978results about How to "The production process is easy to control" patented technology

The invention relates to porous concrete and a preparation method thereof, in particular to novel nano porous concrete which is prepared by taking thixotropic colloid as a template agent to form a uniform-water-phase three-dimensional network nano porous structure and adding cementing materials, fine aggregate, coarse aggregate, an admixture and an additive. The nano porous concrete has the characteristics of being light, high in strength and low in heat conductivity, can be prefabricated into bricks, building blocks, plates, and assembly type stairs, wallboards, balcony slabs and roof panel parts in a factory, can be also cast on a construction site, and further can be prepared into mortar, thereby having remarkable practical significance on promotion of development of housing industrialization and green building concrete material in our country.

The invention relates to a bipolar plate for a liquid flow energy storage battery and a preparation method. The bipolar plate employs a carbon plastic composite plate with a thickness of 0.5-5mm as a matrix material. Conducting layers with a thickness of 1-1000 microns are coated on the surface of one side or surfaces of two sides of the matrix. The bipolar plate combines advantages of the carbon plastic composite plate and a graphite plate, decreases the contact resistance between an electrode and the bipolar plate, and finally decreases the Ohm internal resistance of the liquid flow energy storage battery. The bipolar plate raises the energy efficiency and the voltage efficiency of the liquid flow energy storage battery, and therefore the working current density is increased, thus weight, volume and cost of a battery with the same output power are all decreased.

The invention discloses a modified high-nickel positive electrode material coated with a fast ion conductor and a preparation method of the modified high-nickel positive electrode material. The high-nickel positive electrode material comprises a substrate, wherein the substrate is a compound LiNi<1-x-y>Co<x>Mn<y>M<z>O<2> shown in a formula I, in the formula I, x is more than 0 but less than or equal to 0.20, y is more than 0 but less than or equal to 0.20, z is more than 0 but less than or equal to 0.1, and M is arbitrary one or more of elements of Al, Mg, Ti, Zr, Mn, Ni, Sn, Co, Zn, W, Mo, Ru, Ca, Sr, Ba, B, Y, V and Nb. The preparation method comprises the following steps of washing and drying the high-nickel positive electrode material, uniformly mixing the high-nickel positive electrode material and an appropriate amount of coating agent, and performing sintering and sieving to obtain the modified high-nickel positive electrode material coated with the fast ion conductor. The fastion conductor is coated by washing and surface drying methods, the alkali amount of a surface of the positive electrode material is reduced, side reaction of the material and an electrolyte is reduced, and the high-temperature stability and the safety of the material are improved; and by doping and coating the surface with the fast ion conductor, the energy density, the rate performance and the cycle property of the material are improved, and the long cycle lifetime of a battery is finally prolonged.

The invention relates to a radar aluminum plating transfer coating suitable for a seamless molding process and a preparation method thereof. The coating comprises the following components in percentage by weight: 0 to 4 percent of amino resin, 0 to 15 percent of cellulose ester resin, 3 to 28 percent of polyacrylate resin, 0 to 10 percent of nitro-cotton resin, 0 to 6 percent of vinyl acetate chlorate resin, 0 to 2.8 percent of additive, and 70 to 85 percent of solvent. The preparation method comprises the following steps of: adding the solvent and the resin components into a reaction kettle; stirring the mixture and then adding the additive into the mixture; and after adjusting the solid content and the viscosity, continuously stirring, cooling and filtering the mixture to obtain a product. Compared with the prior art, the radar aluminum plating transfer coating has the advantages of high production efficiency, low energy consumption, good process adaptability, good molding effect, easy elimination of seams, easy control of production, high smoothness degree, temperature resistance, good flexibility and the like.

The present invention is wet process of extracting vanadium and/or molybdenum form waste petrochemical catalyst alumina carrier containing V, Mo and other elements. The wet process includes high-temperature deoiling the catalyst in natural granularity, mixing with sodium carbonate, high-temperature oxidation and roasting in a kiln or furnace to obtain water soluble sodium vanadate and sodium molybdate; countercurrent water soaking of the chamotte to obtain solution containing V and Mo in certain concentration, adding calcium salt and magnesium salt to eliminate P and other impurities, addingammonium salt solution into the clear solution to obtain ammonium metavanadate, decomposing and melting ammonium metavanadate to obtain V2O5 product; adding acid to the supernatant and organic phase extraction of Mo, ammonia water reverse extraction to obtain ammonium molybdate, and adding acid to precipitate ammonium tetramolybdate or molybdate product.

The invention relates to a method for preparing opening micropore plastic material though slack-melting, extruding and molding. The method includes the processes: after reaching from a feeding device arranged on a double piston extruder to a heating material cylinder, preheating plastic powder with particle size of 40-1500 meshes is extruded by the piston driven by a hydraulic driver and compacted, transported and heated constantly; when the surface temperature of the plastic powder reaches the melt temperature of Tf plus or minus 20 DGE C, the power is extruded from a machine head and a die. Then, extruding matters are cooled and set by a cooling-traction device and the products are finished. By regulating the particle size of the powder, addictive and forming process conditions and so on, the invention can control opening rate, size and distribution of the aperture; the invention has simple process, short production cycle, low forming temperature and pressure as well as short forming time; besides, the invention can greatly reduce the production cost can not be degraded easily when the plastic is processed and can be widely applicable to molding of the opening micropore products of thermoplastic powders, thermosetting power and so on.

The invention relates to a process for preparing polyetheretherketone products, which is characterized in that the process comprises adopting Na2CO3 to be condensating agent, leading 4, 4'- difluorobenzophenone, hydroquinone and diresorcinol to have polymerization reaction, improving the reaction temperature after producing the relative prepolymer, and secondly adding hydroquinone to be chain extender to react for a period of time to prepare polyetheretherketone products with high viscosity.

The invention relates to a gadolinium-containing sintered neodymium-iron-boron rare earth permanent magnet alloy and a preparation method thereof. The permanent magnet alloy comprises components in the following formula: Re[alpha]Gd[beta]B[gamma]MxNyFe[100-alpha-beta-gamma-x-y], wherein the weight percentage beta of the gadolinium element is more than 0.50 and less than or equal to 25. Through the method for adding the Gd element into a sintered Nd-Fe-B magnet, a sintered Nd-Fe-B permanent magnet with high coercive force and high temperature resistance is prepared. The coercive force temperature coefficient beta of the prepared magnet is reduced, so the coercive force of the magnet at high temperature is improved and the magnet has the high temperature resistance.

The invention discloses a 600MPa high strength weathering steel and the manufacturing method, which is characterized in that: the 600MPa high strength weathering steel adopts electric stove-thin slab continuous casting and rolling process for preparation; the main chemical components of the refined molten steel for preparing the high strength weathering steel are: C: 0.045 wt % to 0.07wt%, Si: 0.10 wt % to 0.29wt%, Mn: 0.8 wt % to 1.5wt%, P: 0.005 wt% to 0.030wt%, S: 0.002 wt% to 0.008 wt%, Cu: 0.20 wt% to 0.5wt%, Cr: 0.3 wt% to 0.7wt%,Ni: 0.15 wt % to 0.35wt%, Ti: 0.06 wt% to 0.079wt%, Nb: 0.035 wt% to 0.050wt%, Alt: 0.025 wt% to 0.050wt%. The 600MPa high strength weathering steel has the advantages of low cost, strong competitiveness, cold formability, good welding performance and application to tower frame, heavy duty automobile, bridge, container, railway vehicle manufacture.

The invention discloses a method for producing hydroxy cobalt oxide, comprising the following steps of: firstly, preparing a cobaltous sulfate solution with cobalt content of 75-85g/l; adjusting a pH value of the solution to be 3.0-4.5; adding EDTA (Ethylene Diamine Tetraacetic Acid) into the solution according to the proportion of cobalt to EDTA of 100:(1-3); preparing sodium hydroxide solution with alkali concentration of 7-9mol; performing cocurrent flow on two solutions and flowing into a reaction groove; introducing the air for performing synthetic reaction; controlling the reaction temperature to be between 50 and 70 and a pH value to be between 10.0 and 12.0 for reacting for 15-25 hours; flowing into an aging groove for aging for 50-60 minutes; and finally, filtering, washing and slurrying to prepare a hydroxy cobalt oxide solid product. According to the method, the production process is controllable, particles of the product are uniformly distributed with good consistency, the shape is spherical and the product has good dispersibility; and the production process is free of ammonia nitrogen pollution, so that continuous production is realized, and the equipment utilization rate and the production efficiency are improved.

The invention discloses a preparation method of a water-blush-resistant fluoride and siloxane modified waterborne pressure-sensitive adhesive for a polyethylene protective film, and the method is used for synthesizing a cross-linking type water-blush-resistant fluoride and siloxane modified waterborne pressure sensitive adhesive with less emulsifier dosage and excellent performance by introducing an organic siloxane monomer and a fluoride-containing vinyl monomer to perform copolymerization modification in a polymerizing process, compounding by utilizing an emulsifier, and adopting a seed emulsion polymerization method. The invention also provides a preparation method of the polyethylene protective film, and the prepared protective film is excellent in water blush resistance, and guarantees that the surface of a protected material does not have residual adhesive of the torn film and is not polluted after the protective film is used outdoors for a long time according to the requirement.

The invention relates to a multifunctional bio-charcoal and a preparation method thereof. According to the technical scheme, the preparation method comprises the steps of dipping biomass into 1-15wt% caustic alkali solution for 1-50h, washing with water to be neutral, and drying to obtain treated biomass; then charring the treated biomass in a tube furnace in mixed gas at 300-900 DEG for 1-130h to obtain the multifunctional bio-charcoal. The biomass is one of rice straw, wheat straw, sawdust, wood, green grass, fruit peel and animal tissue waste; the biomass contains 30-60wt% of volatile organic carbon of charcoal, 10-40wt% of fixed carbon, 1-30wt% of ash and 10-60wt% of water. The preparation method disclosed by the invention has the characteristics of low production cost, high yield, simple process, controllable production process and environment friendliness, and the prepared multifunctional bio-charcoal has a good adsorption effect on heavy metals and high stability and can be used for repairing water bodies, solid matrixes and soil which are polluted by heavy metals.

The invention discloses a preparing method of fiber reinforced polypropylene resin particle of continuous long-glass (LGFPP), which comprises the following steps: blending 20-80% composite yarn with glass fiber, 5-60% thermoplastic polypropylene resin and 1-15% adjuvant; heating; fusing; squeezing; graining; setting the weight rate of modified polypropylene fiber and glass fiber at 1:99-50:50 as the component of composite yarn.

The invention relates a three-system organic photovoltaic device based on graphene quantum dots and a preparation method of the three-system organic photovoltaic device. According to the preparation method, the design limitation of an original binary organic photovoltaic device is broken through, and a spin coating technique and a thermal evaporation film plating technique are adopted on transparent conductive glass to reach the purpose of enhancing the device energy conversion efficiency. The three-system organic photovoltaic device uses a three-system coexistence system including an organic donor and an organic acceptor as well as the graphene quantum dots as an organic active layer, the donor and the acceptor are dissolved in chlorobenzene containing the graphene quantum dots in a certain proportion, and a three-system coexistence structure active layer is prepared only by only requiring the spin coating, so that the cost is low, the operation is simple and the conversion efficiency of the organic photovoltaic device is effectively improved.

The invention relates to an industrial production method for semi-crystal poly(aromatic ether nitrile), which belongs to the field of polymer material. The method comprises the following steps: 2, 6-dichloro benzonitrile and hydroquinone are taken as raw materials; anhydrous potassium carbonate is taken as a catalyst; in the presence of a solvent and a dehydrating agent, the raw materials and the catalyst react under atmospheric pressure to obtain the poly(aromatic ether nitrile) homopolymer with low molecular weight and regular chain segments; and then the molecular weight of polymer is increased through pressurization, so as to obtain the semi-crystal poly(aromatic ether nitrile) polymer with high molecular weight. Due to the increase of crystallinity and molecular weight, the mechanical properties and heat resistance of the semi-crystal poly(aromatic ether nitrile) polymer are obviously improved.

The invention discloses a PBAT composite film based on irradiation modification and a preparation method thereof. The composite film comprises, by weight, 100 parts of PBAT, 10-100 parts of remaining biodegradable materials, 0.1-7 parts of compatilizer, 0.1-6 parts of irradiation sensitizer, 0.1-5 parts of antioxidant, 0.1-4 parts of light stabilizer, 0.1-5 parts of anti-ultraviolet agents and 0-4 parts of lubricant. Compared with the prior art, by means of the PBAT composite film based on the irradiation modification, the biodegradability of the material is maintained, the excellent mechanical strength, barrier performance, aging resistance and the like are achieved, and the application of the biodegradable film is expanded.