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224results about How to "Production process safety" patented technology

Method for preparing inorganic gel of bentonite

ActiveCN101049941AImproved consistency and thixotropySimple production processSilicon compoundsSodium carbonateSodium fluoride
This invention discloses a method for preparing bentonite inorganic gel. The method comprises: mixing bentonite filter cake, sodium salt powder and urea powder to obtain a mixture, drying, pulverizing, and uniformly mixing with gelating agent to obtain bentonite inorganic gel. The sodium salt powder is one or more of sodium carbonate, sodium fluoride and sodium silicate. The addition amounts of sodium salt powder and urea powder are 2-10 wt. % and 0-20 wt. % of bentonite filter cake, respectively. The gelating agent is one or more of glues and cellulose substances, and the addition amount is 1-30 wt. % of the mixture. The method has such advantages as simple process, high efficiency, and high product performance, no toxicity and no harm, and is suitable for mass production.
Owner:湖北三鼎科技有限公司 +1

Method for preparing stable peracetic acid disinfectant

ActiveCN102037959AIncrease the concentration of peracetic acidImprove wettabilityBiocideDisinfectantsHigh concentrationAcetic acid
The invention relates to a method for preparing stable peracetic acid disinfectant. The peracetic acid disinfectant comprises the following raw materials in percentage by weight: 27% to 39% of hydrogen peroxide, 22% to 36% of acetic acid, 0.01% to 2% of composite stabilizer, 0.01% to 2% of surfactant, and the balance of water. In the obtained peracetic acid disinfectant, the mass concentration ofperacetic acid is 15 to 20g / 100g, the mass concentration of the hydrogen peroxide 20 to 30g / 100g, and the mass concentration of the acetic acid 10 to 20g / 100g. The peracetic acid disinfectant prepared by the method has the characteristics of high concentration of peracetic acid, good stability, good disinfection and sterilization effect, simple production process, safety and the like.
Owner:GUANGDONG HUANKAI MICROBIAL SCI & TECH

Production method for portable self-spraying bi-component foam caulking agent

The invention discloses a production method for a portable self-spraying bi-component foam caulking agent. Polyols (polyether polyol, polyester polyol and vegetable oil polyol), a catalyst, silicone oil, a foaming agent, other accessories and the like are poured into a special galvanized iron pot, and are injected with a propellant to form a component A; one or more of crude MDI (diphenyl-methane-diisocyanate), liquefied MDI or prepolymers thereof are poured into another special galvanized iron pot, and are injected with the propellant to form a component B. When the portable self-spraying bi-component foam caulking agent is used, pot valves of the components A and B are opened, and the two components are mixed through a mixing gun for foaming formation after being automatically sprayed.
Owner:BEIJING DONGCHEN RUIFENG CHEM

Anfo explosive and manufacturing method thereof

The invention provides anfo explosive with low explosion velocity and a manufacturing method thereof. The anfo explosive comprises 82 to 97 percent of crushed porous granular ammonium nitrate and 3 to 7 percent of fuel oil in terms of mass. A formulation of the anfo explosive is simple, high explosive and heavy metal or heavy metal oxides are not contained, and a production process is efficient, safe and environment-friendly. Moreover, the anfo explosive has wide density adjusting range and is easy to explode; the performance of the explosive is convenient to control, the adjusting method is more, and the adjusting range is large; and the raw material sources are wide, the production cost is low, and the method is suitable for industrialized production.
Owner:BEIJING BGRIMM YIBO TECH

Soluble soybean polysaccharide-soybean protein-curcumin compound as well as preparation and application

The invention belongs to the technical field of functional food processing, and discloses a soluble soybean polysaccharide-soybean protein-curcumin compound as well as preparation and application. The preparation method comprises the steps of: separately dispersing and dissolving soybean proteins and soybean polysaccharide in deionized water so as to obtain soybean protein dispersed liquid and soybean polysaccharide dispersed liquid; dispersing curcumin in absolute alcohol to sufficiently dissolve the curcumin so as to obtain a curcumin ethanol solution; then adding the curcumin ethanol solution into the soybean protein dispersed liquid so as to obtain soybean protein-curcumin mixed liquid; then adding the soybean polysaccharide dispersed liquid into the soybean protein-curcumin mixed liquid so as to obtain mixed liquid; regulating the pH of the mixed liquid to be 7.0 or 4.0; and freeze drying the mixed liquid so as to obtain the soluble soybean polysaccharide-soybean protein-curcumin compound. According to the soluble soybean polysaccharide-soybean protein-curcumin compound disclosed by the invention, the soybean polysaccharide and the soybean proteins are successively compounded with the curcumin, so that the stability and the slow release effects of the curcumin in an aqueous solution are obviously improved, and the soluble soybean polysaccharide-soybean protein-curcumin compound has favorable application prospects in the development of functional foods and medicines.
Owner:SOUTH CHINA UNIV OF TECH

Stable peroxyacetic acid disinfectant

The invention discloses a stable peroxyacetic acid disinfectant which relates to a disinfectant. The peroxyacetic acid disinfectant comprises the following raw materials in percentage by mass: 27-39 percent of hydrogen peroxide, 22-36 percent of acetic acid, 0.01-2 percent of compound stabilizer, 0.01-2 percent of surfactant and the balance of water. In the prepared peroxyacetic acid disinfectant, the concentration of the peroxyacetic acid is 15-20 g / 100g, the concentration of the hydrogen peroxide is 20-30 g / 100g, and the concentration of the acetic acid is 10-20 g / 100g. The peroxyacetic acid disinfectant has the characteristics of high peroxyacetic acid concentration, high stability, good disinfection and sterilization effects, simple production process, safety and the like.
Owner:GUANGDONG HUANKAI MICROBIAL SCI & TECH

Solid acid catalyst for 5-hydroxymethyl furfural synthesis and preparation method thereof

The invention provides a solid acid catalyst for 5-hydroxymethyl furfural synthesis and a preparation method thereof and relates to a solid acid catalyst. The invention aims to provide the preparation method of the solid acid catalyst for 5-hydroxymethyl furfural synthesis, which has the advantage that a raw material is cheap, easy to obtain, simple in preparation process, and environmentally-friendly, and can be used for synthesizing 5-HMF (Hydroxymethyl Furfural) through carbohydrate dehydration. The solid acid catalyst for 5-hydroxymethyl furfural synthesis is an oxide load sulfate ion or an oxide load chromium ion. The method comprises the following steps: dissolving oxide into deionized water; then completely precipitating the oxide by using a precipitant, aging, washing, filtering and drying; and finally, soaking the precipitant in sulfuric acid solution or chromium solution, dipping, filtering, drying and roasting to obtain the solid acid catalyst for 5-hydroxymethyl furfural synthesis. The 5-hydroxymethyl furfural does not corrode equipment, is easy to separate and can be recycled. The yield of the 5-hydroxymethyl furfural is high. The solid acid catalyst and the preparation method also have the advantages of environmental friendliness, low cost, simple preparation process, easiness in operation, and safe and reliable manufacturing process.
Owner:XIAMEN UNIV

Rare earth molybdenum alloy wire and preparation method thereof

The invention relates to a rare-earth molybdenum alloy wire and its process for preparing. The invention is characterized in that the said alloy wire contains two rare-earth oxides including lanthanum oxide and Y oxide(mass %) which is 0.4 %-1.0% of the alloy amount and the proportion by weight of lanthanum oxide and Y oxide is 4:1. The process for preparing is different from the traditional powder metallurgy productive technology, which includes performing double-cone vacuum drying and liquid-solid doping at molybdenum dioxide stage, then performing secondary reduction to prepare binary rare-earth doping molybdenum powder, finally preparing rare-earth doping molybdenum wire with Mo-La-Y of 0.5-0.8mm diameter by impression, agglomeration and pressure processing procedure. Compared with the pure molybdenum, the product is of good high-temperature behavior and high recrystallization temperature which increases by 300-500 DEG C than the pure molybdenum, and is of high intensity and abrasive resistance, low ductility and long durability, which has wide application in the mechanical process industry.
Owner:JINDUICHENG MOLYBDENUM CO LTD

Mo-La-Ce rare earth molybdenum alloy wire and preparation method thereof

The invention relates to a Mo-La-Ce rare-earth molybdenum alloy wire and its process for preparing. The invention is characterized in that the said molybdenum alloy wire contains 0.4 %-1.0% lanthanum oxide and cerium oxide(mass %) and the proportion by weight of lanthanum oxide and cerium oxide is 4:1. The process for preparing is different from the traditional powder metallurgy productive technology, which includes performing vacuum drying and liquid-solid doping for molybdenum dioxide, lanthanum nitrate and cerium nitrate solution, then performing secondary reduction to prepare binary rare-earth doping molybdenum powder, finally preparing rare-earth doping molybdenum wire with Mo-La-Ce of 0.5-0.8mm diameter by impression, agglomeration and pressure processing procedure. The raw materials of this invention is cheap and facile, and the prepared molybdenum wire is of high tensile strength, strong abrasive resistance and simple process and is inflexible, and has high rate of finished products, good compatibility and long durability.
Owner:JINDUICHENG MOLYBDENUM CO LTD

Preparation and application of short-chain fluorine-containing copolymer water-repellent oil-repellent finishing agent

ActiveCN108250350AEliminate bioaccumulation problemsProduction process safetyLiquid repellent fibresEmulsionChemistry
The invention discloses preparation and application of a short-chain fluorine-containing copolymer water-repellent oil-repellent finishing agent. A preparation method of the finishing agent comprisesthe following steps: taking short-carbon-chain perfluoroalkyl group acrylate, non-fluorine-containing acrylate monomer, and cross-linking monomer, emulsifying the monomers under the effect of a cationand nonionic compound emulsifier, further finely emulsifying by virtue of a homogenizing machine or in an ultrasonic environment, finally dropwise adding a water-soluble initiator, initiating the polymerization, and preparing a short-chain fluorine-containing copolymer fine emulsion. By adopting the fine emulsion polymerization method in the preparation process, no organic solvent is needed, andthe stability of the copolymer emulsion is ensured; and in addition, by utilizing a short-chain fluorine-containing chain segment with a carbon chain number smaller than 6, while the excellent water-repellent and oil-repellent performance is ensured, the environmental protection requirement can be met.
Owner:JIANGNAN UNIV

High temperature molybdenum alloy wire and its preparing method

The present invention is high temperature molybdenum alloy wire and its alloy consists of K 0.05- 1.0 wt%, Si 0.1-0.5 wt% and Al 0-0.05 weight %, except Mo, O and inevitable impurities. The alloy is prepared through double cone vacuum dry liquid-solid doping in the MoO2 stage, secondary reduction to preparing K, Si and Al doped Mo powder, pressing, sintering and other steps, and is further produced into molybdenum alloy wire of 0.5-0.8 mm diameter through press work and other steps. The molybdenum alloy wire has high tensile strength, high wear resistance, simple production process and other advantages.
Owner:JINDUICHENG MOLYBDENUM CO LTD

Microspheres prepared from composition containing zirconium oxide and preparation method of microspheres

The invention relates to composite zirconium oxide microspheres and a preparation method thereof. The microspheres are prepared from yttrium oxide as a stabilizer of a zirconium oxide material. The microspheres comprises a doped system of third components including one or more of alumina, cerium oxide, copper oxide, magnesia, calcium oxide and silica, wherein the content of the yttrium oxide in the zirconium oxide is 0.1-8mol% while the total doping amount of the alumina, the cerium oxide, the copper oxide, the magnesia, the calcium oxide and the silica is 0-30wt%. According to the method, sediment dry gel is molded and further sintered to finish preparation of the composite zirconium oxide ceramic microspheres. The preparation method is simple in production technology, relatively low in cost, and applicable to industrialization. A lot of energy sources are saved for industrialization of the zirconium oxide ceramic microspheres. Meanwhile, the prepared ceramic microspheres disclosed by the invention have the characteristics of large density, durability, stability and the like.
Owner:YAAN YUANCHUANG CERAMIC

Method for preparation of emulsion explosive by using waste explosives

The invention relates to a method for preparation of an emulsion explosive by using waste explosives. The method comprises the following process steps: preparation of water phase liquid, preparation of a compound oil phase, emulsification, cooling, sensitization and charging. A key point of the invention lies in that waste emulsion explosives are utilized; and the waste emulsion explosives refer to chemical bubble-sensitive emulsion explosives which suffer demulsification, crystallization, hardening and the like and lose detonator sensitivity and detonation capacity. In the method, the waste emulsion explosives are used in the preparation of the water phase liquid. According to the invention, low temperature, environmental protection and no pollution of three wastes (waste gas, waste water and industrial residue) are realized, according with developmental requirements; and except packages of explosive cartridges, the explosives are totally recovered, and a high recovery rate is obtained.
Owner:CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST

Process for synthesizing triketone herbicide cyclic sulcotrione

InactiveCN104292137AHigh yieldEliminate hydrogen peroxide oxidation stepOrganic chemistryOrganic compound preparationBenzoic acidCyclohexene
The invention relates to a process for synthesizing triketone herbicide cyclic sulcotrione. The method comprises the following steps: (1) synthesizing 2-chloro-6-methylsulfonyl methylbenzene; (2) synthesizing 2-chloro-3-acetyl-6-methylsulfonyl methylbenzene; (3) synthesizing 2-chloro-3-methyl-4-methylsulfonyl benzoic acid; (4) synthesizing methyl 2-chloro-3-methyl-4-methylsulfonyl benzoate; (5) synthesizing methyl 2-chloro-3-bromomethyl-4-methylsulfonyl benzoate; (6) synthesizing 2-chloro-3-(2,2,2-trifluoroethyoxy)methyl-4-methylsulfonyl benzoic acid; (7) synthesizing 2-chloro-3-(2,2,2-trifluoroethyoxy)methyl-4-methylsulfonyl benzoic acid 3-oxo-1-cyclohexene ester; and (8) synthesizing cyclic sulcotrione. The process disclosed by the invention has the beneficial effects that the reaction steps are reduced, the reaction time is shortened, and the yield of intermediates is improved; the reaction conditions are mild and safe; and the cost is reduced.
Owner:WUHAN INSTITUTE OF TECHNOLOGY

Method for preparing 5-hydroxymethyl furfural and 2,5-furandimethanol simultaneously

The invention discloses a method for preparing 5-hydroxymethyl furfural and 2,5-furandimethanol simultaneously. According to the method, the 5-hydroxymethyl furfural and the 2,5-furandimethanol can be prepared simultaneously through performing Cannizzaro reaction to the 5-hydroxymethyl furfural (5-HMF). Compared with the previous methods, the method of the invention does not need extra oxidant, reducing agent and expensive metal catalyst, has the advantages of low production equipment requirement, safe production technology, moderate reaction condition, high reaction efficiency and economic atom, can obtain two products at the same time, and accords with the current green chemical technology and the requirement for product diversified production.
Owner:UNIV OF SCI & TECH OF CHINA

Lithium ion battery and positive electrode plate thereof and preparation method thereof

The invention relates to the field of a lithium ion battery and discloses a lithium ion battery and a positive electrode plate thereof and a preparation method thereof. The positive electrode plate comprises a current collector; a positive electrode active material layer and a lithium-supplementing material layer are coated on the current collector; a mixture of a positive electrode active material, a conductive agent and a binder is coated on the positive electrode active material layer; and a mixture of LiF, a transition metal, the conductive agent and the binder is coated on the lithium-supplementing material layer. By use of the technical scheme, the reversible gram capacity of the lithium ion battery is improved on the basis of guaranteeing the safety of production and use of the lithium ion battery.
Owner:江西星盈科技有限公司

A New Process for Producing Anhydrous Ethanol by Rectification and Pervaporation

The invention relates to a new process for producing anhydrous ethanol by rectification pervaporation, which is characterized in that it comprises the following steps: (1) entering the mixed ethanol solution containing 20%-80% water into a rectification tower for rectification to yield 95% Ethanol; (2) 95% ethanol is heated to 88°C-91°C to enter the pervaporation membrane module for separation, and the flow rate of 95% ethanol entering the pervaporation membrane module is 100-400L / h. The production process is simple and safe, does not add any third component, has low energy consumption, is green and environmentally friendly, occupies a small area, and greatly reduces the production cost of anhydrous ethanol.
Owner:白银阳明银光化工有限公司

Scandium oxide-stabilizing zirconia powder and preparation method thereof

InactiveCN101830505AAvoid harsh production conditionsLow costZirconium oxidesFiltrationZirconium oxychloride
The invention relates to a scandium oxide-stabilizing zirconia powder and a preparation method thereof. The scandium oxide-stabilizing zirconia powder comprises zirconium oxychloride as precursor mother salt, one or more third elements of aluminum oxide, cerium oxide and bismuth oxide and a doping system, wherein the doping quantity of the scandium oxide is 8 mol%, and the total doping quantity of the aluminum oxide, the cerium oxide and the bismuth oxide is 0-7 wt%. The preparation method comprises the steps of water washing, filtration, drying, calcinations and powder surface dry and wet modification as well as constant-pressure hydrolysis reaction and low-pressure hydro-thermal reaction, wherein the constant-pressure hydrolysis reaction and low-pressure hydro-thermal reaction are carried out by the steps of: firstly carrying out constant-pressure hydrolysis on a water solution of the precursor mother salt ZrOCl2 (ScCl3) in a reactor, and then carrying out hydro-thermal treatment on hydrolysis liquid at the temperature less than 150 DEG C and the pressure of 0.3-0.5 MPa. The scandium oxide-stabilizing zirconia powder has the characteristics of small grain size, centralized size distribution, high sintering activity, lower specific surface area, suitability for the traditional casting process of a SOFC (Solid Oxide Fuel Cell) and high conductivity and strength index, and the preparation method has the advantages of simple and safe production process, lower cost, low requirement for equipment and easy realization of industrial big production.
Owner:江西泛美亚材料有限公司

Lithium ion battery, positive electrode sheet thereof and preparation method thereof

The invention relates to the field of lithium ion batteries and discloses a lithium ion battery, a positive electrode sheet thereof and a preparation method thereof. The positive electrode sheet includes: a current collector coated with a positive electrode active material layer and a lithium-replenishing material layer, wherein the positive electrode active material layer is coated with a mixtureof a positive electrode active material, a conductive agent, and a binder; the lithium-replenishing material layer is coated with a mixture of Li2S, transition metal, a conductive agent, and a binder. The application of the technical solution improves the reversible gram capacity of the lithium ion battery on the basis of ensuring the safety of the production and use of the lithium ion battery.
Owner:江西星盈科技有限公司

System and method for preparing isononanoic acid and method for preparing metal organic skeletal catalyst

The invention provides a system and method for preparing isononanoic acid and a method for preparing a metal organic skeletal catalyst. The system includes an oxidation reactor used for oxidizing isononylaldehyde to isononanoic acid; a cooler used for cooling a part of material flow that flows out of the oxidation reactor; a metal ion separator used for separating excessive metal ions from the material flow that flows out of the cooler; a peroxide decomposition reactor used for decomposing a peroxide in the other part of the material flow that flows out of the oxidation reactor; and a rectification apparatus used for separating the material flow that flows out of the peroxide decomposition reactor to obtain the isononanoic acid product, wherein the material outlet of the metal ion separator is connected to the material inlet of the oxidation reactor. The invention further provides an isononanoic acid preparation method that is good in selectivity and safety and high in yield.
Owner:WANHUA CHEM GRP CO LTD

Preparation method of deodorant

The invention relates to the technical field of filling material, and discloses a preparation method of a deodorant. The preparation method comprises the following steps of (1) respectively soaking silicate mineral powder and diatomite into a hydrochloric acid solution, and respectively drying; (2) mixing the silicate mineral powder and diatomite obtained in step (1) and calcium carbonate, industrial sodium chloride and metal salt according to a ratio, putting into a rotary kiln, and calcining, so as to obtain a metal oxide and silicate mixture; (3) cooling the mixture obtained in step (2), finely grinding by a roll press grinder, screening, soaking the screened mixture, drying the soaked mixture in a dryer, finely grinding and screening, so as to obtain a product. The preparation method has the advantages that the waste water and waste slag are fully utilized in the preparation process, so that the safe, green and environment-friendly effects in the whole production process are realized; the deodorizing effect of the product is excellent, the usage amount is less in comparison with the usage amount of similar products, and the cost is reduced; the application field of products is wide, and the product can be applied to the fields of rubber, plastic, paint, sewage treatment and the like.
Owner:徐浩强

Prefabricated light transmitting concrete plate production mold and manufacturing method thereof

The invention discloses a prefabricated light transmitting concrete plate production mold and a manufacturing method thereof, and belongs to the technical field of concrete. The prefabricated light transmitting concrete plate production mold comprises a front pedal, a left side template, a right side template, a cross pull support, pull support fixed bolts, a back side U-shaped steel template, a front side U-shaped steel template, optical fiber holes, optical fibers, left side straight pull supports, combined bolts, straight pull support fixed bolts and right side straight pull supports; the front pedal includes a transverse inclined support, a bearing plate, an inclined rod and a vertical rod; the left side straight pull supports are fixed at the middle parts of the left sides of the front side U-shaped steel template and the back side U-shaped steel template through the straight pull support fixed bolts; multiple optical fibers are provided; each optical fiber penetrates through the optical fiber hole in the right side template and the optical fiber hole in the left side template in sequence; and the two ends of the optical fibers are respectively tensioned and fixed on hook rings in the left side straight pull supports and hook rings in the right side straight pull supports. The prefabricated light transmitting concrete plate production mold can realize industrial production of light transmitting concrete plates; and the manufacturing method is safe and reliable, and can obtain the prefabricated concrete plates with high light transmittance.
Owner:CHINA MCC17 GRP

Epoxidized soybean oil plasticizer and production method thereof

The invention relates to an epoxidized soybean oil plasticizer, in particular to an epoxidized soybean oil plasticizer and a production method thereof. The epoxidized soybean oil plasticizer is characterized by being prepared from raw materials in percent by weight: 95-100 parts of soybean oil, 50-78 parts of hydrogen peroxide with the weight concentration of 27-50 percent and 8-13 parts of formic acid with the weight concentration of 85 percent. The epoxidized soybean oil plasticizer disclosed by the invention is prepared by adopting the following steps of: adding weighted soybean oil and the formic acid into a reaction kettle, then dropwise adding the hydrogen peroxide for epoxidized synthesis, carrying out water washing after the reaction is ended, and finally dewatering by distilling to obtain the finished product. The epoxidized soybean oil plasticizer and the production method thereof have the beneficial effects of safe and reliable production process, simpleness, convenience and feasibility in production operation, short period, low cost, high quality, high yield, small pollution and capability of completely achieving the idealized purpose.
Owner:刘忠

Florfenicol water-soluble powder and preparation method thereof

The invention relates to florfenicol water-soluble powder and a preparation method thereof. The water-soluble powder is prepared from the following raw materials in parts by weight: 5-20 parts of florfenicol, 25-95 parts of water-soluble cyclodextrin polymer (CDP) and 5-19 parts of hydroxypropyl beta-cyclodextrin. The powder can be completely dissolved into water, the room-temperature solubility can reach 33.5% and the water solution is completely clear. The room-temperature solubility can reach 33.5% (335,000ppm), and the effective content of the florfenicol can reach 15% (150,000ppm), and is about 3300 times of state-recommended clinical dosage and much higher than that of an existing florfenicol composition.
Owner:SHANDONG BINZHOU ZHIYUAN BIO TECH CO LTD

Method for continuously preparing boron-doped SiO2 aerogel

InactiveCN107662923APrecise thickness controlAccurate control of aging timeSilicon compoundsTransmittanceSmall footprint
The invention discloses a method for continuously preparing boron-doped SiO2 aerogel, belonging to the preparation field of novel porous materials. According to the method, by setting a preparation system with the functions of raw material feeding, sol preparation, gel preparation, solvent replacement, gel drying and waste material recycling, a large number of boron-doped SiO2 aerogel can be continuously produced. The method has the advantages that the occupied area of equipment is small, the preparation process is continuous and controllable, the production energy consumption is reduced, theequipment cost is lowered, and the labor cost is lowered. The prepared boron-doped SiO2 aerogel has good mechanical property, light transmittance performance and high-temperature stability.
Owner:CANEW TECH SHENZHEN CO LTD

Preparation method for graphene and antimony sulphide nano-rod composite visible light catalyst

The invention provides a preparation method for graphene and antimony sulphide nano-rod composite visible light catalyst. The preparation method comprises the following steps: firstly adding oxidized graphene into ethylene glycol or 1,2-propanediol, performing ultrasonic dispersion, then adding SbCl3, heating, stirring to enable the mixture to be dissolved, adding sulfur powder, continuously stirring to enable the mixture to be uniform, adding sodium borohydride, stirring, performing reflux for a period of time, naturally cooling to the room temperature, and performing centrifugal separation to obtain a black precipitate; washing and drying the black precipitate to obtain the graphene and antimony sulphide nano-rod composite visible light catalyst. The photocatalyst prepared by the method is excellent in composite effect and high in visible light catalytic activity, has the advantages of being simple in production technology, safe in production process, easily-controllable in reaction parameter, low in implementation cost and easy to realize industrial production, and can be widely used for preparation of graphene-based composite one-dimensional nanometer materials.
Owner:XIANGTAN UNIV

Silicone rubber reinforced and cross-linked based on POSS, and preparation method thereof

ActiveCN107722281ASimple manufacturing processAvoid problems caused by usingChemical industryCross-link
The present invention relates to a silicone rubber reinforced and cross-linked based on POSS, and a preparation method thereof. According to the concrete preparation method, cyclic carbonate containing vinyl and octa polyhedral oligomeric(mercaptopropyl) silsesquioxane (SH-POSS) are subjected to a thiol-ene reaction to synthesize cyclic carbonate modified POSS as a reinforcing filler, alpha,omega-aminoalkylpolysiloxane is used as a base glue, and the cyclic carbonate group on the POSS and the amino group in the base glue are subjected to a reaction to form a cross-linked curing center so as toprepare the room temperature or high temperature silicon sulfide rubber. According to the present invention, the problems that the inorganic particles are easy to agglomerate and the interaction force at the organic / inorganic two-phase interface is weak during the traditional reinforcing can be avoided, the problems caused by the use of the catalyst during the vulcanization can be avoided, the silicone rubber preparation process is simplified, and the production process and the product have characteristics of safety, energy saving, environmental protection, strong practicality and easy promotion, and have great application potential in the fields of aerospace, electrical and electronic, light industry, chemical industry, textile, machinery, building, transportation, national defense, energy sources, medicine and medical treatment, agriculture and the like.
Owner:QINGDAO UNIV OF SCI & TECH

Bis-tail polyoxyethylene ether with macromonomer allyl-terminated ester structure for polycarboxylate superplasticizer and preparation method of bis-tail polyoxyethylene ether

The invention discloses bis-tail polyoxyethylene ether with a macromonomer allyl-terminated ester structure for a polycarboxylate superplasticizer and a preparation method of the bis-tail polyoxyethylene ether. The bis-tail polyoxyethylene ether is synthesized by two-step reactions of main raw materials of glycidyl methacrylate, iminodiacetic acid and methoxy polyethylene glycol and has the chemical formula shown in the description, wherein n is the average addition mole number of the oxyethylene group and represents any number from 10 to 100. The bis-tail polyoxyethylene ether is novel in structure, reasonable in design, simple and safe in manufacturing technology, and easily controllable in condition, and when the bis-tail polyoxyethylene ether serves as active function macromonomers of the polycarboxylate superplasticizer, dissolution can be omitted; meanwhile, when the bis-tail polyoxyethylene ether serves as active function macromonomers of the polycarboxylate superplasticizer, a novel slump-retaining polycarboxylic acid high-performance water reducer can be prepared to meet higher construction demands.
Owner:GUIZHOU TIEJIANHENGFA NEW MATERIAL TECH CO LTD

Novel high-strength foam concrete and preparation method for same

The invention discloses novel high-strength foam concrete and a preparation method for the same. The novel high-strength foam concrete is characterized in that the novel high-strength foam concrete is prepared from the following raw materials in parts by weight: 300 to 800 parts of a gel material, 250 to 850 parts of a fine aggregate, 375 to 1,250 parts of a coarse aggregate, 4 to 8 parts of a water reducing agent, 250 to 850 parts of water, 20 to 40 parts of a foaming agent and 10 to 20 parts of a foam stabilizer, wherein the foaming agent is an isocyanate derivative. According to the novel high-strength foam concrete and the preparation method for the same, the following principle is utilized: isocyanate adopted as the foaming agent is reacted with the water to generate unstable carbamic acid at first, the unstable carbamic acid is rapidly decomposed into amine and carbon dioxide, and the discharged carbon dioxide acts for foaming to generate a foam body; a prepared foam concrete material is favorable for making a heat insulation, soundproof and high-strength foam concrete building block on one hand, and on the other hand, the construction engineering cost is reduced, and the high-strength foam concrete can be widely applied to construction engineering.
Owner:JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD
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