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3694results about How to "Not corrosive" patented technology

Equipment and method for extracting biologically active ingredients from subcritical fluid

The invention discloses equipment and a method for extracting biologically active ingredients from subcritical fluid, aims to solve the problems of low extraction efficiency and the like existing in the aspects of biologically active ingredient separation technology in the prior art and provides a set of subcritical equipment which comprises an extracting agent supply system, an entrainer supply system, an extraction system, a separation system, a solvent recycling system, a desolvation system, a heat supply system, a computer control system and the like, has high automatic control degree and is used for extracting the biologically active ingredients. Simultaneously, the invention also provides a new technological method for extracting the biologically active ingredients by adopting a subcritical extraction process. The method has the advantage of relatively low cost on the conventional extraction of an organic solvent, and the equipment has the characteristics of no solvent residue, no pollution, high bioactivity and the like in a product obtained by supercritical CO2 extraction technology and has the advantages of low investment on production equipment, high production efficiency within unit time, low energy consumption, flexible operation, high degree of automation and the like.
Owner:XINJIANG UNIVERSITY +1

Aqueous grinding fluid applied to super precision grinding of hard and brittle materials and application method thereof

The invention discloses an aqueous grinding fluid applied to super precision grinding of hard and brittle materials and an application method thereof. The grinding liquid contains chelant 0.1-5, a pH value regulator 5-15, a suspending agent 0.2-5, a dispersion stabilizer 0.5-10, a lubricant 5-20, an antirusting agent 0.5-5, fungicide 0-2, a defoamer 0-2 and deionized water compensating the balance of total amount of 100 parts. Under an alkali condition, the aqueous grinding fluid applied to super precision grinding of hard and brittle materials is beneficial for grinding materials with various sizes, has good suspension property and dispersion stability; when the aqueous grinding fluid is used for super precision grinding of various different hard and brittle materials, especially high-hardness materials, scratches, etching pits and other defects are not produced easily; and the grinding speed is high, the subsequent cleaning is convenient; and the aqueous grinding fluid has excellent lubricating property and antirusting property when in matched use with the grinding materials, and the mixing liquid is uniform in color and has no sediment in 48 h. When the aqueous grinding fluid is used for grinding a wafer on a grinding machine, the ground wafer is subjected to water-added ultrasonic washing, and the wafer has good surface smooth finish, no scales, etching pits and other defects, and the surface roughness can be within 2 microns.
Owner:AMER TECH CO LTD

Preparation method of micro-emulsion absorption liquid used for processing organic exhaust gas

The invention relates to a preparation method of an organic exhaust gas micro-emulsion absorption liquid, and a method for applying the micro-emulsion absorption liquid for cleaning industrial organic exhaust gas comprising benzene, toluene, xylene, and the like. The invention belongs to the technical field of atmosphere pollution control. The absorption liquid is prepared from the components of, by mass, 80-90% of water, 0.5-3% of a surfactant, 7-19.5% of a coupling agent, and 0.02-0.06% of an auxiliary agent. The surfactant is sufficiently mixed with water, such that a surfactant solution is obtained; the auxiliary agent is dissolved in water, such that an auxiliary agent solution is obtained; the two solutions are combined and uniformly mixed; and the coupling agent is added, and the obtained solution is stirred, such that the organic exhaust gas micro-emulsion absorption liquid is obtained. The organic exhaust gas micro-emulsion absorption liquid is suitable to be used for controlling exhaust gas containing benzene-series volatiles, and has the advantages of convenient raw material source, low cost, mild and stable property, low toxicity, environment-friendliness, no absorption tower corrosion or blocking phenomena, no severe influence to human health, high removal rate to organic exhaust gas, no need of pretreatment upon exhaust gas, and low investment and running cost. Saturated absorption liquid and absorbed organics can be recycled, such that waste can be turned useful.
Owner:GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI

Extinguishment combination with hot gas sol

The invention provides ''a hot aerosol fire-extinguishing composition'' and relates to an oxidative magnesium salt hot aerosol fire-extinguishing composition represented by anhydrous magnesium nitrate. The composition is characterized in that the composition can be magnesium nitrate, magnesium carbonate, or other magnesium salt, and can also be a compound of magnesium nitrate, or other magnesium salt with potassium nitrate, strontium nitrate, or other potassium salt or strontium salt; a reducer can be one of or the combination of a plurality of ammonium carbamidine, dicyandiamide, red prussiate of potash, formamine, triazole, and tetrazole; a capability improver can be magnesium carbonate, manganous carbonate, aluminium powder, powdered carbon, magnesium hydrate, metal oxide, etc.; and the bond adopts phenolic resin, etc. The preparation of the magnesium salt comprises the continuous steps: medium temperature and low pressure dehydration, spray under the protection of nitrogen-oxygen flow or ultrafine grinding of grinded colloid, and microencapsulated hydrophobic treatment, etc. Compared with the prior art, the fire-extinguishing composition has the advantages of low price, extensive source, fire-extinguishing capability of K-type composition, and low causticity and toxicity of the ultimate product of combustion.
Owner:SHAANXI J&R FIRE FIGHTING CO LTD

Expansion flame-proof organosilicon fluid sealant and method of producing the same

InactiveCN101368080AEnsure the safety of personnel and propertyGood fire performanceOther chemical processesAdhesivesOrganosiliconPlasticizer
The invention relates to an expansion flame retardant organosilicon sealant and a manufacturing method thereof. The sealant comprises the following components by weight portion: 100 portions of Alpha, Omega-dihydroxyl polysiloxane; 5 to 30 portions of plasticizer; 20 to 100 portions of filler; 50 to 150 portions of inorganic flame retardant; 5 to 30 portions of expansion fire retardant; 1 to 30 portions of cross-linking agent; 0.1 to 1 portion of catalyzer; 1 to 5 portions of viscosity increaser and 0.1 to 5 portions of inorganic pigment. The manufacturing method comprises the following steps: the Alpha, Omega-dihydroxyl polysiloxane, the filler, the inorganic flame retardant and the expansion fire retardant are dehydrated at 80 to 150 DEG C in a vacuum triple motion agitator, and are mixed for 0.5 to 2 hours before the mixture is cooled to the room temperature; the silane cross-linking agent, the viscosity increaser, the catalyzer and the plasticizer are added and mixed for 0.5 to 2 hours. The expansion flame retardant organosilicon sealant has excellent mechanical property, fire retardancy, adhesion and storage stability, which is primarily used as a sealant in devices that cables are threaded through on watercrafts as well as used for closing off various openings formed in the way that cables, air conduits, oil tubes and so on pass through walls, bulkheads, floor slabs, decks and so on in buildings or power supply systems.
Owner:陈栋梁 +1

Method for preparing chitin and its chitosan and chitosan oligosaccharide

The present invention relates to a method for preparing chitin and chitosan oligosac charide. The method comprises the steps that usual raw materials such as the crust of shrimp and crab, the insect crust or the fungal mycelia, etc. are micronized through the dry process or wet process; the carapace material of the obtained fine powder raw material is decalcified with the chemical process, and then is defatted and deproteinized with the method of micro-organism compound enzyme coarse enzyme liquid co-enzymolysis, and the insect and fungus fine powder thereof is directly defatted and deproteinized; a whole cell immobilizing bioreactor of a chitin deacetylase high-yield producing strain is prepared, to perform the circulatory deacetylation to the chitin and then obtain chitosan with corresponding degree of deacetylatoion; obligate anaerobic acid-producing bacterium and high-yield producing chitosan bacterium are utilized, the chitosan is submerged and fermented in the liquid, to obtain chitosan oligosaccharide with high water solubility. The present invention has the advantages that the method is helpful to fully utilize the resources, and makes the waste to the worth, at the same time, the default of the manufacturing process of the chemical process can be avoided, the production efficiency is improved, the energy is saved, the consumption is reduced, the byproduct with corresponding high value added can be produced, the comprehensive economic benefits of the relative secondary industry are obviously improved, the industrial development is promoted, and the multi-win effect is attained.
Owner:重庆百奥帝克微生态科技有限公司

Water-soluble insulating varnish and preparation method thereof

The invention relates to water-soluble insulating varnish and a preparation method thereof. The water-soluble insulating varnish of the invention consists of water-soluble resin, water-borne curing agent, water-base defoamer, water-base flow agent, water-base catalyst and water; the proportion of the components is as below: 30 percent to 50 percent of water-soluble resin; 10 percent to 30 percent of water-base curing agent, 1 percent to 1.0 percent of water-base catalyst, 0 percent to 0.5 percent of water-base defoamer, 0 percent to 0.5 percent of water-base flow agent and 20 percent to 60 percent of water; the water-soluble insulating varnish has the advantages of environmental protection and safety; no harmful solvent released to the atmosphere; no inflammability and explosion, no corrosion; no transparent or translucent paint liquid, good stability, long application service life under normal temperature; simple solidifying process, good insulating performance of the paint film after solidification, high strength and strong toughness; technical indexes meeting or exceeding the technical indexes of the prior solvent-type insulating varnish; the most important is that the insulating varnish takes water as solvent or diluent, which does not bring pollution and reduces the cost.
Owner:SHANGHAI BAOQING TONGYONG ELECTRICAL

Silicone fireproof sealant for construction and preparation method thereof

The invention discloses a silicone fireproof sealant for construction and a preparation method thereof. The preparation comprises the steps of adding alpha, omega-dihydroxy polysiloxane, a filler, an inorganic flame retardant and a nitrogen system flame retardant into a kneading machine, carrying out dehydration at the temperature of 100-180 DEG C and the vacuum degree of 0.06-0.1MPa for 0.5-4 hours, cooling, and then preparing a base material. The base material, polydimethylsiloxane, an inorganic pigment, a crosslinking agent, a silane coupling agent and a catalyst are added into a planetary mixer at the room temperature, keeping the vacuum degree at 0.06-0.1MPa, stirring at the speed of 20-80 r / min, carrying out reaction under stirring for 0.5-6 hours, and preparing the silicone fireproof sealant for construction with no pollution to the base material, flame retardance and excellent adhesion and storage stability. The inorganic flame retardant and the nitrogen system flame retardant are in synergistic flame retardance, and the silicone fireproof sealant can effectively reduce the adding amount of the inorganic flame retardant and greatly improve the mechanical processing performance of a product under the situation of achieving the equivalent flame retardant grade FV-0.
Owner:浙江凌志新材料有限公司

Preparation method of graphene uniform dispersion

The invention relates to a preparation method of graphene uniform dispersion, belonging to the technical field of new nano materials. The preparation method comprises the following steps of: (1) preparing aqueous surfactant solution with the concentration of 0.2-20g / L; (2) mixing raw graphite powder with the aqueous surfactant solution according to the concentration of 1-100g / L, forming suspension and adding the suspension into a high-pressure reactor with strirring; (3) adjusting the rotating speed of the high-pressure reactor to be 50-300rpm and the temperature in the reactor to be 100-300 DEG C, carrying out heat preservation treatment on the raw graphite powder for 5-24 hours and then taking out paste; (4) carrying out 1000-2000rpm centrifugation on the paste for 15-45 minutes, and obtaining supernatant solution which is the dispersion with one-layer and multilayer graphene. The preparation method has the advantages that the aqueous surfactant solution used in the preparation process can be recycled without exhaust emission; the used materials are non-corrosive, non-toxic, non-flammable and non-explosive products; the process can not cause large damage to the protogenic conjugated structure of the graphene; and the low cost can be realized, and the graphene dispersion with excellent dispersity and stability can be prepared.
Owner:常熟三爱富氟源新材料有限公司

Hollow glass bi-component organosilicone sealant and preparation method and application thereof

The invention relates to a hollow glass bi-component organosilicone sealant and a preparation method and application thereof. The hollow glass bi-component organosilicone sealant comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 100 parts of terminated polydimethylsiloxane, 10-30 parts of plasticizer and 100-400 parts of filler; and the component B comprises the following raw materials in parts by weight: 100 parts of plasticizer, 20-60 parts of carbon block, 30-70 parts of cross-linking agent, 20-60 parts of thickening agent and 0.2-2 parts of catalyst. The 100 percent tensile elongation modulus is 0.3-0.5MPa, the breaking elongation rate is 300-600 percent, the moisture transmissivity is 2.5-4.5g / m<2>.d, and the hollow gas bi-component organosilicone sealant has good adhesive force on a hollow glass base material and no corrosion on the base material. The preparation method has simple process and low equipment requirement; and a reaction by-product has no corrosion and can ensure the comprehensive implementation of technical effects of the bi-component low-permeability hollow glass bi-component organosilicone sealant. The invention is applied to a hollow glass frame and can play a role of ideal moisture obstruction.
Owner:西卡(江苏)工业材料有限公司
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