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62results about How to "The preparation method is energy-saving and environment-friendly" patented technology
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Method for preparing carbon microsphere adsorbent under catalysis of metal salt with low-temperature hydrothermal method
ActiveCN105582888AEasy disposalReduce energy consumptionOther chemical processesAlkali metal oxides/hydroxidesAir atmosphereSorbent
The invention discloses a method for preparing a carbon microsphere adsorbent under catalysis of metal salt with a low-temperature hydrothermal method. The method comprises steps as follows: (1) a biomass solution with the concentration being 2wt%-20wt% and a metal salt solution with the concentration being 0.5wt%-2wt% are prepared, then mixed in the mass ratio being (2-5):1 and stirred for 5-10 min, and a reaction solution is obtained; (2) the reaction solution is transferred to a stainless steel reaction kettle, the volume of the reaction solution accounts for 60%-80% of that of the reaction kettle, the reaction solution is heated to 100-160 DEG C at a certain heating speed, reacts at the constant temperature for 8-20 hours and is naturally cooled, separated and dried in vacuum, and hydrothermal carbon microspheres are obtained; (3) the hydrothermal carbon microspheres are calcined and carbonized at the air atmosphere, and the carbon microsphere adsorbent is obtained. The preparation process of the adsorbent is simple, energy consumption is low, the reaction time is shortened to be within 24 hours, and the adsorbent has high adsorption performance for part of positive ions, particularly, uranyl ions, has excellent radioresistance, thermal stability and acid stability and can be widely used for treatment of radioactive wastewater.
Owner:SOUTHWEAT UNIV OF SCI & TECH
Preparation method of pre-enzymatic oat powder and application of preparation method
ActiveCN102845677AImprove processing application performanceReduce energy costsFood preparationBiotechnologyAmylase
The invention relates to a preparation method of pre-enzymatic oat powder. The method comprises the following steps of: uniformly mixing amylase with water to mix with coarse oat power, then carrying out extrusion on the obtained mixture and drying, and finally milling the mixture to be fine powders. According to the preparation method provided by the invention, with the combination of extrusion and enzymolysis, not only the oat is aged but also the starch is enzymolysed, so that the processing application property of oat powder is greatly enhanced. In addition, according to the preparation method provided by the invention, the complex drying processes such as spraying drying or drum drying are not in need after the enzymolysis of the oat powder is carried out, so that the processing energy consumption and the processing cost are greatly reduced; compared with the prior processing technique, the preparation method provided by the invention is more energy-saving and more environment-friendly, and the cost is lower.
Owner:BEIJING SHUOFANG SCI & TECH DEV CO LTD
Lithium ion battery made of hollow porous nickel oxide composite material on basis of coating of N-doped carbon layer, and preparation method thereof
InactiveCN103682327AHigh discharge specific capacityImprove cycle stabilityFinal product manufactureCell electrodesCarbon layerDispersity
The invention relates to a lithium ion battery made of a hollow porous nickel oxide composite material, and the negative electrode material of the lithium ion battery is wrapped by an N-doped carbon layer. The lithium ion battery comprises a negative electrode plate, a positive electrode plate, a bath solution and a membrane, and is characterized in that the active material of the negative electrode plate is the hollow porous nickel oxide composite material coated by an N-doped carbon layer and formed by taking an ionic liquid as a coating agent, the grain diameter of the hollow porous nickel oxide composite material is 200 to 300 nm, and the surface of the hollow porous nickel oxide composite material is coated with the N-doped carbon layer thin film distributed evenly. According to the lithium ion battery provided by the invention, the negative electrode material has a hollow porous structure coated by the unique N-doped carbon layer, the grain diameter is small, the dispersity is good, the conductivity performance of the material is good, lithium-ion and electron have a fast diffusion rate and transmission rate in the material, the lithium ion battery constructed on the basis of the material has the characteristics of good discharging performance, high cyclic stability and high capability. The invention further provides a preparation method of the lithium ion battery.
Owner:NANJING NORMAL UNIVERSITY
Porous composite biological material containing multiple active ions and preparation method thereof
InactiveCN103520779AImprove conductivityPromote formationCoatingsProsthesisPhosphateBiological materials
The invention discloses a porous composite biological material containing multiple active ions and a preparation method thereof, relating to the technical filed of production of medical materials. The porous composite biological material is a triple compound containing multiple active ions and calcium phosphate-silicate-calcium carbonate, and is composed of a porous ceramic structure main body containing active ions A and calcium phosphate-calcium carbonate and a phosphate-silicate cement coating, wherein both phosphate and silicate in the phosphate-silicate cement coating contain active ions B and calcium; and the phosphate-silicate cement coating accounts for 5-60% (mass percent) of the micropore structure main body. According to the invention, the exquisite three-dimensional intercommunication micropore structure of cuttlebone having extremely high porosity is kept, has excellent bone conductibility and favorable degradability, and can be subjected to stepped degradation; the release of the active ions and beneficial elements can be regulated and controlled; and the overall degradation rate of the material can be regulated according to different new bone formation requirements.
Owner:李亚屏
Preparation method for polypyrrole-poly-dopamine composite coating
InactiveCN106011975AShort polymerization timeProne to peroxidationElectrophoretic coatingsPaints for electrolytic applicationsPolypyrroleOxygen
The invention discloses a preparation method for a polypyrrole-poly-dopamine composite coating. The preparation method includes the following steps that (1) dopamine and a dopant are dissolved into deionized water, then a pyrrole monomer without impurities is continuously added to be dissolved, dry nitrogen is then led in to remove dissolved oxygen in a mixture, and an electrolyte with the pH ranging from 1 to 8 is obtained; and (2) in the above electrolyte, a constant potential polymerization process is adopted for conducting polymerization on the surface of one side of a pure titanium substrate to obtain the polypyrrole-poly-dopamine composite coating, and oxide, miscellaneous dirt and grease on the surface of the pure titanium substrate are removed through pretreatment. According to the method, an electrochemical method is adopted for conducting polymerization on the dopamine and the pyrrole, the polymerization time is short, polymerization can be carried out under the acidity and alkaline conditions, and meanwhile a polymerization film obtained through polymerization has some beneficial effects of the dopamine and the pyrrole; and a larger possibility is provided for potential application of the polymerization film.
Owner:XIAMEN UNIV
Nano ferric phosphate hollow sphere lithium ion battery and preparation method thereof
InactiveCN102185154AHigh discharge specific capacityImprove discharge performanceFinal product manufactureCell electrodesDispersityPhosphate
The invention provides a lithium ion battery using nano ferric phosphate hollow sphere as anode material. The lithium ion battery comprises a positive electrode plate, a negative electrode plate, an electrolyte and a membrane. The battery is characterized in that the positive active material of the positive electrode plate is nanoscale hollow-sphere-shaped ferric phosphate with an average particle diameter of about 150-280nm. The nano ferric phosphate hollow sphere is synthesized by low temperature hydrothermal method. According to the invention, the lithium ion battery uses the nano ferric phosphate hollow sphere as positive active material, wherein the positive active material ferric phosphate with a nonscale hollow-sphere-shaped structure has low density and good dispersity, and the diffusion and transmission rate of Li <+> and electrons is high in the positive active material. The lithium ion battery prepared on the basis of the positive active material has the characteristics of good discharging performance, high cyclical stability and large specific capacity. The invention also discloses a preparation method of the lithium ion battery.
Owner:NANJING NORMAL UNIVERSITY
Chinese wolfberry fruit powder and preparation method thereof
InactiveCN102178193AKeep natural colorMaintain qualityCosmetic preparationsToilet preparationsPesticide residueAdditive ingredient
The invention relates to Chinese wolfberry fruit powder and a preparation method thereof. The preparation method of the Chinese wolfberry fruit powder comprises the following steps of: (1) selecting fresh and matured Chinese wolfberry fruits or dried Chinese wolfberry fruits, spraying with water, and removing silt, pesticide residue and other residues attached to the surfaces of the Chinese wolfberry fruits; (2) directly drying and sterilizing the cleaned fresh (dried) Chinese wolfberry fruits by adopting tunnel microwave; and (3) immediately crushing the dried Chinese wolfberry fruits by using a pulverizer to obtain a Chinese wolfberry fruit product with particle size of 80-300 meshes. In the invention, drying and crushing operations are carried out at low temperature, so that the obtained products have favorable quality, maintain the original cluster and nutrients of the fresh Chinese wolfberry fruits and have high quality. Therefore, the Chinese wolfberry fruit powder has the efficacy of tonifying the kidney, protecting liver, improving eyesight, beautifying skin, strengthening brain, expelling toxin, reducing sugar and fat, preventing osteoporosis, nourishing blood vessels and skin, prolonging life and delaying ageing after being used for a long time, which are also endowed by Chinese wolfberry.
Owner:黄杰
Method for preparing AZ31-RE wrought magnesium alloy
The invention provides a method for preparing an AZ31-RE wrought magnesium alloy, and relates to the technical field of alloys. The method comprises the following steps that a, a first scrap material and a second scrap material are mixed, cold pressing is conducted, and a blank is obtained, wherein the first scrap material is an AZ31 magnesium alloy scrap material, the second scrap material is an Mg-RE intermediate alloy scrap material, and the mass ratio of the first scrap material to the second scrap material is 4-299:1; b, the blank is subjected to heat extrusion, and then cold pressing is conducted, wherein heat extrusion comprises the step that the blank is subjected to heat preservation at the temperature ranging from 350 DEG C to 400 DEG C for 10-20 min; and c, the step b is repeatedly conducted at least one time, and then heat extrusion of the step b is conducted again. According to the method for preparing the AZ31-RE wrought magnesium alloy, oxidization of raw materials can be effectively reduced, the burnout rate of the raw materials is reduced, and pollution to the environment can be effectively reduced.
Owner:HARBIN UNIV OF SCI & TECH
Fluorescent glaze and preparation method thereof
The invention relates to fluorescent glaze, which is prepared from the following raw materials in parts by weight: 10 to 15 parts of strontium aluminate, 12 to 15 parts of long-afterglow fluorescent powder, 5 to 10 parts of kaolin, 18 to 35 parts of quartz, 10 to 16 parts of calcium phosphate, 15 to 22 parts of soda feldspar, 15 to 24 parts of potash feldspar, 2 to 9 parts of soapstone, 8 to 16 parts of calcite, 0.5 to 1.5 parts of zinc oxide and 10 to 13 parts of sodium borate. The glaze has the advantages of high chemical stability, good hardness, high transmission rate and high glossiness. The fired glaze has bright and transparent color and luster; a fluorescent effect can be achieved; the ornamental value of the product is improved; a dry process mixed glazing preparation method is selected; the phenomenon of water meeting hydrolysis and sedimentation in glaze slurry can be avoided; in addition, the luminous performance and the glaze surface quality of the fluorescent glaze can be improved. A preparation method has the characteristics that the energy is saved; the environment is protected; the energy consumption is low.
Owner:崔松伟
Antistatic EVA foamed composite and preparation method thereof
The invention discloses an antistatic EVA foamed composite and a preparation method thereof. First, a surface active agent is adopted for improving the surfaces of carbon fibers, then aniline is loaded on the carbon fibers in an in-situ polymerization mode, and modified carbon fibers are formed; crystalline flake graphite and the modified carbon fibers are mixed according to the mass ratio of 1:1-5:1 to form an antistatic agent, and then the antistatic agent and an EVA substrate are subjected to melt blending and cross-linking foaming to prepare the antistatic EVA foamed composite. The prepared EVA foamed composite has a good antistatic property, and compared with a pure EVA foamed material, the volume resistivity of the EVA foamed composite is lowered by about seven orders of magnitudes; moreover, due to introduction of the carbon fibers, the tensile strength and elongation at break are also improved, and the antistatic EVA foamed composite is especially suitable for protective packaging of some sensitive elements and military instruments and has extensive social and economic benefits.
Owner:FUZHOU UNIV
Superhard multi-component boride particle reinforced aluminum-based composite material and preparation method thereof
The invention discloses a superhard multi-component boride particle reinforced aluminum-based composite material and a preparation method thereof. The method includes the following steps that (1) raw materials are weighed, specifically, industrial pure aluminum, Hf, Ta, Zr, Nb and Ti elementary substance blocks and aluminum-boron binary intermediate alloy are weighed in proportion; and (2) smelting is conducted, specifically, the weighed industrial pure aluminum and the weighed Hf, Ta, Zr, Nb and Ti elementary substance blocks are put into a water-cooled copper crucible of a vacuum arc furnace in the order of the melting points from low to high, and an aluminum alloy ingot is obtained through smelting; and an aluminum alloy ingot and the aluminum-boron binary intermediate alloy are placed in the same crucible and smelted, and the (Hf0.2Ta0.2Zr0.2Nb0.2Ti0.2)B2 multi-element boride particle reinforced aluminum matrix composite material is obtained. According to the method, a vacuum electric arc melting mode is used, and transition metal particles and boron in aluminum melt are directly subjected to in-situ chemical reaction at high temperature to form multi-component boride particles. In addition, the method has the flexibility of microstructure and component design, and a series of transition metal multi-component boride particle reinforced aluminum-based composite materials with different components can be rapidly prepared.
Owner:NANJING UNIV OF SCI & TECH
Vibration and energy absorption polyurethane material and preparation method thereof
The invention provides a vibration and energy absorption polyurethane material and a preparation method thereof. The polyurethane material is prepared by reacting raw materials comprising an isocyanate reactive component A and an isocyanate component B, the isocyanate reactive component A comprises a polyalcohol component A1, a foaming agent A2 and a catalyst A3, wherein the polyalcohol componentA1 comprises bio-based polyol of which the mass proportion is not lower than 50%. The prepared vibration and energy absorption polyurethane material is relatively good in vibration and energy absorption effect, excellent in comprehensive performance, green and environment-friendly. The preparation method is simple, convenient and easy.
Owner:WANHUA CHEM BEIJING +1
High-entropy boride powder and preparation method thereof
The invention belongs to the field of high-entropy ceramic materials, and particularly relates to high-entropy boride powder and a preparation method thereof. The preparation method comprises the following steps: (1) weighing of raw materials: specifically, weighing industrial pure aluminum, transition metal particles and aluminum-boron binary intermediate alloy in proportion; (2) smelting: putting the raw materials weighed in the step (1) into a water-cooled copper crucible of a vacuum arc furnace, and conducting smelting to obtain an aluminum alloy ingot; and (3) extraction: extracting the aluminum alloy ingot obtained in the step (2) through a hydrochloric acid solution so as to obtain the high-entropy boride powder. According to the method, high-entropy boride is formed through an in-situ chemical reaction between a transition metal element and a boron element in an aluminum melt; and then, the aluminum alloy ingot containing the high-entropy boride is corroded with hydrochloric acid, and an extract is dried, so black high-entropy boride powder is obtained. The method has the characteristics of simple process, low cost and high production efficiency.
Owner:NANJING UNIV OF SCI & TECH
Multifunctional surface optimization agent for concrete and preparation method thereof
ActiveCN110370433AFast film formationStable performanceCeramic shaping apparatusSurface strengthMultiple function
The invention belongs to the technical field of materials, and particularly relates to a multifunctional surface optimization agent for concrete and a preparation method thereof. The multifunctional surface optimization agent for the concrete comprises, by mass, 5%-15% of palm oil with 58 degrees, 1%-5% of a compound emulsifying agent, 1%.-5%. of an anti-rust component, 1%.-5%. of a defoaming component, 1%.-10%. of a surface enhancing component, 1%.-5%. of a stabilizing agent, 0.1%. of an anti-corrosion agent and 80%-90% of water. According to the multifunctional surface optimization agent, four functional units including dust preventing, defoaming, demolding and surface enhancing which are related to the surface quality are integrated, the film forming speed is high when the multifunctional surface optimization agent acts on the formwork surface, a formed film is very compact, the surface strength of the concrete is improved by 10%-20%, and a powerful guarantee is provided for enhancing the durability of the concrete.
Owner:CHINA STATE CONSTR READY MIXED CONCRETE CO LTD +1
Method for preparing Cu-Fe alloy from Cu cuttings and Fe cuttings
InactiveCN111519063AImprove conductivityAccurate ingredientsTransportation and packagingMetal-working apparatusAlloyMaterials science
The invention provides a method for preparing a Cu-Fe alloy from Cu cuttings and Fe cuttings. The mass ratio of the pure Cu cuttings to the pure Fe cuttings is 4-99:1. The method comprises the steps of uniformly mixing the pure Cu cuttings with the size of (0.1-11) mm*(0.1-4.9) mm*(0.01-1.57) mm and the pure Fe cuttings with the size of (0.1-6.5) mm*(0.1-2.7) mm*(0.01-1.46) mm; pressing the mixedcuttings at 600-890 MPa and indoor temperature for 25-65 s to obtain a cold pressed billet; pressing the cold pressed billet at 650-750 MPa and 900-1000 DEG C for 35-70 s to obtain a hot pressed billet; extruding the hot pressed billet into a bar at the extrusion ratio of 25-36:1 at 800-900 DEG C and extrusion speed of 0.1-0.5 mm / s; conducting multi-pass cold drawing on the bar at indoor temperature to obtain a wire with the percentage of cross-section contraction being 99.75%-99.99%; and finally conducting annealing treatment on the wire at 200-500 DEG C to obtain the high-strength high-conductivity Cu-Fe alloy. According to the Cu-Fe alloy prepared through the method, the melting process is not needed, oxidization and burning loss of a raw material can be effectively avoided, the solid solution rate of Fe in Cu can be greatly reduced, and accordingly, the conductivity of the Cu-Fe alloy is remarkably improved.
Owner:INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
Surface porous graphene material and preparation method thereof
InactiveCN105776197AImprove the crystallization processLarge particle sizePorous graphenePore distribution
The invention discloses a surface porous graphene material and a preparation method thereof. The preparation method comprises the following steps: (1) dispersing a graphene material in a cosolvent in an ultrasonic dispersion manner till a solution is uniformly dispersed and is semitransparent and bright brown; (2) adding metallic nitrate into the solution obtained in the step (1), and stirring till the metallic nitrate is completely dissolved; (3) adding solid carbon dioxide into the solution obtained in the step (2); (4) enabling the solution obtained in the step (3) to be subjected to heating reaction in a sealed container, cooling the solution obtained after reaction, centrifuging, drying, and collecting a solid product; (5) calcining the solid product obtained in the step (5) in inert atmosphere, so as to obtain the surface porous graphene material. The preparation method disclosed by the invention is simple, easily obtainable in raw material, low in equipment requirement, simple to operate, high in reaction speed, short in preparation time, free of pollution and energy-saving and environment-friendly, and the prepared surface porous graphene material is uniform and controllable in surface pore distribution, and industrial production is easy to realize.
Owner:TAISHAN UNIV
Carboxyl nano-cellulose and preparation method thereof
PendingCN113307888ALow costThe preparation method is energy-saving and environment-friendlyCarboxyl radicalOrganosolv
The invention relates to a carboxyl nano-cellulose and a preparation method thereof. The preparation method comprises the following steps: (1) soaking cellulose in water overnight at normal temperature and normal pressure, performing uniform stirring, and adding a sodium hydroxide solution; (2) adding a halogen-substituted carboxyl compound, performing continuous stirring, then dropwise adding an acid solution to adjust a pH value to be 7, and carrying out desalting after a reaction is ended, or directly removing the sodium hydroxide solution and the halogen-substituted carboxyl compound through suction filtration to terminate the reaction; and (3) after the reaction is ended, carrying out mechanical grinding treatment such as ultrasonic treatment and homogenization to obtain the carboxyl nano-cellulose. According to the method provided by the invention, the reaction can be carried out at room temperature, and an organic solvent does not need to be added in a reaction process, so the convention that the organic solvent needs to be added in a cellulose carboxylation process is broken, the energy consumption of nano-cellulose preparation is reduced, and the cost of environmental treatment in the nano-cellulose preparation process is saved.
Owner:QILU UNIV OF TECH
Fluorescent ink and preparation method thereof
The invention discloses fluorescent ink. The fluorescent ink is prepared from an acrylic resin, an epoxy resin, phosphor, an auxiliary agent, ethanol and water. The auxiliary agent comprises polyethylene wax, a polyether siloxane copolymer emulsion, emulsive Brazilian wax and ethylene glycol methyl ether. The invention also discloses a preparation method of the fluorescent ink. The fluorescent inkcontains acrylic resin and epoxy resin as main binders. Through use of the phosphor and auxiliary agent, the fluorescent ink has good viscosity, adhesion fastness, light resistance, heat resistance and corrosion resistance. The preparation method is simple, efficient, energy-saving and environmentally friendly.
Owner:WUHU BEISI SCI & TECH PARK
Preparation method and intermediate of stearyl glycyrrhetinate
The invention discloses a preparation method and an intermediate of stearyl glycyrrhetinate. The preparation method comprises the following steps: (1) in an organic solvent, carrying out reaction on glycyrrhetinic acid and p-methyl benzene sulfonyl chloride in the presence of organic alkali, and after the reaction finishes, filtering to obtain a white solid; (2) in an organic solvent, carrying out reaction on the white solid and stearyl alcohol in the presence of alkali, and after the reaction finishes, separating the stearyl glycyrrhetinate from the system. The invention also discloses an intermediate of the stearyl glycyrrhetinate. The method disclosed by the invention has the advantages of high yield, fewer impurities and low cost.
Owner:亿利耐雀生物科技有限公司
Thermosetting resin mold release agent and preparation method thereof
The invention discloses a thermosetting resin mold release agent. The thermosetting resin mold release agent comprises the following components, 20-80 parts of artificial stone material wastes, 10-80parts of porous inorganic powder bodies, 0.5-8 parts of active materials, 0.5-10 parts of surface active agent, 1-10 parts of nanometer silica, 2-10 parts of water-borne silicone oil, 40-90 parts of film-forming resin and 0.5-3 parts of flatting agent. Compared with the prior art, the thermosetting resin mold release agent has the beneficial effects that wastes in an artificial stone plate factoryis subjected to regeneration comprehensive utilization, so that secondary pollution is avoided; the prepared mold release agent is used for mold release of thermosetting resin, and mold release effect is good; and pernicious gas released in a solidification process of the thermosetting resin can be adsorbed and decomposed. The preparation method is energy-saving, environment-friendly, innoxious and harmless, and can be industrialized.
Owner:HEZHOU UNIV
Cefpiramide drug combination
InactiveCN101822680AImprove antibacterial propertiesNot be damagedAntibacterial agentsOrganic active ingredientsAspirin DL-LysineAspirin lysine
The invention discloses a cefpiramide drug combination, which consists of the following effective ingredients in part by weight: 500 to 2000 parts of cefpiramide or pharmaceutically acceptable salt thereof (by cefpiramide), 100 to 200 parts of lidocaine, 20 to 100 parts of reduced glutathione and 50 to 100 parts of aspirin-DL-lysine. The drug combination cannot cause adverse reactions, and has a high curative effect, and moreover, the preparation method is simple and environment-friendly.
Owner:邓学峰
Preparation method of titanium-doped platinum catalyst with high catalytic activity
ActiveCN104667908AAvoid reunionAvoid stickingMetal/metal-oxides/metal-hydroxide catalystsActive componentPorous carbon
The invention discloses a preparation method of a titanium-doped platinum catalyst with high catalytic activity. The preparation method comprises the following steps: firstly, preparing a platinum precursor solution and a titanium precursor solution; then, dispersing a porous carbon nano tube in the platinum precursor solution, and doping a metal oxide foaming body catalytic framework into the titanium precursor solution; spraying the platinum precursor solution dispersed with the carbon nano tube on the titanium-doped metal oxide foaming body catalytic framework; and finally, calcining at a high temperature to obtain the titanium-doped platinum catalyst. According to the preparation method, a metal oxide foaming body and the carbon nano tube are used as dual carriers for loading platinum and the doping of the titanium is carried out, so that an agglomeration phenomenon caused by the fact that only the carbon nano tube is used as the carrier is avoided, and the problems that when only the metal oxide foaming body is used as the carrier, the active component platinum has poor bonding force on the carrier and is easy to fall off are also avoided, so that the active component platinum is uniformly dispersed, the catalytic activity of the catalyst is improved and the service life of the catalyst is prolonged. Furthermore, the preparation method has the advantages of energy conservation and environment friendliness, is easy to control and can be widely applied to the preparation of the catalyst.
Owner:陕西瑞科新材料股份有限公司
A kind of shock-absorbing and energy-absorbing polyurethane material and preparation method thereof
The invention provides a vibration and energy absorption polyurethane material and a preparation method thereof. The polyurethane material is prepared by reacting raw materials comprising an isocyanate reactive component A and an isocyanate component B, the isocyanate reactive component A comprises a polyalcohol component A1, a foaming agent A2 and a catalyst A3, wherein the polyalcohol componentA1 comprises bio-based polyol of which the mass proportion is not lower than 50%. The prepared vibration and energy absorption polyurethane material is relatively good in vibration and energy absorption effect, excellent in comprehensive performance, green and environment-friendly. The preparation method is simple, convenient and easy.
Owner:WANHUA CHEM BEIJING +1
Method for preparing mesoporous graphene material
The invention discloses a method for preparing a mesoporous graphene material. The method comprises the steps that step 1, graphene oxide is added to deionized water, polymaleic acid is added, and ultrasonic stirring is conducted until the graphene oxide and the polymaleic acid are completed dispersed to obtain graphene oxide dispersion; step 2, sodium chloride is added into the graphene oxide dispersion and stirred until the sodium chloride is completely dissolved, and microwave chemical reaction is conducted for 2 hours to obtain second dispersion; step 3, the second dispersion is added intoa reduced pressure distillation reaction kettle for reaction for 4 hours, and viscous fluid is obtained after cooling is conducted; step 4, the viscous fluid is added into a mould for heating reaction for 2 hours to obtain a constant temperature curing mould; step 5, the constant temperature curing mould is placed into absolute methanol for sealed electrolytic reaction for 5 hours, and the deionized water is added for sealed reflux electrolytic reaction for 2 hours to obtain a mesoporous graphene oxide material; step 6, reduction reaction is conducted on the mesoporous graphene oxide materialfor 3 hours to obtain the mesoporous graphene material. The problem that the graphitization degree of the mesoporous graphene material is nonuniform is solved.
Owner:浙江景仁科技有限责任公司
High-entropy polyurethane and preparation method thereof
InactiveCN111607060AImprove mechanical propertiesLower glass transition temperaturePolyesterVitrification
The invention discloses high-entropy polyurethane and a preparation method thereof. The high-entropy polyurethane is prepared by reacting a polyurethane prepolymer with a chain extender, and the raw materials for preparing the polyurethane prepolymer comprise the following components in percentage by weight: 38.0%-63.0% of a polyester polyol, 32.0%-37.0% of a diisocyanate and 5.0%-25.0% of a plasticizer. The high-entropy polyurethane prepared by the invention not only has higher mechanical property, but also can reach lower glass-transition temperature, is extremely insensitive to temperature,and can be suitable for regions with variable climates.
Owner:扬州雷应精密科技有限公司
A kind of fluorescent ink and preparation method thereof
Owner:广州大尊照明设计有限公司
Method for preparing porous magnesium silicate by using ball milling method and prepared magnesium silicate
InactiveCN113120914AEasy to prepareThe preparation method is energy-saving and environment-friendlyMagnesium silicatesWater contaminantsSilicic acidPhysical chemistry
The invention discloses a method for preparing porous magnesium silicate by using a ball milling method, and relates to the technical field of inorganic functional material preparation, raw materials are mixed for reaction by using a ball mill, and a porous magnesium silicate powder material is obtained after centrifugal drying. The invention also provides magnesium silicate prepared by the preparation method. The preparation method has the beneficial effects that the obtained magnesium silicate is in a sheet shape of about 200 nm, the specific surface area reaches 800m<2>.G<-1>, and the magnesium silicate has the excellent characteristics of relatively large pore structure, relatively large specific surface area, charge on the surface and the like. The adsorption rate of Cu<2+> can reach 80% or above, and the maximum adsorption capacity can reach 223.05 mg / g. The maximum adsorption capacity of methylene blue can reach 300 mg / g. The preparation process does not need any solvent, does not need heating treatment, is energy-saving and environment-friendly, is easy for large-scale application and large-scale industrial production, and has a wide application prospect in the aspect of sewage treatment.
Owner:BEIJING UNIV OF CHEM TECH +1
Preparation method for high-selectivity dopamine platinum carbon catalyst
InactiveCN104785295AGood choiceUniform activityOrganic-compounds/hydrides/coordination-complexes catalystsActivated carbonDopamine
The invention discloses a preparation method for a high-selectivity dopamine platinum carbon catalyst; the dopamine platinum carbon catalyst is prepared with a dopamine precursor solution and an activated carbon-doped platinum precursor solution as raw materials. The preparation method not only solves the problems that a traditional precipitation method and a traditional impregnation method are low in activity, poor in selectivity, short in service life and the like, and also keeps the particle size distribution and particle size similar to those of a colloidal platinum catalyst.
Owner:杭州创培信息科技有限公司
Modified glass steel bar applied for reinforcing concrete as well as preparation method and application of modified glass steel bar
The invention discloses a modified glass steel bar applied for reinforcing concrete as well as a preparation method and an application of the modified glass steel bar. The modified glass steel bar isobtained by dipping continuous glass fibers in an unsaturated polyester resin solution, continuously extruding, drawing and molding the dipped continuous glass fibers, and cutting to obtain the product, wherein the unsaturated polyester resin solution comprises unsaturated polyester resin, aramid fibril fibers and inorganic fibers. According to the improved glass steel bar provided by the invention, the strength is greatly improved, the compatibility of the glass steel bar-steel bar and concrete is good, and the problem that the performance difference between a polymer material and concrete isrelatively large is solved, so that the strength of the concrete is reinforced, and the corrosion resistance and water seepage resistance of the concrete material are improved. Moreover, the preparation method is energy-saving and environment-friendly, can be used for preparing high-strength standard concrete materials, and is particularly suitable for building materials with high requirements onconcrete strength, such as load-bearing walls.
Owner:SHANGHAI HUDA INVESTMENT & DEV CO LTD +1
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