736results about How to "Fine particle" patented technology

Disclosed is a producing method of a semiconductor device, comprising: loading a substrate into a reaction furnace; forming a film on the substrate in the reaction furnace; unloading the substrate from the reaction furnace after the film has been formed; and forcibly cooling an interior of the reaction furnace in a state where the substrate does not exist in the reaction furnace after the substrate has been unloaded.

This invention relates to production process of pucherite yellow ceramic pigment, which takes sodium silicate as raw material to coat silicon dioxide. It takes sodium silicate as silicon source, coat silicon dioxide on surface of pucherite. For the strong inertia of silicon dioxide, it be able to withstand 1000 deg high temperature, and keep bright-colored after annealing of 1000 deg. This invention can eliminate harm to human body and pollution to environment in the process of production, solve the problem of heavy metal content are overproof in the export ceramic product of our country.

The invention relates to a formula of etching liquid of anti-dazzle glassware and an etching process. Raw materials of the formula proportion by weight comprise: ammonium fluoride holding 17-24 parts or ammonium hydrogen fluoride holding 8.5-12 parts, ammonium sulfate holding 2.5-3 parts, potassium sulfate holding 2.5-3 parts, calcium fluoride holding 2.5-3 parts, sulfuric acid holding 8-12.5 parts or hydrochloric acid holding 24-37.5 parts and water holding 60-75 parts. The process comprises: (1) weighing the raw materials according to the formula of the etching liquid, then mixing, uniformly stirring and ageing to formulate the etching liquid, (2) rinsing and drying pre-etched glass by organic solvent mixed by glycerol, (3) shielding one face of the rinsed glass needing not be etched and (4) immersing the glass in the formulated etching liquid for soak, then taking out the glassware and preparing anti-dazzle glass finished products after washing by clear-water and drying. The invention has the advantages of simple process, easy operation, labor saving, subtle granular surface of the prepared glassware, high penetration rate, good anti-glare effect, durable service and the like.

The present invention provides an open arc overlaying wire material with strong abrasive resistance for a grinding roller and a grinding disk, which consists of a steel sheet and powder arranged in the steel sheet. A nano additive (A) is added into the powder, wherein the nano additive (A) can be one or any combination of three of nano TiN (titanium nitride), nano SiN (silicon nitride) and nano SiC (silicon carbide). The powder contains 3 to 5 weight percent of the nano additive (A). The nano additive (A) has the functions of strengthening dispersion of nano ceramic phases, improves cohesion strength, rupture strength and combination strength of a cladding layer material and has good high-temperature stability; and the nano additive (A) improves self lubricity of the material, improves theabrasive resistance of cladding layer metals and prolongs service life of the grinding roller and the grinding disk processed by overlaying. The service life of the grinding roller and the grinding disk processed by the overlaying is improved by 1.5 to 2 times than that processed by open arc overlaying; and the cladding efficiency is improved by 10 to 20 percent so as to save the overlaying wirematerial. The open arc overlaying wire material has light fume and less molten metal spatter in the process of overlaying, and a weld pass is smooth after the material is molded.

The invention relates to a composition comprising vitamins and mineral substances. The composition comprises the vitamins and the mineral substances, wherein the vitamins include vitamin A, vitamin C, vitamin D3, vitamin E, vitamin B1, vitamin B2, vitamin B6, vitamin B12, folic acid, nicotinic acid amide and pantothenic acid, and the mineral substances include calcium, iron, zinc, and selenium. According to the composition, the amounts of the vitamins and the mineral substances are reasonably proportioned strictly according to the needing amounts of a human body; the mineral substance iron is supplied by ferrous fumarate, so that the destroy on the active substances, such as vitamins, by the addition of the inorganic iron can be effectively prevented; the mineral substance selenium is provided by selenium enriched beer yeast, the toxic and side effects of chemical selenium (such as sodium selenite) on the human body and intestines and stomach stimulation are eliminated, and therefore the selenium can be absorbed and utilized by the human body more efficiently and safely.

The present invention relates to a preparation method of high-purity aluminium oxide powder body. It is characterized by that it adopts aluminium sheet whose purity is 99.9999% and organic alkal; and makes them be mutually reacted in hot water bath to obtain the precipitate of aluminium hydroxide, then the precipitate is calcined at 1100-1200deg.C and ground so as to obtain high-purity ultrafine aluminium oxide powder body. The described organic alkal; includes any one of choline, hexamethohydrotetramine and dopamine.

The invention provides layered perovskite structural ceramic and a preparation method thereof. The preparation method includes mixing well titanate compounds, bismuth compounds, strontium compounds, iron compounds, cobalt compounds and complexing agent in solvent, heating, drying and combusting to obtain powder, and presintering to obtain powder; performing the powder, and performing hot-pressing sintering to obtain the structural ceramic in in a formula (I). Compared with ceramics prepared in the prior art by solid phase sintering process, the structural ceramic in the formula (I) is prepared by solution process and hot pressing sintering. The preparation method has the advantages that less volatile low-valence strontium ions are introduced, increased leakage current due to volatilization of the strontium ions is improved, and ferroelectric properties are improved; the raw materials are evenly spread by the solution process, the power is even in component and has high reactivity, and Fe-Co ions are coupled fully; and the materials processed by hot pressing sintering are high in density and orientation, and the layered perovskite structural material can be obtained, namely Bi(n+1-x)SrxF3(n-3)/2Co(n-3)/2Ti3O3(n+1) (I).

The invention relates to a method for preparing a lithium carbide/lithium sulfide (Li2S) composite anode material of a lithium-sulfur battery by performing carbon thermal reduction on lithium sulfate (Li2SO4), and belongs to the technical field of lithium-sulfur batteries. The lithium carbide/lithium sulfide composite material is prepared by performing the carbon thermal reduction on a lithium sulfate-containing composite material serving as a precursor under a condition of inert atmosphere protection, and is applied to an anode of the lithium-sulfur battery. The lithium sulfide composite material preparation method disclosed by the invention is a novel method for in-situ synthesis of the anode material of the lithium-sulfur battery; and the prepared lithium carbide/lithium sulfide composite material is high in active substance dispersivity and stable in structure, and has the advantages of high specific capacity, excellent circulating and rate capability and the like when used as an anode material of the lithium-sulfur battery. The method is easy to operate, low in preparation cost and favorable for large-scale production.

The invention belongs to the material technical field, and relates to a preparation method for modifying a melamine pyrophosphate fire retardant by grafting oxidized grapheme, which comprises the following steps: adding melamine and anhydrous sodium pyrophosphate in distilled water, fully stirring for uniformly dispersing a system; adding an oxidized grapheme colloidal solution through ultrasonic dispersion in the above system, adding a protonic acid dilute solution of a stabilizing agent for catalysis drop by drop, adjusting pH value of the reaction system, heating, stirring, after the reaction is completed, performing pumping filtration on the reaction products, washing, and drying products to obtain the melamine pyrophosphate fire retardant. The preparation method has the advantages of high efficiency, easy operation and environmental protection, and the prepared halogen-free expansion-type fire retardant has the advantages of small particle size and high thermostability, can be used in a halogen free system of polyolefin, and can be used for polyamide, polyester, rubber and intumescent fire retardant paint.

A biobased artificial stone and a production process thereof are disclosed. The artificial stone includes the following components: inorganic filler, resin, a curing agent, an accelerating agent, a crosslinking agent, a coupling agent, an antifoaming agent, lignin and a pigment. The formula of the artificial stone includes by weight: 10-85% of the inorganic filler; 3-60% of the resin; 0.03-3% of the curing agent; 0-2% of the accelerating agent; 0.05-2% of the coupling agent; 0.05-5% of the crosslinking agent; 0-3% of the antifoaming agent; 0.01-40% of the lignin; and 0-2% of the pigment. According to the invention, the lignin is used in the artificial stone, the lignin is turned into wealth from waste, the environmental pollution of the lignin is reduced, the cost of the artificial stone is reduced, and at the same time the weather resistance and light stability of the artificial stone are improved, thus the artificial stone has antibacterial ability, is green and environmental-friendly, and is suitable for building decoration of living environments.

The invention discloses a quenching and tempering device for cooling high-temperature fume, comprising a two-fluid electrical appliance controller, a water path and an air path arranged between a high-temperature fume inlet and a high-temperature fume outlet. The device of the invention is characterized in that a low pressure pump is arranged in the air path, a low pressure air path is combined into a water pipeline before a spray gun, two transducers are arranged to adjust the pressure and flow of a water pump and an air pump, the nozzle bore diameter is phi 6-7mm, and the spray particle diameter is smaller than 300 micrometers; a temperature sensor is respectively arranged at a wetting tower inlet and the fume outlet, and the outlet temperature is controller to 130-150 DEG C; an operation program is controlled to calculate the temperature difference of the fume inlet temperature and the fume outlet temperature, tower volume and spray fall height; two transducers are used for controlling the water pump and the air pump to automatically adjust operation power when low air pressure is 0.4-0.6MPa, and air flow quantity and water flow quantity are 5-25T/H. the particle diameter of sprayed water spray is small and even, which can better realize precise control to temperature and reduces atomization particle residence time and wet bottom danger. The dust removal device designed by the invention increases fume density and volume, lowers speed and improves dust removal function. In particular, the spray granularity is small, which can obviously control temperature and humidity, lower discharge Dioxin and furan mixed in dust and reduce environment protection cost.

The invention discloses a rubber tire tread and a milling process thereof. The rubber tire tread comprises the following components in parts by weight: 70-110 parts of natural rubber, 0-15 parts of styrene-butadiene rubber, 5-20 parts of tread rubber powder, 1.5-2.5 parts of stearic acid, 1-2 parts of sulfur powder, 2-18 parts of white carbon black, 12-15 parts of carbon block, 2-30 parts of aromatic oil, 1-8 parts of zinc oxide, 4-7 parts of an anti-aging agent, 1-4 parts of pine tar, 1-4 parts of an accelerating agent, 0.2-1 part of an anti-reversion agent and 2-5 parts of a binding agent. A three-section milling process is adopted, and the milling process can improve the abrasive resistance, tear resistance and chunking and chipping resistance of the tire tread.

The invention relates to a solar cell encapsulating EVA (ethylene vinyl acetate copolymer) adhesive film with high light transmittance. The solar cell encapsulating EVA adhesive film is characterized in that the thickness of the EVA adhesive film is 0.8 mm-1.1 mm, and the EVA adhesive film is prepared from raw materials in parts by weight as follows: 100 parts of EVA resin, 0.5-2.5 parts of a plasticizer, 0.1-0.3 parts of a photoelectric conversion rate enhancer, 1-4 parts of an anti-aging agent, 1.5-2.5 parts of a blocking agent, 1-2 parts of a dispersing agent, 1-3 parts of a coupling agent and 1-3 parts of a cross-linking agent. Firstly, the raw materials are added to a mixer proportionally and mixed into uniform components, the components are subjected to melt mixing by a banbury mixer and then subjected to extrusion and pelletizing, and the EVA adhesive film is obtained. According to the prepared EVA adhesive film, the light transmittance of the adhesive film is not influenced and the mechanical properties are greatly improved while properties and photoelectric conversion efficiency of the adhesive film are improved with addition of multiple additives.