324results about How to "Realize industrial mass production" patented technology

The present invention is foamed polypropylene material and its production process. The foamed polypropylene material is produced with polypropylene resin 30-97 wt%, other olefin polymer 0-57 wt%, foaming agent 2-20 wt% and cross-linking assistant 0.1-5 wt%, and through a radiation cross-linking process including smelting the mixture at 110-160 deg.c, blending, shaping and radiation cross-linking in the radiation dose of 5-60 kGy; and a high temperature foaming process of normal pressure foaming at 200-350 deg.c or pressurized foaming at 200-300 deg.c. The present invention has a radiation cross-linking process superior to chemical cross-linking process with likelihood of breaking molecular chain and is suitable for industrial production, and the foamed polypropylene material has high physical and mechanical performance and high heat resistance.

The invention belongs to the technical field of functional material preparation, and relates to a novel method for preparing graphene through carrying out ultrasonic stripping on graphite. The method comprises the following steps: uniformly mixing graphite powder and an intercalator in certain proportion in an organic solvent, carrying out stripping on the obtained mixture a certain time by using an ultrasonic water bath, carrying out centrifugal separation on the obtained object, and filtering the obtained product so as to obtain a graphene material. In the traditional process for preparing graphene through ultrasonic stripping, in the invention, a series of compounds such as naphthalene and the like are taken as an intercalator for preparing graphene. Compared with the prior art, the graphene prepared by using the method disclosed by the invention has the advantages of high quality, excellent performances, less defects, low impurity content, and the like; and especially the method is a physical process, thereby ensuring the perfect performances of the graphene. In addition, the method disclosed by the invention has the advantages of simpleness, easiness for operation, low preparation cost of products, high concentration of synthesized graphene dispersion liquid, and uneasiness for gathering, and has a good application prospect in the photoelectric field of graphene materials.

A preparation method of a three-dimensional needling carbon/carborundum composite material bolt adopts a three-dimensional needling fiber prefabrication body to prepare the composite material bolt. Pyrolytic carbon is deposited on the prefabrication body, carborundum substrates are deposited through chemical vapor infiltration (CVI), and a bolt bar blank and a bolt cap blank are obtained. The carborundum substrates of the bolt bar blank and the bolt cap blank which are obtained through machining are deposited through the CVI, a carborundum anti-oxidation coating is deposited through the CVI, and a three-dimensional needling C/SiC composite material bolt end product with the shear strength being 80-100MP is obtained. Compared with the prior art, the preparation method has the advantages that the number of times for getting into a furnace is reduced by 6-10, the densifying period is shorter, and the production cost is reduced. By means of a test of a CK6180-3000 numerically controlled lathe, the preparation method is small in diamond grinding wheel abrasion, hour norm for machining 30 bolt threads is reduced by about 10 hours, and as the abrasion of a grinding wheel is less, the working accuracy is improved, and industrialized batch production is achieved.

The invention belongs to technical field of nanomaterials and discloses a method for solvothermal preparation of fluorescent carbon nitride quantum dots by adoption of melamine as a raw material. The method includes steps: a) calcining melamine in a muffle furnace at a high temperature, and grinding products into yellow graphite-phase carbon nitride powder; b) scattering the graphite-phase carbon nitride powder into an alcohol solvent, adding a certain amount of alkali liquor, dissolving ultrasonically, sealing in a reaction kettle, and reacting for a while at a high temperature; c) cooling to the room temperature, collecting filtrate after vacuum filtration, and dialyzing the filtrate in a dialysis bag with a certain molecular weight cutoff until the filtrate is neutral, so that the fluorescent carbon nitride quantum dots are obtained. The method is simple in process, easy in operation, low in cost and environment friendly, and the prepared fluorescent carbon nitride quantum dots are high in purity and yield, excellent in dispersity and stability and high in fluorescence intensity and have a potential application prospect in fields of bioimaging, solar cells and the like.

The invention relates to a preparation method of a titanium oxide soluble electrode; the titanium oxide is TiO, Ti3O5, Ti4O7, Ti5O9, Ti6O11, Ti7O13, Ti8O15 or Ti9O17; the method comprises the steps of firstly, preparing the raw material into a titanium oxide block or a composite titanium oxide block formed by combining the titanium oxide with a titanium rod or a graphite rod; then, carrying out fine finishing on the titanium oxide block or the composite titanium oxide block to obtain the titanium oxide soluble electrode; a technology for preparing the titanium oxide block or the composite titanium oxide block comprises the following steps: (1) blending; (2) mixing and drying; (3) sintering by adopting a discharge plasma sintering system. The invention also provides the titanium oxide soluble electrode prepared by the method, and application of the titanium oxide soluble electrode in preparation of high-purity titanium by means of molten salt electrolysis. After the method is adopted, the titanium-containing soluble electrode which is low in contents of C and N and high in conductivity can be obtained, so that the high-purity metal titanium which is not contaminated by an anode is obtained when the titanium oxide soluble electrode is taken as the anode and/or a cathode for preparing metal titanium by means of electrolysis.

The invention discloses a method for preparing conducting polymer micro-nanofibers in a magnetic spinning mode. The method comprises the steps that 1, a magnetic spinning device is built, wherein the magnetic spinning device comprises a rotary collection disc with a permanent magnet; 2, a spinning precursor solution is prepared, wherein magnetic nano particles, high-molecular polymer and conducting polymer are mixed and dissolved in an organic solvent solution; 3, the magnetic spinning device is utilized for preparing conducting polymer micro-nano complex fibers, wherein the spinning precursor solution is injected into a feeding device, the feeding device is started, liquid drops on an opening of a spinning nozzle forms a jet flow under the effect of magnetic field force to be connected with the permanent magnet to be a bridge, a brushless direct-current motor is started to drive the collection disc to rotate, the ferrofluid jet flow is continuously pulled out under the effect of magnetic field force, and conducting polymer micro-nanofibers are wound and formed among vertical supporting columns of the collection disc. The method does not need the high voltage effect, reduces the production cost and potential safety hazards, is suitable for large-scale production and has the good application prospect, and the fibers are distributed in order.

The invention relates to a non-refrigerated infrared detector array based on temperature characteristics of a polycrystalline silicon PN junction and a preparation method thereof. The preparation method for the array comprises the following steps: step A, etching, filling and flatting a deep groove in order to divide an infrared detection unit transversely; step B, depositing an embedded oxygen layer and a top silicon layer on the front side of a bottom silicon layer; step C, forming an insulated isolation groove on the front side of the top silicon layer in each infrared detection unit and manufacturing a polycrystalline silicon conducting wire on an insulated cantilever beam; step D, setting a plurality of tandem polycrystalline silicon PN junctions on the top silicon layer in each infrared detection unit; step E, forming a double-layer metal wiring; and step F, manufacturing a suspended insulated cantilever beam in the each infrared detection unit, and etching the bottom silicon layer to form a cavity. The preparation method uses favorable temperature characteristics of the polycrystalline silicon PN junction to obtain detection result of infrared radiation strength through measuring changes of voltage at two ends of the polycrystalline silicon PN junction.

The invention relates to a preparation method for a lutetium-aluminum garnet-based transparent ceramic. Specifically, the method comprises the following steps (a) preparing precursor powder; (b) spraying the precursor powder onto the surface of a metal carrier chip so as to form a lamellar spraying coating; (c) separating the spraying coating from the surface of the metal carrier chip and grinding the spraying coating to obtain powder; (d) molding the powder obtained in the step (c) so as to obtain a biscuit; (e) sintering the obtained biscuit and then carrying out hot isostatic pressing so as to obtain a ceramic chip; and (f) subjecting the ceramic chip obtained in the step (e) to annealing treatment so as to obtain the lutetium-aluminum garnet-based transparent ceramic. The preparation method has the advantages of simpleness, easy practicability, low cost and wide commercial prospects. The prepared transparent ceramic has excellent optical performance.

The invention relates to the field of porous diffusion layer electrode plates of fuel cells and particularly relates to a process for manufacturing the porous diffusion layer electrode plate of the fuel cell by utilizing carbon fiber paper, and the process can be used for meeting the batch industrial production needs of porous diffusion layer electrodes of the fuel cells. The process disclosed by the invention comprises the following steps of: impregnating the carbon fiber paper in a mixed solution of modified phenolic resin and epoxy resin, drying, then preparing a base plate at high temperature and high pressure, finally performing high-temperature carbonization and then preparing the porous diffusion layer electrode plate used for the fuel cell. The porous diffusion layer electrode plate after carbonization, disclosed by the invention, has the advantages of uniform porous structure, excellent gas permeability, low resistivity, high electron conduction capability, tight structure, smooth surface, a certain mechanical strength, stable chemical properties and thermal stability, and can achieve various required indexes of the porous diffusion layer electrode plate, such as the porosity is not less than 75%, the resistivity is not more than 0.05 omega.cm, and the gas diffusion coefficient is not less than 0.15cm<2>/s and the like.

The invention belongs to the technical field of function materials and relates to a preparation method of a copper-titanium-oxide mesomorphism material. The preparation method comprises the following steps of: uniformly dissolving soluble metallic copper slat and titanium salt in a mixed solution of alcohol/water according to a certain proportion, and adding a certain quantity of surfactant in the mixing process; performing hydrothermal reaction, filtering, washing, drying in the mixed solution of alcohol/water continually; and then performing thermal treatment in a muffle furnace to obtain the copper-titanium-oxide mesomorphism material. According to the preparation method, the technology is simple and convenient, the purity of the prepared material is high, the content of impurities is low, the preparation cost of the material is low, the performance of the material is excellent, and thus the material can be subjected to industrialized mass production. The copper-titanium-oxide mesomorphism material prepared by the method can serve as a photochemical catalyst responsive to visible light, and has wide application prospect in the fields of degradation of dyeing waste water and indoor harmful gas, photochemical catalysis disinfection and the like.

The invention discloses a low-cost thick-specification uniform-structure hot-rolled dual-phase steel plate based on a post ultra-fast cooling technique and a manufacturing method thereof. The steel plate comprises the following chemical components in percentage by weight: 0.055-0.085% of C, 0.20-0.50% of Si, 1.20-1.50% of Mn, at most 0.40% of Cr, at most 0.012% of P, at most 0.002% of S, and the balance of Fe and inevitable impurities. The manufacturing method comprises the following steps: (1) heating a casting blank, and carrying out controlled rolling; (2) after hot rolling, cooling to a ferrite phase-change zone in a forepart centralized laminar cooling mode; and (3) cooling to martensitic phase-change temperature below by using a post ultra-fast cooling system, and coiling. The production mode, which uses the post ultra-fast cooling technique as the core, is utilized to lower the dependence of the thick-specification high-strength hot-rolled dual-phase steel on alloy elements; and the thick-specification high-strength hot-rolled dual-phase steel has the advantages of cheap components, uniform structure and excellent and stable performance, and is suitable for mass industrial production.

The invention belongs to the field of materials of amorphous alloys and high-entropy alloys and discloses a high-entropy bulk amorphous alloy and a preparation method thereof. The high-entropy bulk amorphous alloy comprises the components of, by atomic percent, 25-35% of Zr, 25-35% of Ti, 22-30% of Be, 5-15% of Cu and M, wherein M represents one or two of Al, Fe, Ag, Ni, V and Cr; and when M represents one element, the atomic percent of M is 5-8%, when M represents two elements, M comprises Ni and another element, the atomic percent of Ni is 5-15%, and the atomic percent of the other element is 5-8%. According to the preparation method, electric arc melting is conducted under an inert atmosphere to prepare a master alloy ingot, and then copper mould suction casting/spray casting/pouring forming is adopted. The high-entropy bulk amorphous alloy provided by the invention has the characteristics of being high in amorphous forming capacity, low in density, high in specific strength and thelike; and the application range is wide.

The invention discloses hemp leaf soothing and repairing essence, and belongs to the field of cosmetics. The product comprises the following components: a penetration enhancer, a whitening agent, a soothing agent, an allergy-relieving repairing agent and a skin conditioner, wherein the allergy-relieving repairing agent comprises a hemp leaf extract, carboxymethyl chitosan, a chia seed fermentationrepairing factor and an oat kernel extract. Carboxymethyl chitosan, the hemp leaf extract, the chia seed fermentation repair factor and the oat kernel extract are used as the allergy-relieving repairagent, so that the allergy-relieving repair agent has a synergistic effect and can achieve an instant and long-acting skin allergy-relieving/soothing effect in cooperation with the soothing agent inthe formula; in addition, through mutual cooperation with the skin conditioner, the penetration enhancer and the whitening agent, the cannabis sativa leaf soothing and repairing essence has excellentskin repairing performance, acne removing performance and whitening performance at the same time. The invention also discloses a preparation method of the cannabis sativa leaf soothing and repairing essence, and the method is simple to operate and can be industrially produced on a large scale.

The invention provides a preparation method for freeze-dried Chinese yam superfine micro-powder. The preparation method comprises the following steps: selecting materials and washing; peeling off and slicing; lyophilizing; crushing to obtain superfine micro-powder and sealing and packaging; after selecting the materials and washing, pre-cooling Chinese yams; then peeling off and slicing, wherein the pre-cooling temperature of the pre-cooling step ranges from-27 DEG C to -30 DEG C and the pre-cooling time of the pre-cooling step lasts for 3h; the slicing thickness in the step of peeling off and slicing is 3-5mm; the temperature in the lyophilizing step ranges from -35 DEG C to -45 DEG C; the water content of the lyophilized materials is less than or equal to 3%; the step of crushing to obtain the superfine micro-powder adopts a vibration type superfine micro-powder crusher to crush the materials; the temperature of the materials is controlled to -10 DEG C in the crushing process. According to the preparation method for the freeze-dried Chinese yam superfine micro-powder provided by the invention, immersion by adopting color-protecting solution and enzyme deactivation are not needed and the loss of heat-sensitive components of the prepared Chinese yam micro-powder is small; the loss of nutrition ingredients of the raw materials is little, the reconstitution property is good and the medical value is high.

The invention discloses a method for producing metallurgy-grade alumina by taking pulverized fuel ash and recycled ammonium salt as raw materials. The method comprises the following steps: (1) preparing materials; (2) roasting; (3) dissolving; (4) crystallizing; (5) carrying out a liquid-solid ammonolysis reaction; (6) grinding and removing sulfur; and (7) performing low-temperature Bayer aluminum production. The method disclosed by the invention has the advantages that an aluminum salt ammonolysis method suitable for strong acid and weak base is adopted, namely liquid-solid or gas-solid ammonolysis is performed, the production efficiency is improved by over 60 percent compared with that a liquid-liquid ammonolysis method, the process conditions of the ammonolysis method are optimized, optimal process parameters are determined, the obtained product, namely crude aluminum hydroxide, is easy to filter and wash, the model selection of equipment is simple, and industrial mass production can be realized.