38results about How to "Suitable for industrial large-scale preparation" patented technology

The invention discloses a preparation method of an ABX3 type all-inorganic perovskite nanocrystal. In the preparation process, a solvent is used in a small amount, and the raw material unit price is low (for example, an expensive PbX2 raw material is replaced by cheap lead acetate), environmental requirements are not high in the preparation process, a glove box is not required, the operation procedure is simple, and the cost of raw materials and instruments is greatly reduced. The nanocrystal can synthesize a target product in a wide temperature range of 0 to 300 DEG C in the preparation process, and the morphology, phase, size and luminous performance of the nanocrystal can be controlled by changing the raw material ratio, solvent ratio, reaction temperature and / or reaction time, for example, perovskite nanowires can be prepared at the reaction temperature of greater than or equal to 0 DEG C and less than 90 DEG C, and perovskite quantum dots can be prepared at the reaction temperature of 90 to 300 DEG C. The nanocrystal has good stability and high fluorescence quantum yield (26%-80%), and can realize full visible spectrum (400-700 nm) luminescence. The preparation method is simple in process, short in time consumption, low in cost, easy to amplify and synthesize, and suitable for industrial large-scale preparation.

The invention relates to a preparation method of tolvaptan as an arginine vessel pitressin V2 receptor antagonist. The tolvaptan and the intermediate thereof with high purity and efficiency can be obtained with the preparation method which can be used as an industrial method for mass production. Meanwhile, the invention has the advantages of reducing the emission of waste liquid, being favorable to labor protection, decreasing the production cost and improving the economic benefits.

The invention discloses nanocrystalline high-entropy alloy powder and a preparation method thereof, and relates to the technical field of powder metallurgy. The invention involves the nanocrystallinehigh-entropy alloy powder and the preparation method of the nanocrystalline high-entropy alloy powder, wherein the nanocrystalline high-entropy alloy powder comprises cobalt powder, chromium powder, iron powder, nickel powder, manganese powder, aluminum powder and titanium powder; and the metal element powder is directly mixed through a high-energy mechanical ball milling method by the preparationmethod of the nanocrystalline high-entropy alloy powder, and the nanocrystalline high-entropy alloy powder is prepared according to the specific steps. According to the nanocrystalline high-entropy alloy powder and the preparation method, through high-speed impact and grinding of grinding medium, reaction activation energy is reduced, powder activity is improved, solid diffusion among element powder is promoted, low-temperature chemical reaction is induced, and finally, the alloy powder with uniform composition and structure distribution is obtained, so that the problems of element volatilization and non-uniform components of the powdering after smelting is conducted are solved. The technical is simple in equipment, the procedure is simplified compared with a traditional method, the manufacturing cost is reduced, and the nanocrystalline high-entropy alloy powder powder the preparation method thereof are suitable for industrial large-scale preparation.

The invention relates to a preparation method of an M-choline receptor blocking agent of ipratropium bromide 1. The preparation method comprises the following steps of using ethyl phenylacetate as starting raw materials; performing reaction with isopropyl tropanol; generating phenylacetate isopropyl tropeine; then, performing substitution, reduction and addition reaction to obtain the ipratropium bromide. The method has the advantages that the operation is simple; safety and controllability are realized; the work protection is low; the preparation method is suitable for industrial production. The formula is shown as the accompanying drawing, and the molecular weight is 412.36.

The invention relates to a preparation method of a carbon nitride ultrathin sheet with an adjustable atom layer number. The preparation method comprises the following steps: weighing 3-9g of Bulk g-C3N4 to be quickly heated to 550-580 DEG C in a container for thermal expansion for 10-20min and taking the same out; immediately adding liquid nitrogen till a sample is immersed; and after LN2 is volatilized fully, repeating the steps for 5-10 times to obtain the ultrathin sheet. The carbon nitride ultrathin sheet is prepared by the following steps: weighing 0.12-1.2g of the g-C3N3 ultrathin sheet obtained in the step (1) in the container to be quickly heated to 550-580 DEG C; keeping the temperature for 10-20min; and naturally cooling the same to room temperature to obtain g-C3N4 with a single atom layer and multiple atom layers. The preparation method provided by the invention has the advantages that by replacing a commonly used organic solvent ultrasonic peeling method with a cheap and non-toxic peeling agent, the prepared g-C3N4 ultrathin sheet is fast in process, low in cost, environmental-friendly and suitable for industrial preparation on a large scale.

The invention provides a preparation method of Mn<4+>-activated fluoride fluorescent powder. The preparation method provided by the invention does not need to form a saturated solution of A2MF6, so that the requirement of the use amount of raw materials is greatly reduced; in the preparation process, the target product can be synthesized at room temperature and is convenient to synthesize; a precipitating agent is added, so that the preparation is more convenient, the operation is simpler, the synthetic steps are simplified, and the prepared fluorescent powder has better optical properties; the fluoride fluorescent powder can be well excited by ultraviolet light to blue light, especially the blue light, and has strong red light emission, wherein the red light emission peak is in the wavelength range from 600 to 650 nm; the method has the advantages of a simple preparation process and short consumed time; and the prepared material has a high luminescence quantum yield and is suitable for industrial large-scale preparation.

The invention discloses a method for preparing a novel pressure-resistant building material. The method comprises the following steps: I, mixing and uniformly stirring coal ash, a polymer, a coagulating material and water so as to obtain a mixture I; II, drying straw at 80-100 DEG C till the moisture is less than 5%, grinding in a grinding machine, and screening till the particle size is 200-300 meshes so as to obtain straw powder; III, performing ball-milling on magnesium calcium carbonate, blast furnace slag, clay, dolomite dust, feldspar powder and calcium borate in a ball-milling machine so as to obtain a mixture II, wherein the ratio of a milling media to materials is (12:1)-(20:1) in the ball-milling machine; and the ball-milling time is 50-60 minutes; IV, sequentially putting the straw powder and the mixture II into the mixture I, further adding hydroxypropyl methyl cellulose and butyl rubber, and heating and stirring at 300-380 DEG C for 40-45 minutes so as to obtain a base material; and V, introducing the base material into a mold, and performing pressurizing molding, thereby obtaining a finished product. The building material prepared by using the method has the characteristics of being high in breaking strength and high in pressure resistance.

The invention discloses a filler for a supergravity rotation bed, wherein the filler comprises a substrate filler and a composite coating on the surface of the substrate filler, and the composite coating comprises a primer combined with the substrate filler and a low surface energy substance on the primer. According to the present invention, the filler has a good surface wetting effect, and can easily disperse the liquid phase and improve the mass transfer efficiency of the liquid phase. The invention further discloses a preparation method and uses of the filler.

The invention discloses a metal polymer, a metal polymer nano-micelle as well as a preparation method and application of the metal polymer nano-micelle. The metal polymer or pharmaceutically acceptable salt or solvate of the metal polymer is shown as a formula I or a formula II; alkynyl is introduced into metal iridium and ruthenium complexes and reacts with water-soluble monoazide polyethylene glycol through a click reaction to synthesize the metal polymer, and the metal polymer can be self-assembled into a nano-micelle with a core-shell structure in an aqueous solution. The preparation method is simple and convenient, the reproducibility is good, the quality is controllable, in addition, the nano-micelle can greatly improve the biocompatibility of metal drugs, can be applied to optical treatment, and has potential anti-tumor application prospects.

The invention relates to a surface modification method of a fluoride luminescent material, and the fluoride luminescent material prepared by the method. According to the invention, a matrix material AxMFy:Mn<4+> coated with an inorganic coating layer AxMFy, and an organic solution containing metal phosphate or alkoxy silane or an organic carboxylic acid substance or organic amine, and the obtainedmixed solution is subjected to evaporation drying to obtain the surface-modified fluoride luminescent material co-coated with the organic coating layer-inorganic coating layer; according to the coating method, the corrosion resistance of the fluoride fluorescent powder is remarkably improved, the luminous intensity retention rate and the quantum efficiency retention rate of the modified fluorescent powder reaches 85-95% in a high-temperature and high-humidity environment, and the fluoride fluorescent powder can be widely applied to the field of white light LED backlight source display; afterinorganic coating, the surface defects of the fluorescent powder are reduced, and the luminous intensity and the quantum yield of the fluorescent powder are improved by 5%-15%; after coating with theorganic coating layer, the luminous intensity reducing of the fluorescent powder is less than 3%; and the surface modification method provided by the invention has the advantages that the preparationtemperature is low, the time is short, the process is easy to control, and the surface modification method is suitable for industrial large-scale preparation.

The invention provides a process for preparing lithium iron phosphate by using liquid phase cocrystallization and mechanical alloying. The method is characterized by comprising the following steps: 1) wet ball-milling: mixing various raw materials in a wet ball mill and performing wet ball-milling on the mixture for 3-5 hours, wherein the particle size of the ball-milled raw materials is controlled at 100 meshes, the molar ratio of Fe to Li to PO4<3-> to dispersing agent to doping elements in the raw materials is 1:1:1:0.01-0.015:0.005-0.007, wherein the iron source is selected form ferric oxalate, ferric oxide and ferrous phosphate, the lithium source is selected form LiH2PO4 and Li2CO3, the phosphorus source is selected form NH4H2PO4 and LiH2PO4, the dispersing agent is cetyl trimethyl ammonium bromide, and the doping elements are an arbitrary mixture of yttrium oxide, titanium oxide and chromium oxide; 2) drying: drying the ball-milled raw materials; 3) presintering: performing presintering on the dried raw materials at a temperature of 300-400 DEG C for 4-6 hours; 4) dry ball-milling: adding 1-2wt% of starch into the above-mentioned raw materials, and performing dry ball-milling on the mixture to obtain a material with a particle size of 300 meshes; 5) high-temperature sintering: performing sintering on the mixture at a temperature of 650-700 DEG C for 8 hours; 6)smashing the mixture to obtain a final product of lithium iron phosphate. The process provided in the invention is applicable to industrial large-scale preparation. The products prepared according to the process have an uniform particle size and good electrical conductivity performance.

The invention discloses a method for preparing an antimony tetrasulfide tricopper film of a solar cell absorption layer through a gas-solid reaction. A substrate is one of a molybdenum-plated film, conductive glass, soda-lime glass, quartz glass or metal foil; the purity of a Cu target material subjected to magnetron sputtering is 99.8%; the Cu target material is deposited on the clean substrate in an argon atmosphere through magnetron sputtering to form a Cu precursor film; and the obtained Cu precursor film is placed in a Sb2S3+S atmosphere for heat treatment to finally obtain the Cu3SbS4 film. According to the method, the gas-solid reaction is carried out after magnetron sputtering of the Cu precursor film, and the method has the advantages that the synthesized film is pure and single in phase formation, simple in manufacturing process, safe, non-toxic, not complex in preparation equipment, capable of achieving large-area production, easy to control in thickness and the like.

The invention discloses a large-scale preparation method for a covalence copolymer with a triazine frame. The method comprises the steps of 1, preparing a nucleophilic reagent; 2, performing a polymerization reaction, wherein the prepared nucleophilic reagent and a triazine compound are mixed in a reaction solvent under the protective atmosphere, a reaction is performed under the temperature of 80-120 DEG C, and cooling is performed to reach the room temperature to obtain a reaction mixture; 3, performing postprocessing, wherein a quenching agent is added into the reaction mixture, and filtering, cleaning and drying are performed to obtain the covalent triazine polymer. A wet method is adopted for preparing the covalent triazine polymer, reaction conditions are simple, the production costis low, and the good industrial application prospect is achieved. The preparation method has no special requirement for operation equipment, the reaction temperature is not high, and therefore industrialized enlarged production is easily performed.

The invention relates to a fibrous perovskite solar cell and a preparation method and application thereof. The solar cell takes a titanium wire serving as an electrode as the center and sequentially comprises the titanium wire serving as the electrode, a titanium dioxide compact layer, a titanium dioxide porous layer, a perovskite crystal layer, a hole transporting layer and thin gold serving as an opposite electrode from inner to outside in the radial direction of the solar cell. The prepared fibrous perovskite solar cell can greatly improve the energy conversion efficiency (which can reach up to 9%), can easily achieve big-size preparation and provides an effective guarantee for being applied to the fields of wearable equipment, smart home and the like.

The invention discloses a system and a method for extracting industrial lithium carbonate by supergravity. The system comprises a carbonizer, a solid and liquid separating device, a microwave-coupledsupergravity device, and a centrifuge device which are sequentially connected by pipelines. The system has the advantages that by combining the supergravity technique, the centrifuge device and a recycling device, the shape and particle size of the pyrolyzed lithium carbonate are averagely distributed, the distribution of small-particle and large-particle solid products is reduced, the size of centrifuge force of the centrifuge device can be adjusted according to the obtained particle size, and most of solid products with uniform particle size are thoroughly settled by the centrifuge force; asupernatant is recycled by the recycling device, so that a small amount of small particles suspended in the supernatant can be dissolved and pyrolyzed again, and be recycled; the battery-level or high-purity lithium carbonate solid product with yield rate reaching the industrial preparation standard can be obtained; the system is suitable for industrialized large-scale preparation.

The invention discloses a dry granule, dry granule glaze, high-hardness and high-wear-resistance rock plate and a preparation method thereof, and belongs to the technical field of building rock plates, the dry granule, dry granule glaze, high-hardness and high-wear-resistance rock plate comprises the following raw materials by mass: 20-35% of potassium feldspar, 10-35% of quartz, 10-25% of calcite, 5-15% of barium carbonate, 5-20% of zinc oxide, 1-2% of alpha-Al2O3 nano powder, 6-15% of nano silica, and 15-20% of chitosan, the finally prepared high-hardness and high-wear-resistance ceramic rock plate glaze surface is high in hardness and wear-resistant, the Mohs hardness is more than level 5, the wear resistance is more than level 4, and the production cost is low; the preparation method of the high-hardness and high-wear-resistance rock plate provided by the invention is simple and convenient in steps and suitable for industrial large-scale preparation, and the sintering temperature is reduced by 300-500 DEG C compared with the sintering temperature of the existing high-hardness and high-wear-resistance rock plate.

The invention provides a method for preparing an ITO film based on magnetron sputtering and etching treatment, and the method comprises the following steps: S1, rotating a substrate, and cleaning the surface of the substrate through clean water; s2, uniformly spin-coating polystyrene microspheres on the surface of the substrate; s3, performing oxygen plasma etching operation on the polystyrene microspheres to improve the sizes of the polystyrene microspheres; s4, sputtering an ITO target material on the surface of the substrate under a vacuum condition to form an ITO thin film, and depositing for a period of time; and step S5, putting the ITO film in a toluene solution for ultrasonic treatment so as to etch the polystyrene microspheres, and finally obtaining the ITO film, thereby realizing the preparation of the ITO film.