18results about How to "Suitable for industrialization" patented technology

This application relates to the field of organosilicon polymer materials, specifically disclosing a method for preparing and applying a functionalized MQ silicone resin. A method for preparing a functionalized MQ silicone resin includes the following steps: (1) raw material pretreatment; (2) simultaneous addition reaction: mixing and reacting a hydrogen-containing MQ silicone resin, a terminal olefin monomer containing a benzocyclobutene functional group, and a terminal olefin monomer containing a C-F bond; (3) post-treatment to obtain the functionalized MQ silicone resin; wherein the molar ratio of Si-H bonds in the hydrogen-containing MQ silicone resin, C=C bonds in the terminal olefin monomer containing a benzocyclobutene functional group, and C=C bonds in the terminal olefin monomer containing a C-F bond is 1:(0.2-0.6):(0.1-0.4). This application enables the synergistic effect of the rigid benzocyclobutene group and the fluorinated flexible segment, one-step grafting, and structural controllability, ultimately preparing a functionalized MQ silicone resin with excellent dielectric properties, high temperature resistance, low-temperature flexibility, good hydrophobicity, and excellent mechanical strength.

The invention relates to high-solid-content AlN ceramic slurry for tape casting, a substrate and a preparation method of the substrate, and belongs to the field of ceramic substrates. The ceramic slurry is prepared from the following components in percentage by mass: 60 to 68 weight percent of high-purity AlN powder, 3 to 6 weight percent of dispersing agent, 3 to 5 weight percent of binding agent, 4 to 6 weight percent of plasticizer, 3 to 6 weight percent of sintering aid and 32 to 45 weight percent of solvent, the mass ratio of the plasticizer to the binder ranges from 3: 5 to 4: 5. By regulating and controlling the proportion of the dispersing agent in the AlN ceramic slurry and the solid content of the high-purity AlN powder, the slurry has excellent flowability, dispersity and stability while maintaining high solid content, and is suitable for a tape casting process. The AlN ceramic substrate prepared through sintering is high in density and excellent in heat conductivity, and engineering application can be achieved.

This invention relates to the field of high-purity aluminum and aluminum alloy production technology, and particularly to a porous alumina ceramic material, its preparation method, and its application. The material comprises a composite aggregate and an organic binder, wherein the mass ratio of the composite aggregate to the organic binder is 47:3. The composite aggregate comprises 9 wt%–17 wt% inorganic binder and 83 wt%–91 wt% aggregate particles. The inorganic binder comprises: 40 wt%–50 wt% B₂O₃, 20 wt%–29 wt% Al₂O₃, 10 wt%–15 wt% SiO₂, 9.4 wt%–14.4 wt% MgO, 0–0.5 wt% Na₂O, 0–0.5 wt% K₂O, and 0–10 wt% Re₂O₃, where Re is a rare earth element. This method uses corundum or α-Al₂O₃ as a framework and rare earth composite oxides as an inorganic binder. A high-temperature reaction forms sintering necks between the aggregate particles, resulting in a porous alumina ceramic with a bimodal pore distribution. Two different pore sizes are distributed in situ on the surface of the skeleton particles and the sintered neck, achieving a dual-capture filtration effect for aluminum molten inclusions. This solves the problem that filters with large pore sizes cannot simultaneously filter small-grain-sized impurities.

The present application provides a kind of herbal shoe pad and its preparation method and application, the preparation method includes the following steps: herbal raw material is crushed to obtain herbal short hair, then mixed with chemical fiber, by air laying to obtain cotton-like mixture, then the upper and lower surfaces of cotton-like mixture are attached with non-woven fabric, and the herbal shoe pad is obtained after heat bonding.The herbal shoe pad provided by the present application can make the shoe pad more environmentally friendly in an industrial mass production mode, while also achieving the use of raw herbal state to absorb foot sweat, decompose and dilute odor, achieve uniform structure, controllable thickness, wear-resistant and usable through air laying and heat bonding, and have the characteristics of original ecology, high adsorption and easy degradation.

The present invention relates to the technical field of camptothecin derivative preparation, particularly to a camptothecin derivative synthesis method, which uses 2-nitroacetophenone and isopropylamine as raw materials, and the camptothecin derivative is obtained through a Mannich reaction, a methylsulfonylation reaction, a nitro reduction reaction and a ring closing reaction. According to the synthetic method of the camptothecin derivative, the complex camptothecin derivative is split into two segments 1-(2-aminophenyl)-3-(N-isopropyl-N-methylsulfonylamino) propan-1-one and a compound V which are easy to prepare, and finally, a plurality of rings and chemical bonds are constructed simultaneously through one-step efficient ring closing reaction. The yield attenuation caused by progressive multiplication of the yield in the traditional linear synthesis is avoided, and the total yield is improved.

The invention discloses a high-fracture-toughness silicon nitride ceramic ball and a preparation method thereof, and belongs to the field of high-performance structural ceramic materials. The ceramic ball is prepared by taking high-purity alpha-SiN powder as a matrix and adopting a composite sintering aid system composed of an oxygen-free rare earth compound, aluminum nitride and beta-SiN seed crystal through an air pressure sintering process controlled by program pressure. Under the synergistic effect of the auxiliary system and a specific process, 'bimodal distribution 'beta-SiN columnar crystals and high-melting-point and high-toughness intergranular phases are generated in situ in the material, so that the fracture toughness of the material is remarkably improved on the premise of not sacrificing hardness and strength. The fracture toughness of the silicon nitride ceramic ball is up to 8.5-11.0 MPa.m / , the bending strength is 750-1050 MPa, and the silicon nitride ceramic ball is particularly suitable for precision bearings under high-speed and high-load working conditions, such as a wind power generation main shaft, an aerospace engine main shaft and the like.

The invention discloses a composite sensing electrode and a preparation method and application thereof. The electrode comprises a basic electrode, an Al / Co-MOFs / rGO layer and a bifunctional monomer molecularly imprinted polymer film, wherein the Al / Co-MOFs / rGO layer and the bifunctional monomer molecularly imprinted polymer film cover the surface of the basic electrode. The preparation method comprises the following steps: preparing an Al / Co-MOFs / rGO suspension liquid, dripping the suspension liquid on the surface of an electrode, drying the electrode, placing the electrode in a solution containing o-phenylenediamine, dopamine and template molecules, carrying out an electropolymerization reaction, and demolding to obtain the electrode. The composite sensing electrode provided by the invention has the advantages of multiple binding sites, uniform dispersion, good conductivity, good structural stability, strong specific recognition capability and the like, can realize rapid and accurate detection of perfluorinated and polyfluoroalkyl substances, can effectively reduce false positive records existing in the detection process, and can be widely applied to detection of perfluorinated and polyfluoroalkyl substances. The method has the advantages of short detection period, high detection sensitivity, high accuracy and the like, and is high in use value and good in application prospect in the fields of environment monitoring, food safety, water quality condition diagnosis and the like.

The invention discloses a synthesis method of a compound 5-bromo-[1, 1 '-biphenyl]-3-alcohol, and belongs to the technical field of organic synthesis. The synthesis method comprises the following steps: mixing a copper catalyst, alkali, a ligand, 1-phenyl-3, 5-dibromobenzene and a solvent, and stirring to react under the protection of inert gas to obtain a reaction solution; and carrying out post-treatment to obtain the 5-bromo-[1, 1 '-biphenyl]-3-alcohol. According to the invention, the compound 1-phenyl-3, 5-dibromobenzene is used as a raw material, the target compound 5-bromine-[1, 1 '-biphenyl]-3-alcohol is obtained through a copper-catalyzed nucleophilic aromatic substitution reaction and a one-step reaction, the steps are simple and short, the reaction conditions are mild, the post-treatment and purification are simple, an expensive catalyst is not needed, and the method is a novel method for preparing the 5-bromine-[1, 1'-biphenyl]-3-alcohol. And a potential route is provided for large-scale production of 1, 1 '-biphenyl]-3-alcohol.

A method for preparing di-(2-hydroxyisopropyl)benzene, a key intermediate of hydroquinone. The method comprises the following steps: (1) reacting diisopropylbenzene and an oxygen-containing gas in the presence of an alkali and an initiator to obtain a liquid containing solid di-(2-hydroxyisopropyl)benzene; (2) separating and purifying the solid di-(2-hydroxyisopropyl)benzene to obtain a di-(2-hydroxyisopropyl)benzene product with a content >99.95%, wherein the initiator includes one or more of azobisisobutyronitrile, diisopropylbenzene dipperoxide, and diisopropylbenzene peroxide, and the alkali includes sodium hydroxide, potassium hydroxide, or a combination thereof, and the oxidation reaction in step (1) is carried out at a temperature of 80-150°C and a pressure of 0.3-1.8 MPa.

The application discloses a purification method of eplerenone, which uses a mixture of alcohol and water as a recrystallization solvent. The technical scheme provided by the application can completely dissolve eplerenone, is friendly to the environment, has low toxicity, has high product yield and purity, has good impurity removal effect, has low dosage, and has a safer refining system, and is more suitable for industrialized and large-scale production.

The invention relates to an anti-ultraviolet polyurethane composite material, a preparation method, foam and a foaming method, and the preparation method comprises the following steps: fully mixing polyurethane, hexamethylene diisocyanate tripolymer and an anti-ultraviolet agent, and processing and extruding by using a double-screw extruder to obtain the anti-ultraviolet polyurethane composite material, and soaking the anti-ultraviolet polyurethane composite material in carbon dioxide by adopting a supercritical carbon dioxide foaming method, and instantly releasing the pressure to obtain the foam. Compared with a polyurethane composite material which is directly blended with an anti-ultraviolet agent, the polyurethane composite material disclosed by the invention can obtain better mechanical properties, more durable ultraviolet transmittance and color stability, and also obtains more excellent foaming performance.

A waveguide slot antenna scanning grating lobe suppression method and system based on 1-bit coding solve the problems that an existing slot antenna is complex in structure and limited in suppression effect when grating lobes are suppressed, modeling is conducted on a waveguide line source through electromagnetic simulation, 1-bit coding is conducted on the designed waveguide line source, and the suppression effect is improved. A genetic algorithm is adopted to carry out iterative optimization on a coding sequence, an optimization function is constructed by taking the lowest grating lobe level as an optimization target, and a waveguide slot array formed by optimal coding distribution is solved, so that the grating lobe level of the array in the whole scanning coverage can be effectively inhibited; and the internal structure and the external arrangement of the waveguide slot antenna do not need to be complexly modified, so that the design process is simple, the grating lobe level suppression effect is good, and the waveguide slot antenna is particularly suitable for mass production and industrialization.

This invention discloses a method for preparing high-density, large-particle-size spherical alumina powder, belonging to the field of inorganic non-metallic material preparation technology. The method uses industrial aluminum hydroxide or industrial alumina containing a transition phase as raw material. It involves introducing 1-10% α-alumina seed crystals and 1.0-3.0% composite mineralizer (containing boron and fluorine sources) by mass of the raw materials. After mechanical mixing, the mixture is calcined in air at 1350-1550℃ for 2-8 hours. Finally, the mixture is cooled, dispersed, and sieved to obtain the final product. This invention, through the synergistic effect of seed crystals and composite mineralizer, simultaneously achieves α-phase transformation, densification, grain growth, and morphology control of alumina powder under mild calcination conditions. It successfully prepares alumina powder with an α-phase content ≥96%, true density >3.96 g / cm³, median particle size D50 ≥50 μm, and a regular spherical morphology. This method is simple, low-cost, and the product is suitable for high-filling thermally conductive fillers, showing great promise for industrial application.

The invention belongs to the technical field of medicine crystals, and provides a colchicine eutectic crystal and a preparation method and application thereof, and the colchicine eutectic crystal comprises a eutectic substance of colchicine and tartaric acid. The colchicine eutectic crystal is good in fluidity, the solubility is effectively improved compared with a raw material medicine, and the photo-thermal stability is remarkably improved. The preparation method of the colchicine eutectic crystal is simple in process and suitable for industrialization.

This invention provides a method for fabricating a flexible perovskite / crystalline silicon tandem solar cell module, mainly comprising: firstly, fabricating several semi-finished crystalline silicon cells; then, back-mounting them to obtain a bottom flexible crystalline silicon cell module; next, fabricating an intermediate connecting layer and a top layer of semi-finished perovskite cells on the bottom flexible crystalline silicon cell module; etching and cutting from top to bottom to obtain several vertically independent and separated perovskite / crystalline silicon tandem cells; finally, encapsulating the module to obtain the flexible perovskite / crystalline silicon tandem solar cell module. This invention integrates the fabrication processes of the bottom cell, the top cell, and the entire module, simplifying the fabrication process and significantly reducing the production cost of the flexible tandem module, making it suitable for industrialization. Furthermore, this invention also discloses a flexible perovskite / crystalline silicon tandem solar cell module fabricated using the above method.

The invention relates to an amorphous NADP solvate and a preparation method thereof. The amorphous NADP solvate disclosed by the invention is an NADP diethanol solvate or an NADP diisopropanol solvate. The preparation method comprises the following steps: adding an NADP aqueous solution with specific concentration and pH into an alcohol solvent with specific temperature, stirring, crystallizing, carrying out suction filtration, and carrying out vacuum drying to obtain the amorphous NADP solvate. The amorphous NADP solvate disclosed by the invention solves the problems of stability and fluidity, and meanwhile, the method is simple to operate, the process is easy to control, and the method is suitable for industrialization.

This invention discloses a regagliptin intermediate, its preparation method, and its applications. Specifically, this invention provides a method for preparing the compound shown in Figure 4, comprising the following steps: in the presence of a transaminase and an amino donor, the compound shown in Figure 3 undergoes a transamination reaction to obtain the compound shown in Figure 4, wherein R is H or a C1-C4 alkyl group. This invention employs an enzymatic method for preparing regagliptin, which has low raw material pollution, low cost, and is suitable for industrial application.

The present application relates to the technical field of potassium iodide, and provides a purification method of potassium iodide containing perfluorinated organic impurities, wherein the impurities in the potassium iodide crude product are perfluorinated organic compounds with the number of C atoms being greater than or equal to 6 and the mass content being greater than or equal to 20%, and the purification method comprises: adding the potassium iodide crude product into an alcohol lye to perform heating reflux to degrade the perfluorinated organic compounds; the alcohol lye is obtained by dissolving an alkaline compound containing an alkali metal or an alkaline earth metal in alcohol, and the mass concentration of the alkaline compound in the alcohol lye is less than or equal to 20%. The method of the present application is not only simple in operation and suitable for industrialization, but also can make the purity of the purified potassium iodide reach more than 98%, and the highest recovery rate can reach 97%, and the whole process does not produce three wastes, has low energy consumption and small risk, which is specifically reflected in that the amount of foam entraining particles during boiling is reduced, the risk of equipment and pipeline blockage is greatly reduced, the safety is high, and the presence of the alkali greatly increases the solubility of the perfluorinated organic impurities, and the purification efficiency is high.