19results about How to "The preparation method is simple and controllable" patented technology

This invention provides a carboxylated nitrile butadiene latex, its preparation method, and its application. The carboxylated nitrile butadiene latex, by mass parts, is composed of the following raw materials: butadiene, acrylonitrile, methacrylic acid, emulsifier, dispersant, electrolyte, ferrous sulfate, reducing agent, molecular weight regulator, oxygen scavenger, initiator, and demineralized water. The emulsifier is a mixture of anionic and cationic emulsifiers; the anionic emulsifier is sodium dodecyl sulfate, and the cationic emulsifier is a glycosyl gemini cationic surfactant. The mass ratio of the anionic emulsifier to the cationic emulsifier is 1:0.05–0.1. This carboxylated nitrile butadiene latex not only has low gel content and high mechanical stability, but its preparation method is also simple and controllable, making it easy for industrial production.

The invention discloses a gelled cell as well as a preparation method and application thereof. Relates to the field of synthetic biology and biomedicine. The gelated cell is a cell structure without cell viability, and comprises: a carrier cell framework comprising a cell membrane which retains the membrane protein content, the type and the lipid order of an original carrier cell; the intracellular hydrogel is formed in situ in the carrier cell framework through supramolecular host-guest interaction or cross-linking reaction, and is fused with the inner surface of a cell membrane; the antibacterial substance is loaded in the intracellular hydrogel; wherein pores are distributed on the cell membrane, the intracellular hydrogel is communicated with the external environment through the pores, and the loaded antibacterial substances are exposed. The gelated cell provided by the invention can simultaneously realize targeted delivery, contact sterilization and endotoxin adsorption, and avoids the problem of secondary inflammation caused by release of endotoxin in traditional antibiotic therapy and the problem of membrane protein loss or disordered arrangement in a cell membrane coating technology.

A method for one-step preparation of methylamine by hydrogenation amination of carbon dioxide, belonging to the field of catalysis. In a fixed-bed reactor, carbon dioxide, hydrogen, and ammonia are reacted. The catalyst comprises a microporous or mesoporous silica support, and the active component includes indium, zirconium, and at least one metal promoter selected from nickel, copper, palladium, rhodium, and platinum; the In 3d... 5 / 2 The binding energy is 444.0~444.7 eV, which is more than 0.2 eV lower than that of pure indium oxide; the single-pass conversion rate of carbon dioxide is not less than 50%, the total selectivity of methylamine is not less than 80%, and the selectivity of the byproduct carbon monoxide is not higher than 20%. This invention constructs a unique In-Zr-M active center, with In, Zr, and M uniformly co-distributed at the nanoscale. By adjusting the NH3 / CO2 ratio, the ratio of dimethylamine to trimethylamine can be controlled. The catalyst of this invention exhibits excellent performance and good stability, and has broad application prospects in the fields of carbon dioxide resource utilization and green synthesis of methylamine.

The invention belongs to the technical field of preparation of polymer semiconductor materials, and particularly discloses a method for preparing a polyheptylimide photocatalyst by using organic and inorganic mixed molten salt, which comprises the following steps of: mixing high-nitrogen small organic molecules serving as a raw material with organic molten salt and inorganic molten salt in a vacuum glove box to prepare a precursor; and then carrying out high-temperature solid-phase polymerization in an inert atmosphere, washing and drying to obtain the target polyheptazinyl imide catalyst. The organic-inorganic mixed molten salt system is adopted to replace traditional pure inorganic molten salt, directional synthesis of polyheptylimide is promoted through mixed molten salt microenvironment regulation and control, the carrier transport resistance is effectively reduced, and photo-induced electron-hole recombination is inhibited. The prepared polyheptylimide has excellent photocatalytic oxidation performance, can realize H2O2 preparation through O2 activation and organic dye mineralization under visible light driving, has the advantages of simple process, low cost and good stability, is convenient for large-scale production and practical application, and has important value in the fields of energy conversion and environmental governance.

This invention discloses a ternary amorphous insulating dielectric film, its preparation method, and its applications. The ternary amorphous insulating dielectric film is composed of a material with the chemical formula Al(X)N, ​​where X is selected from any one or a combination of two or more of B, Si, Zr, and Zn. The ternary amorphous insulating dielectric film has a disordered amorphous structure. This invention uses pulsed laser deposition technology to prepare the ternary amorphous insulating dielectric film. The preparation method is simple and controllable. The prepared ternary amorphous insulating dielectric film exhibits high thermodynamic stability, high dielectric constant, and low leakage current density. It can serve as an insulating material resistant to repeated impacts from strong electric fields and high currents, and is heat-resistant, showing great promise for applications in the semiconductor field.

The application discloses a porous chromium-based composite denitration catalyst and a preparation method and application thereof, and belongs to the technical field of denitration catalyst preparation. The preparation method of the porous chromium-based composite denitration catalyst is as follows: a chromium salt, an organic ligand and an Anderson-type polyoxometalate are dissolved in water to perform a hydrothermal reaction to obtain a precursor; wherein the Anderson-type polyoxometalate is selected from one or more of (NH4)4[NiMo6O 24 H6]·5H2O, (NH4)3[CoMo6O 24 H6]·7H2O or (NH4)3[FeMo6O 24 H6]·6H2O; and the precursor is calcined, and the porous chromium-based composite denitration catalyst is obtained. Compared with a single MOF porous chromium-based catalyst, the denitration efficiency of the porous chromium-based composite denitration catalyst can be increased by more than 90%. Meanwhile, the preparation method is simple, easy to control, low in requirement on a synthesis device, can save the amount of active components, reduces the production cost of the catalyst in an all-round way, and is suitable for large-scale industrial production.

The present application provides a kind of ordinary electrochemical aluminum stamping foil water-based release agent and its preparation method.The water-based release agent includes the following weight parts of raw materials: water-based polyurethane emulsion 50-60 parts, water-based acrylic modified polyurethane emulsion 25-35 parts, silane coupling agent 2-8 parts, filler 2-6 parts, wax emulsion 2-5 parts, fluorosilicon auxiliary agent 2-7 parts, polyethylene glycol 1-3 parts and crosslinking agent 1-3 parts.The water-based release agent has good chemical solvent resistance, temperature resistance, is suitable for the peeling strength and printing adaptability requirements of ordinary electrochemical aluminum stamping foil first stamping then printing process to release agent, is environment-friendly.The preparation method of the water-based release agent is simple and easy to control, process is stable, production is efficient, is conducive to large-scale production.

The invention discloses a PtPdCuFe alloy nano enzyme material, and belongs to the technical field of nano materials and analytical chemistry. According to the technical key points, four metal atoms of platinum, palladium, copper and iron are uniformly distributed on the nanoscale to form an alloy structure, and the unique quaternary composition and atomic-scale mixing generate a synergistic effect, so that the catalyst has excellent oxidase-like and peroxidase-like activities at the same time. The invention also discloses a colorimetric sensor containing the material, and a method for detecting in a buffer system through catalytic oxidation and coupling with nitrite by using the oxidase-like activity of the material. According to the method, the peroxidase-like activity of the material is utilized, and TMB oxidation is inhibited through thiophanate-methyl in the presence of hydrogen peroxide for detection. The invention further discloses a method for synthesizing the quaternary alloy material through a one-step hydrothermal method. The method is mainly used for high-sensitivity and high-selectivity rapid colorimetric analysis of nitrite pollutants and thiophanate-methyl pesticide residues in food and environmental samples.

The present invention discloses a multi-walled carbon nanotube-supported high-entropy alloy catalyst, its preparation method and application. The high-entropy alloy catalyst consists of a multi-walled carbon nanotube support and high-entropy alloy nanoparticles supported on the surface of the multi-walled carbon nanotube support. The high-entropy alloy nanoparticles are composed of five metal elements, namely Fe, Co, Ni, Pt, and In, to form a thermodynamically stable FeCoNiPtIn high-entropy alloy solid solution phase. The high-entropy alloy nanoparticles are anchored on the surface of the support through chemical bonding and have a delocalized electron structure formed by d-p / d-d / sp hybridization. The catalyst prepared according to the method of the present invention exhibits excellent activity and durability in the hydrogen evolution reaction, can achieve long-term stable operation, and provides a reliable and efficient preparation technology solution with excellent performance for the large-scale industrial promotion of the electrolytic water hydrogen evolution reaction.

This invention discloses a two-dimensional porous silicon, its preparation method, and its application in lithium batteries, belonging to the field of materials technology. The silicon-calcium alloy powder is immersed in hydrochloric acid solution, and after the reaction is complete, it is filtered and dried to obtain siloxane powder. The siloxane powder is then heat-treated in a vacuum environment, during which the siloxane is first oxidized to SiO. x SiO x Further high-temperature processing leads to a disproportionation reaction, generating uniformly distributed two-dimensional Si / SiO2. The two-dimensional Si / SiO2 is then immersed in a hydrofluoric acid solution, where the hydrofluoric acid reacts with the SiO2. After complete reaction, the mixture is repeatedly centrifuged and washed, then vacuum dried to obtain a two-dimensional silicon material with a porous structure. The preparation method of this invention is simple, controllable, and highly practical. The two-dimensional porous silicon prepared by this method possesses a crystalline structure and an ultrathin layered structure, which can effectively mitigate volume changes in the negative electrode material and accelerate lithium-ion diffusion when used in lithium-ion batteries.

The invention relates to the technical field of catalysts, in particular to a cobalt-based phosphide nano catalytic material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a cobalt salt, urea and ammonium fluoride in water to obtain a mixed solution, placing a pretreated carbon cloth in the mixed solution, carrying out a hydrothermal reaction, taking out the carbon cloth to obtain a carbon cloth-loaded phosphating precursor, and carrying out hydrothermal reaction on the carbon cloth-loaded phosphating precursor in a protective atmosphere to obtain the carbon cloth-loaded phosphating precursor. Carrying out phosphating treatment with a phosphorus source; and carrying out constant piezoelectric deposition by taking the carbon cloth loaded cobalt phosphide as a working electrode and cobalt salt as an electrolyte to obtain the cobalt-based phosphide nano catalytic material. The cobalt-based phosphide nano catalytic material shows excellent catalytic activity, rapid reaction kinetics and good stability in HER, OER and full water splitting application, the preparation method is simple and controllable, the cobalt-based phosphide nano catalytic material is expected to replace a noble metal-based catalyst, and the cobalt-based phosphide nano catalytic material has a wide application prospect in the field of electro-catalysis energy conversion.

The application discloses poplar phellinus polysaccharide SVP-50-1 and a preparation method and application thereof, and belongs to the field of biological medicines.The poplar phellinus polysaccharide SVP-50-1 is obtained by water extraction and 50% ethanol solution precipitation of poplar phellinus fruiting bodies.The poplar phellinus polysaccharide SVP-50-1 can regulate a tumor metabolic process, inhibit the activity of a tumor cell mitochondrial respiratory chain and an oxidative phosphorylation process, thereby inhibiting the energy source of tumor cells, and achieving an anti-tumor effect.The poplar phellinus polysaccharide SVP-50-1 can play a synergistic effect when combined with radiotherapy and chemotherapy drugs.The combined treatment strategy can significantly improve the curative effect of an existing tumor treatment, while reducing adverse reactions, and provides a new optimized scheme for clinical tumor treatment.

This invention belongs to the field of high-pressure jet cutting nozzle manufacturing technology, specifically relating to a cemented carbide for jet abrasive nozzles and its preparation method. The cemented carbide for jet abrasive nozzles includes a cemented carbide matrix and a boride coating. The composition of the cemented carbide matrix is: 1wt%~3wt% cobalt, 3wt%~12wt% molybdenum carbide, 3wt%~10wt% tantalum carbide, 1wt%~3wt% chromium carbide, with the balance being tungsten carbide and unavoidable impurities. The average grain size of the tungsten carbide is 0.2~0.6μm. This invention prepares a high-strength and tough cemented carbide matrix by using a low-cobalt ultrafine-grained cemented carbide with a specific composition and a gas pressure sintering process. Then, a TiB2 superhard coating with a strong (001) texture is deposited on its surface by a controllable chemical vapor deposition technology, achieving a unity of ultra-high coating hardness and extremely high interfacial bonding force, and finally obtaining a jet abrasive nozzle composite material with excellent wear resistance, long service life, and stable performance.

The invention discloses a solid electrolyte, a preparation method thereof and a battery. The preparation method comprises the following steps: mixing a surfactant and a cosurfactant in an oily solvent to obtain a first solution; the solid electrolyte comprises at least one metal element, and inorganic salt containing the metal element and citric acid are mixed in water to obtain a second solution; mixing the first solution and the second solution to obtain a third solution; performing first heating treatment on the third solution to obtain a precursor of the solid electrolyte; the precursor is subjected to second heating treatment, the solid electrolyte is obtained, and the temperature of the second heating treatment is higher than that of the first heating treatment. Therefore, the solid electrolyte which is relatively high in purity, relatively good in chemical uniformity, relatively small in particle size, relatively good in uniformity and regular spherical in shape can be obtained, the preparation method is simple and controllable, the problem that a lithium element cannot be co-precipitated when the solid electrolyte is prepared by a reverse microemulsion method is solved, and large-scale production is easy to realize.

The invention discloses a method for preparing high-stability perovskite crystals through room-temperature spontaneous reaction, which comprises the following steps: mixing halide salt AX, halogenated metal BX2 and catalyst amino salt according to a certain proportion, and then adding a carbonic ester solvent into the mixed powder; a spontaneous chemical reaction between carbonic ester and a catalyst amino salt is utilized to induce a chemical reaction between halide salt AX and halogenated metal BX2 under a room temperature condition, and finally a high-quality and high-stability perovskite crystal is obtained. According to the method, the high-quality perovskite microcrystal can be obtained at room temperature, the limitation that conditions such as long-time high temperature and acidity are needed for preparing the perovskite microcrystal at present is broken through, and large-scale industrialization is facilitated. The high-quality and ultrahigh-stability perovskite crystal powder obtained by the method can be widely applied to the photoelectric fields of batteries, luminescence, detectors and the like.

The application provides a phosphate-modified polyester resin and a preparation method and application thereof, and a coating, and belongs to the technical field of industrial coatings.The phosphate-modified polyester resin has a main chain and a side chain containing phosphate groups.The P atom of the phosphate group has a large electronegativity, so that the phosphate-modified polyester resin has a large polarity and the phosphate group contains a hydrocarbon group, which makes the phosphate-modified polyester resin have good wettability;the phosphate group has strong acidity, can be chemically bonded with metal ions on the surface of a coated substrate, generates an organic metal phosphate, and forms an organic metal phosphate film, so as to form a "chemical bridge" between the surface of the substrate and the coating, which greatly improves the adhesion between the coated substrate and the coating, so that the surface of the coated substrate can be directly coated without chemical pretreatment when the powder coating is sprayed, thereby improving the spraying efficiency, saving the cost, and reducing the environmental pollution.

This invention provides a polyurethane, its preparation method, and its applications. The polyurethane has the following structure: where n is 5-500. The polyurethane of this invention exhibits both narrow dispersibility and good biocompatibility, thus it can be used as a medical and health material and food packaging, and has potential application value in fields such as drug delivery, gene transfer, tissue engineering, and regenerative medicine.

This invention relates to the field of interlayer technology in laminated glass, and particularly to a binary composite plasticized gradient structure PVB interlayer, its preparation method, and laminated glass. The interlayer has a three-layer gradient structure, consisting of a first surface layer, a middle sound-insulating layer, and a second surface layer from the outside in. Both the first and second surface layers contain a first PVB resin and a first composite plasticizer, which includes diethylene glycol dibenzoate and 3GO. The middle sound-insulating layer contains a second PVB resin and a second composite plasticizer, which includes a mixture of diethylene glycol dibenzoate and 3GH. This invention, through innovative material formulation and structural design, provides a PVB interlayer solution that balances high weather resistance, excellent sound insulation, strong adhesion, low plasticizer migration tendency, and additional heat insulation functions. It also includes a stable and efficient preparation method, effectively overcoming the limitations of existing technologies where performance cannot be synergistically improved.

The application relates to the technical field of electronic paste, and relates to lead-free sealing silver paste for vacuum glass and a preparation method thereof. The lead-free sealing silver paste comprises spherical silver powder, lead-free low-temperature glass powder, an organic carrier and a functional additive. The lead-free low-temperature glass powder is a Bi2O3-B2O3-ZnO-CuO system and / or a V2O5-P2O5-TeO2-ZnO system. The organic carrier comprises alpha-terpineol, ethyl cellulose and ester alcohol twelve, and other additives can be added. The functional additive is selected from polyether acid, silane coupling agent, hydrogenated castor oil and the like. The lead-free sealing silver paste can complete sintering at low temperature, has high adhesive strength and high air tightness with tempered glass, has high strength retention rate for the tempered glass, low air release rate, good cold and hot cycle stability, and completely meets environmental protection requirements, and has the characteristics of low cost, high performance and green environmental protection.