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64results about How to "Rapid industrialization" patented technology

Three-dimensional mesoporous carbon-loaded molybdenum carbide and preparation method and application thereof

The invention belongs to the field of preparation of nanomaterials and discloses three-dimensional mesoporous carbon-loaded molybdenum carbide and a preparation method and application thereof. The preparation method comprises the following steps of dissolving a soluble molybdenum salt in water, adding an organic carbon source and a template agent, adjusting the pH value of the solution to be 0-7.0, stirring and evaporating the solution to obtain gel, further dehydrating the gel to obtain xerogel, and calcining the xerogel at the high temperature in the atmosphere of inert gas or reducing gas;carbonizing the organic carbon source to obtain carbon, reducing and carbonizing molybdenum through reducing substances generated in the carbonization process of the organic carbon source to obtain nano molybdenum carbide, soaking nano molybdenum carbide in dilute acid to remove impurities, and then obtaining a target product. Compared with a bulk molybdenum carbide material, the three-dimensionalmesoporous carbon-loaded molybdenum carbide has the advantages that a conductive three-dimensional carbon network structure is obtained, the specific surface area is greater, more reactive sites aregenerated, a carbon-loaded structure prevents molybdenum carbide from agglomerating during high-temperature calcination, and therefore three-dimensional mesoporous carbon-loaded molybdenum carbide hasexcellent electrocatalytic performance.
Owner:SOUTH CHINA AGRI UNIV

Device and method for continuously preparing titanium or titanium alloy powder for 3D printing through gas atomization

The invention relates to a device and a method for continuously preparing a titanium or titanium alloy powder for 3D printing through gas atomization. The device comprises an atomization spray disc fixing top plate, an atomization spray disc, an electromagnetic shielding ring and a high-frequency induction coil from top to bottom, wherein the atomization spray disc and the fixing top plate are fixed through a fixing bolt; continuous conveying feeding holes for a titanium or titanium alloy wire material are formed in the central positions of the atomization spray disc fixing top plate and the atomization spray disc; the atomization spray disc and the electromagnetic shielding ring are coaxially installed about the axes of the conveying feeding holes; the atomization spray disc comprises a main atomization gas flow nozzle and auxiliary protection gas flow nozzles; and atomization gas flow sprayed out via the main atomization gas flow nozzle is collected on the wire material to form an atomization centre, and the atomization centre is superposed with a melting centre formed due to the heating of the high-frequency induction coil for the end part of the wire material. Therefore, melting flow is immediately limited and atomized by the main atomization gas flow after being generated, so that a superheating degree is furthest ensured, heat loss is reduced, and a high fine powder yieldof titanium or titanium alloy atomization is realized.
Owner:BEIJING COMPO ADVANCED TECH

Method for producing hydrogenated copolymer through hydrogenation of conjugated diene

ActiveCN110627928AEfficient realization of selective hydrogenation reactionReduce dosageHydrogenation reactionHydrogen pressure
The invention provides a method for producing a hydrogenated copolymer through hydrogenation of conjugated diene. The method for producing the hydrogenated copolymer through hydrogenation of the conjugated diene comprises the following steps: (1) mixing part of conjugated diene latex and a Hoveyda-Grubbs II catalyst to obtain a mixture A; (2) mixing the rest of conjugated diene latex, the mixtureA and assistants to obtain a mixture B, wherein the assistants are potassium oleate and/or sodium oleate; (3) introducing hydrogen into the mixture B for stirring and degassing treatment, and then conducting stirring treatment continuously to obtain a mixture C; and (4) heating the mixture C, and improving hydrogen pressure for a hydrogenation reaction to obtain the hydrogenated copolymer. According to the method for producing the hydrogenated copolymer through hydrogenation of the conjugated diene, through a mixing mode where the conjugated diene latex and the Hoveyda-Grubbs II catalyst are added in batches, introduction of the specific assistants, and a treatment method where the hydrogen is adopted for degassing treatment in advance, and stirring is conducted after degassing treatment is conducted, the selective hydrogenation reaction of the conjugated diene can be efficiently achieved without solvents to obtain a product with a high hydrogenation degree.
Owner:SHANDONG JINGBO PETROCHEM +2

Method for preparing hydrogenated copolymer from conjugated diene hydrogenated latex

ActiveCN111303317AAchieving selective hydrogenation reactionsReduce dosagePolymer sciencePtru catalyst
The invention provides a method for preparing a hydrogenated copolymer from a conjugated diene hydrogenated latex. The method comprises the following steps: mixing a part of a conjugated diene latex with a Hoveyda-Grubbs II catalyst so as to obtain a mixture A; mixing the residual conjugated diene latex, the mixture A and a composite auxiliary agent so as to obtain a mixture B, wherein the composite auxiliary agent is a combination of two or more selected from the group consisting of sodium oleate, potassium oleate, sodium tetradecenylsulfonate, potassium tetradecenylsulfonate, linear alkyl sulfate and alkyl betaine; introducing nitrogen into the mixture B, carrying out stirring and degassing treatment, and continuing stirring treatment so as to obtain a mixture C; and heating the mixtureC, introducing hydrogen, and carrying out a hydrogenation reaction so as to obtain the hydrogenated copolymer. According to the invention, through a batch-adding mixing mode, introduction of a specific composite auxiliary agent and stirring after nitrogen degassing treatment, selective hydrogenation of conjugated diene is realized; the usage amount of a catalyst is reduced; a high-hydrogenation-degree product is obtained; the reaction rate is increased; and the catalytic efficiency is improved.
Owner:山东京博中聚新材料有限公司 +2

Intelligent electronic distribution frame based on RFID and management system

The invention provides an intelligent electronic distribution frame based on RFID. Distribution ports arranged on the two intelligent electronic distribution frames are connected through a jumper wire. RFID radio frequency identifications arranged on the two intelligent electronic distribution frames are connected through an idle line in the jumper wire. The RFID radio frequency identifications ontwo ends of the jumper wire form an RFID radio frequency identification pair. The invention also provides a management system of the intelligent electronic distribution frame based on the RFID. The system comprises the intelligent electronic distribution frame of the RFID, an RFID intelligent reader and writer and a background service manager, wherein the RFID intelligent reader and writer carries out reading and writing with the intelligent electronic distribution frame through the RFID; and the background service manager is connected to the RFID intelligent reader and writer through a wirednetwork or a wireless network. By using the intelligent electronic distribution frame based on the RFID and the management system, cost is low, the structure is concise, gradation is distinct, an error rate and a failure rate of an integration wiring system are greatly reduced, simultaneously fault processing time during a wiring link is greatly shortened, and communication safety is further increased.
Owner:广东华纬伦智能科技有限公司

SiC high-temperature pressure sensor and packaging method thereof

The invention discloses a SiC high-temperature pressure sensor and a packaging method thereof. The sensor comprises a SiC MEMS chip, an AlN carrier, an elastic metal film, a supporting tube shell, a heat conduction base and a plurality of conductive binding posts; the heat conduction base is installed in the supporting tube shell; the AlN carrier is fixedly installed on the heat conduction base; the SiC MEMS chip is fixedly arranged on the AlN carrier; the elastic metal film is arranged on the supporting tube shell above the SiC MEMS chip; a thinned self-sealing cavity is etched in the face, attached to the AlN carrier, of the SiC MEMS chip; the conductive binding posts penetrate through the heat conduction base from the lower end of the supporting tube shell and then are connected with anelectrode of the SiC MEMS chip; and an insulating layer is arranged between the conductive binding posts and the heat conduction base. The assembly structure is put into heat conduction silicone oil,and the elastic metal film is pressed into the supporting tube shell in a matched mode through an annular plug cap, so the SiC high-temperature pressure sensor packaging is completed. The chip packaging structure is low in packaging cost and good in reliability, completely isolates the chip from a medium, and can continuously work at the high temperature of 500 DEG C or above.
Owner:WUHAN UNIV

Nickel cobalt iron hydroxide coated nickel cobaltate flexible electrode material and preparation and application thereof

The invention belongs to the field of zinc-air battery air electrode materials, and discloses a nickel cobalt iron hydroxide coated nickel cobaltate flexible electrode material and preparation and application thereof. The preparation method comprises the following steps: performing in-situ solvothermal growth and air calcination on a conductive substrate to obtain a nickel cobaltate nano array, and performing solvothermal deposition on nickel cobalt iron hydroxide on the surface of the nickel cobaltate nano array by using soluble salts of three transition metals including nickel, cobalt and iron to obtain the nickel cobaltate flexible electrode material coated with the nickel cobalt iron hydroxide. According to the nickel cobalt iron hydroxide coated nickel cobaltate flexible electrode material disclosed by the invention, ion transmission and electrolyte diffusion are promoted by utilizing a three-dimensional porous network structure; the nickel cobaltate nanowire and the nickel-cobalt-iron hydroxide shell layer are combined to increase the number of active specific surfaces and active sites, so that the composite electrode material has excellent oxygen evolution reaction and oxygen reduction reaction performance, and high specific discharge capacity, high energy density and outstanding cycling stability are realized when the composite electrode material is applied to a rechargeable zinc-air battery.
Owner:SOUTH CHINA AGRI UNIV

Application of nitrogen-doped carbon-coated Co and/or Co3ZnC composite material in preparation of lithium-sulfur battery diaphragm

The invention belongs to the field of nano materials and lithium-sulfur batteries, and discloses an application of a nitrogen-doped carbon-coated Co and/or Co3ZnC composite material in preparation of a lithium-sulfur battery diaphragm. The preparation method comprises the following steps: dissolving Pluronic F-127 in water, adding a carbon source dicyandiamide, adding a positive bivalent cobalt salt and a positive bivalent zinc salt, performing further stirring, evaporating water to dryness to obtain a solid compound, and carrying out high-temperature carbonization under the protection of N2 gas. In the process, dicyandiamide is carbonized to obtain N-doped carbon, reducing substances such as carbon monoxide, carbon dioxide, nitric oxide and carbon generated in the carbonization process of dicyandiamide can reduce and carbonize cobalt and zinc to obtain Co or Co3ZnC, and a target product is obtained after the reaction is completed. The N-doped carbon-coated Co and/or Co3ZnC composite material is used as a diaphragm modification material and is coated on a commercial diaphragm by a scraper method, and the electrochemical performance of the lithium-sulfur battery can be effectively improved when the N-doped carbon-coated Co and/or Co3ZnC composite material is applied to the lithium-sulfur battery.
Owner:SOUTH CHINA AGRI UNIV
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