, so the usage amount of expensive adamantyl ammonium hydroxide is reduced, and preparation cost is lowered. The molecular sieve has large specific surface area and pore volume; the octatomic ring pore window of the molecular sieve facilitates the improvement of CO2/N2 separation performance, and out-of-skeleton balanced cations are favorable for improving N2/O2 separation performance.