45 results about "Aluminium oxide" patented technology

The present invention relates to a method and apparatus for intensifying the energy content of an organic material by converting the material into hydrocarbons and the resulting product thereof. A method for converting an organic material into hydrocarbon fuels is disclosed. The method comprising the steps of pressurising said organic material being in a fluid to a pressure above 225 bar, heating said organic material in said fluid to a temperature above 200 C in the presence of a homogeneous catalyst comprising a compound of at least one element of group IA of the periodic table of elements. The disclosed method further comprises the steps of contacting said organic material in said fluid with a heterogeneous catalyst comprising a compound of at least one element of group IVB of the periodic table and/or alpha-alumina assuring that said fluid has initially a pH value of above 7.

The invention discloses an alumina coating method of a lithium ion battery positive electrode material. The method comprises the following steps: adding ammonia water to a positive electrode material suspended aluminum nitrate solution in a dropwise manner to form a precipitate coated by Al(OH)3, and heating the precipitate in an air atmosphere muffle furnace to form an alumina coated positive electrode material. The coating method can improve the charge and discharge capacity of the lithium ion battery and prolong the cycle life.

The invention belongs to the technical field of a refractory castable, and particularly relates to a castable for a blast-furnace tapping channel and a preparation method thereof. The castable comprises the following components: 55-80wt% of fused brown corundum, 8-21wt% of silicon carbide, 0.01-5wt% of carbon source, 2-8wt% of alpha-alumina micro powder, 1-7wt% of fused white corundum, 0.5-5wt% of silica powder, 1-5wt% of calcium aluminate cement, 0.3-4wt% of elemental silicon powder, 0.01-0.4wt% of water reducing agent, 0-0.2wt% of organic fibers and 0-0.2wt% of aluminum powder. The preparation method comprises the steps of dry-blending the components for 10-180 seconds, additionally adding water accounting for 4-6wt% of the raw materials, and stirring for 1-8 minutes so as to obtain the castable. Carbon nanotubes are introduced to the castable for the tapping channel so as to partially or totally replace spherical asphalt and be uniformly distributed in the castable, and can be filled into tiny gaps so as to improve the compactness of the castable, so that the anti-erosion and anti-scouring properties of the castable are improved, toxic smog formed in the process of baking the spherical asphalt is reduced, and the body injury of workers and the environmental pollution caused by the toxic smog are reduced; the castable has the characteristics of excellent properties, long service life and environmental friendliness.

The invention relates to a Y-type molecular sieve-containing hydrocracking catalyst carrier and a preparation method thereof. The carrier consists of a modified Y-type molecular sieve and alumina, wherein the Y-type molecular sieve is obtained by the treatment by mixed aqueous solution of an aluminum salt and an acid and by hydrothermal treatment and has the properties of a specific surface of between 750 and 850m<2>/g, a total pore volume of between 0.35 and 0.48ml/g, a relative crystallinity of between 90 and 130 percent, a cell parameter of between 2.437 and 2.445nm, a silicon to aluminum molar ratio of between 15 and 70, an infrared acidity of between 0.5 and 1.0 mmol/g, a Bronsted acid to Lewis acid ratio of more than 7.0 and a sodium oxide content of less than or equal to 0.05 weight percent. The carrier can be used in the preparation of a hydrocracking catalyst, and the obtained catalyst has the characteristics of excellent catalytic activity, high heavy naphtha selectivity, high yield, high aromatic hydrocarbon potential content of the heavy naphtha and the like.

The electrode for high-voltage in-situ impedance spectroscopy measurement of the present invention and its preparation method and application belong to the technical field of in-situ measurement of electrical quantities under high-voltage conditions. The electrode consists of an aluminum oxide protective layer (3) deposited on the surface of the diamond anvil (2) and a metal film electrode (1); the metal film electrode (1) is circular in the center of the anvil surface of the diamond anvil (2), Copper wire (5) is bonded to the metal film electrode (1) on the side of the diamond anvil (2); the metal spacer (4) is used as another electrode, forming an axisymmetric electrode together with the metal film electrode (1) system. Electrodes are prepared by magnetron sputtering, molybdenum coating, aluminum oxide deposition, photolithography and chemical corrosion. The invention solves the problems of electrode fixing and sample cavity insulation, and can ignore the influence of the parasitic capacitance and inductance of the system on the measurement results, making it possible to measure the material impedance spectrum in situ with the diamond anvil under high pressure.

Hydrofluoroolefins and hydrochlorofluoroolefins contaminated with acid and/or iron compounds are purified and stabilized by contacting the haloolefin with a solid adsorbent such as alumina and then combining the purified haloolefin with one or more stabilizers such as an epoxide. The purified, stabilized haloolefins thus obtained are useful in a wide variety of end-use applications, including, for example, as refrigerants, propellants, foaming agents, fire suppression or extinguishing agents, and solvents.

The invention relates to a zinc-aluminum coating enhanced with particles in micro-nano sizes, and belongs to the field of surface protection of magnetic materials. The coating is used for being coated on the surface of a neodymium-iron-boron permanent magnet and the zinc-aluminum coating mixed with the micro-nano particles, and the micro-nano particles are one or more kinds of titanium dioxide, silicon oxide, aluminum oxide, aluminum and cerium oxide in the micro-nano sizes. The technical scheme of the zinc-aluminum coating lies in that the micro-nano particles are mixed into the zinc-aluminum coating, so that the zinc-aluminum coating concurrently has an own anti-corrosion property of the coating and an incidental high-temperature oxidation resistant property, an incidental shock resistant property and incidental high tenacity of the micro-nano particles, and a mechanical property and a scratch resistant property of the surface coating of the anti-corrosion neodymium-iron-boron permanent magnet are greatly improved. The invention further relates to a production method of the zinc-aluminum coating enhanced with the particles in the micro-nano sizes, and the production method comprises the following steps: processing matrixes, preparing a coating solution, coating the matrixes and drying the coating solution.

The invention provides a ceramic floor tile with diatom mud and a method for manufacturing the ceramic floor tile. The ceramic floor tile comprises a base layer, a surface layer and an adhesion layer. The adhesion layer is arranged between the base layer and the surface layer, and the base layer is made of the diatom mud, feldspar, kaolin, quartz, clay, porcelain clay, moire stone, marble, broken iron, polystyrene and polyacrylate; the surface layer is made of the diatom mud, Kunshan stone, carborundum disc stone, colorants, pebble, glass cloth, plastic particles, polyurethane, ethylene-ethylic acid ethylene copolymers, silicon dioxide and aluminum oxide. The ceramic floor tile and the method have the advantages that the ceramic floor tile is made of nontoxic and pollution-free raw materials, and the diatom mud which is a main material is easy to obtain, is natural and pollution-free and has diversified sterilization, disinfection and waterproof merits; the ceramic floor tile is made of the easily available materials, processing and manufacturing processes are simple, and the ceramic floor tile manufactured by the aid of the method is high in smoothness and quality.

The invention provides a double-sided aluminum base circuit board with super-high thermal conductivity and a preparation method of the circuit board. The double-sided aluminum base circuit board comprises an aluminum base plate material, an electrical conductive hole formed on the aluminum base plate material for communicating the upper side and the lower side of the aluminum base plate material, an aluminum oxide layer formed on the upper and the lower sides of the aluminum base plate material and on the wall of the electrical conductive hole by oxidation method for insulation and heat conduction, and a DLC (diamond-like carbon) coating and a Cu coating adhered on the aluminum oxide layer. The double-sided aluminum base circuit board provided by the invention is excellent in comprehensive heat conducting property, and the surface insulation heat-conducting layer is free of high polymer materials and is excellent in flame retardant property and aging resistance. In addition, the insulation layer on the surface of the circuit board and the insulation layer on the wall surface of the electrical conductive hole are an integrated insulation heat-conducting body with the same composition and an integrated structure, thereby obviating the hole filling and the chemical copper deposition method, simplifying the process and improving the yield.

The invention provides an infrared stealth textile coating fabric which comprises a printing layer, a surface layer, a thermal-insulating layer, a bonding layer and a base cloth layer which are laminated sequentially, wherein the printing layer comprises one-component polyurethane A, a solvent A, a dilution A, infrared reflection color paste, white paste and a defoaming agent A; the surface layer comprises one-component polyurethane B, a solvent B, a dilution B, aluminum oxide or iron oxide, a defoaming agent B and a flatting agent B; the thermal-insulating layer comprises two-component polyurethane C, a solvent C, a dilution C, aluminum powder, a foaming agent, a cross-linking agent C and a cross-linking accelerator C; the base cloth layer is nylon or dacron. According to the fabric provided by the invention, defects of the prior art are overcome, the fabric has the softness of textiles, can prevent rain and corrosion, can be used both on sunny days and slushy days, and has stealth and warmth retention effects.

The invention provides a manufacturing method of a high-hardness plastic screen and a high-hardness plastic housing of a mobile phone, and a mobile phone screen and a mobile phone housing manufactured by the manufacturing method. The manufacturing method comprises the following steps: performing secondary compressing and forming to obtain a base plastic material; cleaning and drying the base plastic material through electrostatic eliminated drying gas for the first time; soaking in an adhesive for the first time; cleaning and drying the base plastic material covered with the adhesive through the electrostatic eliminated drying gas for the second time; soaking in enhanced liquid containing silicide, nanometer aluminum oxide and corundum for the second time; roasting; hardening; trimming. The product manufactured by the method is free of rainbow-like marks, high in light transmission rate, and high in density; the hardness of the product is up to 9H, and is equal to or beyond that of a traditional glass screen; in addition, the product is hard to break, so that the product can completely replace glass to be used as the screen of the mobile phone; compared with a glass material, the plastic is low in price, so that the cost of the mobile phone screen manufactured through the plastic is low, and as a result, the use cost of a user can be decreased.

The invention discloses an alumina grinding ball preparation method, which includes the following steps: (1) preparing alumina ball seeds: alumina powder with purity of 99.99-99.995% and particle sizeD50 of 0.8-1.0um, screening, balling, adding a glue solution in the balling process, controlling the moisture content to be 15-30%, screening when balling occurs, and controlling the size to be 0.25-0.35mm to obtain alumina ball seeds; (2) making green balls: continuously sieving the alumina balls obtained in step (1), adding and spraying the glue solution, controlling the moisture content to be18-30%, and sieving and compacting to obtain balls with a density of 1.35-1.45g/ml as finished green balls for later use; and (3) calcination: selecting the finished green ball and calcining at 1620-1650 DEG C to obtain the alumina grinding ball finished product with the real density of 3.8-4.0g/cm3, purity > 99.99% and abrasion < 5g/kg. The method can reduce the cost of producing high-purity alumina powder for nanocrystallization; and the loss of alumina balls during use is low and the product quality is stable.

A catalyst for production of propylene through catalytic dehydrogenation of propane adopts alumina-chrome oxide as a mixed carrier, metallic Pt as an active component and metallic Sn, La and Ca as assistants, the chemical formula of the catalyst is Pt-Sn-Ca/Cr2O3.Al2O3 and Pt-Sn-La-Ca/Cr2O3.Al2O3, and a mass ratio of Cr2O3 to Al2O3 in the mixed carrier is 2:1. A preparation method of the catalyst has the advantages of simple process and easy operation; a performance test result of the catalyst shows that the catalyst has high propane conversion rate, high activity, long service life and high propylene selectivity; and the initial conversion rate is about 48%, and the catalyst still has a high conversion rate of about 40% and high propylene selectivity of above 91% 4h later, so the catalyst has a great economic effect, and can be industrially popularized.

The invention discloses an epoxy resin curing agent. The epoxy resin curing agent is prepared from the following components in parts by weight: 40-60 parts of acid-anhydride mixture, 20-25 parts of aluminum oxide, 15-30 parts of isoprene, 10-25 parts of n-butyl alcohol-water glyceryl ether, 8-15 parts of asbestos fiber and 10-15 parts of diluent. The epoxy resin curing agent provided by the invention has high curing reaction speed, and the complete curing time of epoxy resin can be shortened.

The invention provides a glass bottle and a production method thereof and belongs to the technical field of production of glass bottles. The glass bottle is produced by the following raw materials in parts by weight: smashed glass, sodium carbonate, aluminum oxide, borax, ferroferric oxide, calcium phosphate, zirconium oxide and titanium oxide. The method comprises the following steps: (1) washing the smashed glass, then breaking the glass into granules, freezing and drying the glass granules; (2) continuously ball milling the dried glass granules and other raw materials into powder; (3) drying the powder, putting the powder into a smelting furnace, smelting and uniformly mixing the powder to obtain a mother solution; (4) producing the mother solution into glass bottles with different sizes, naturally cooling the glass bottles till the glass bottles are hardened, and then putting the hardened glass bottles into an annealing furnace; and (5) tempering and then obtaining the finished products. The anti-smashing glass bottle is simple and easily available in raw materials and low in cost; the production method of the glass bottle is simple and feasible in process; meanwhile, the glass bottle has high smashing resistance, so that the sharp sections which cause harm to the human body or animals are not formed even if the glass bottle is broken.

An elongated trench (35) is formed so as to connect the Ag layer (32) and the exposed part of the circuit layer stretching out around the Ag layer (32). The trench (35) a narrow and elongated recessed part penetrating the glass layer (31) and the aluminum oxide film (12A) from the Ag layer (32) to reach the surface (12a) of the circuit layer (2). The extended part (36), which is a part of the Ag layer (32) flatted along with the inner surface (35a) of the trench (35), is formed in the trench (35). The Ag layer (32) and the circuit layer (12) are electrically connected directly by Ag with a low electric resistance value by the extended part (36) in the portion where the trench (35) is formed.

The invention belongs to the field of production and processing of an attenuation sheet, and specifically relates to a manufacturing method for a 1dB attenuation sheet with power of 2W; the manufacturing method comprises the following steps of designing an attenuation sheet pattern through HFSS software in a simulation manner; sputtering a resistor and an electrode layer on an aluminum oxide ceramic substrate; electroplating a thickened gold electrode; obtaining electrode and resistor patterns through photoetching; dividing the attenuation sheet by a grinding wheel into independent attenuation sheet units; adjusting input and output impedances by a thermal oxidation impedance adjusting method; and coating the input end and the output end of the attenuation sheet with conductive silver paste. By adoption of the attenuation sheet manufactured by the invention, the operating frequency can achieve 18GHz; the attenuation precision within the operating efficiency is 1dB plus or minus 0.4dB; the standing-wave ratio is less than or equal to 1.3; and the input and output impedances are 50 plus or minus 1 omega.

The invention provides an n-alkene isomerization catalyst. The catalyst contains 50-90% (by mass) of a molecular sieve and the balance aluminum oxide; the molecular sieve is composed of SAPO-11 and ZSM-5, wherein SAPO-11 accounts for 75-90% (by mass) of the total mass of the molecular sieve, and ZSM-5 accounts for 10-25% (by mass) of the total mass of the molecular sieve; the microparticle size of the molecular sieve in the catalyst is 1-2 micrometers. The catalyst has high n-alkene isomerization activity, the isoalkene yield is high and can be maintained for a long time, a long one-way running cycle is achieved, the decreasing amplitude of regeneration performance obtained after multiple times of scorching is small, and the catalyst is suitable for the process of preparing isobutene from n-butene through an isomerization reaction and the process of preparing isopentene from n-pentene through an isomerization reaction and particularly suitable for the process of preparing isobutene through post-etherification C4 n-butene isomerization.

The invention discloses an environment-friendly ceramic coating material for a water faucet. The environment-friendly ceramic coating material for the water faucet is prepared according to a formula comprising the following raw material components in percentage by mass: 80-100 parts of fluorocarbon resin, 8-10 parts of organosilicone oil, 3-5 parts of naphtha, 6-8 parts of polydimethylsiloxane, 10-12 parts of absolute ethyl alcohol, 5-8 parts of alkylphenol polyoxyethylene, 6-8 parts of castor oil polyethenoxy ether, 30-35 parts of an acrylic resin emulsion, 6-8 parts of a nano graphene oxide solution, 10-12 parts of perfluoropolyether, 5-6 parts of sodium chloride, 6-8 parts of disodium hydrogen phosphate, 5-6 parts of aluminum oxide, 6-10 parts of glass fiber powder, 5-8 parts of zinc powder, 6-8 parts of copper powder, 8-10 parts of carbon fiber powder, 8-10 parts of polybutylene terephthalate, 6-8 parts of calcium stearate, 5-8 parts of zinc stearate, 7-9 parts of sodium methyl silicate, 3-5 parts of isobutyl isobutyrate, 6-8 parts of ethlene bisstearamide and 8-10 parts of diethylene glycol monobutyl ether. The environment-friendly ceramic coating material for the water faucet has the advantages of corrosion resistance, wear resistance, high adhesive force, bright and clean appearance and compact coating structure.

The invention discloses an insulated fireproof coating for optical cables. The insulated fireproof coating comprises, by weight, solvent oil No.200, ethylene glycol, silicate, glass powder, calcium carbonate, polytetrafluoroethylene powder, epoxy resin, porcellanite, aluminum oxide, silicon nitride, antimony trioxide, mica powder, silicon carbide, maleic anhydride, silicone rubber, vermiculite, titanium dioxide, melamine, pentaerythritol, mineral fibers, powdery polyvinyl chloride, boride and an auxiliary agent, wherein the auxiliary agent refers to a leveling agent or defoaming agent. The insulated fireproof coating for the optical cables has the advantages that the coating is excellent in fireproof, insulated and flame-retardant performance and highly resistant to high temperature; when the coating expands after being heated, a compact uniform fireproof heat-insulated layer is formed; the coating has excellent physical and chemical properties and is quick to dry, resistant to damp, acid, base and water and remarkable in fireproof and heat-insulated effect, so that safety of electric wires and cables can be guaranteed effectively.

The invention discloses a large-plate-blank carbon-free and silicon-free baking-free long water gap, which consists of a long water gap substrate and an inner liner, wherein the long water gap substrate consists of a zirconium carbon outer layer and an aluminum carbon inner layer, the zirconium carbon outer layer consists of following substances in parts by weight: 70 to 80 parts of zirconium, 12 to 14 parts of C (carbon) and 2 to 4 parts of CaO (calcium oxide), the aluminum carbon inner layer consists of the following substances in parts by weight: 60 to 80 parts of Al2O3 (aluminum oxide) and 10 to 30 parts of C, and the inner liner consists of the following ingredients in parts by weight: 74 to 76 parts of aluminum magnesium spinel, 14 to 16 parts of anti-explosion fiber and 8 to 10 parts of phenolic resin. Through the use of the baking-free long water gap for large-plate-blank continuous casing low-carbon and low-silicon steel, impurity pollution and steel blank carbon increase and silicon increase phenomena caused by secondary oxidization of large-ladle molten steel and molten steel sputtering can be prevented, the continuous casting efficiency can be continuously improved, the continuous casting blank quality is ensured, and more economic benefits are created for enterprises.