31results about How to "Reduce operation process" patented technology

The invention discloses a preparation method for a high-performance three-dimensional carbon nanotube composite negative electrode material. The preparation method comprises: by taking a carboxylated carbon nanotube as a three-dimensional network framework and taking a high-capacity material subjected to layer by layer self-assembly and modification as an active substance, uniformly mixing the carbon nanotube with the active substance under the action of electrostatic attraction; and then performing in-situ coating by taking a mixed element-containing N or S-doped carbon source as a three-dimensional coating layer, and performing high-temperature treatment to obtain the high-performance three-dimensional carbon nanotube composite negative electrode material. The invention furthermore discloses the high-performance three-dimensional carbon nanotube composite negative electrode material and an application thereof. According to the preparation method, the cycle performance of the active substance is remarkably improved, and the capacity of the composite material can be controllably adjusted by controlling a ratio of the carbon nanotube to the active substance. In addition, a solvent used in the method is water, so that the method is environmentally-friendly, good in repeatability and low in cost, and has relatively high potential of large-scale application and good industrialized prospects.

The invention relates to a metal catalyst which comprises: 1) a nano TiO2 modified porous material as a composite carrier, and 2) a nano particle of at least one out of Pd and other transition metals as an active component, wherein the active component and TiO2 in the composite carrier have strong metal-carrier interaction to form a Pd@TiO2 structure or a Pd-M@TiO2 structure, thereby forming the Pd-M@TiO2/porous carrier catalyst, and M is at least one out of the transition metals except Pd. The invention further relates to a preparation method of the catalyst, and an application of the catalyst in preparing cyclohexanone through selective phenol hydrogenation.

The invention relates to the field of lithium ion batteries, in particular to a lithium ion battery cathode and a preparation method thereof. According to the lithium ion battery cathode, a foam copper sheet serves as a current collector, and terephthalate cobalt serves as active substances. The lithium ion battery cathode is prepared from the foam copper sheet, terephthalic acid, cobalt-nitrate hexahydrate, N,N-dimethyl-formamide, anhydrous ethanol and deionized water. A hydrothermal reaction method is adopted for the preparation method, the active substances can directly grow on the surface of the foam cupper sheet and in pores, a traditional complicated coating technology is not needed, and the cathode applicable to lithium ion batteries can be further obtained. When the method is used for preparing the batteries, cost is low, operation is easy, and the prepared batteries are light and high in specific capacity.

The invention belongs to the technical field of solar cells, and particularly relates to ionic liquid modified carbine, a preparation method for the same and application thereof. The preparation method for the ionic liquid modified carbine employs autocatalysis and auto polymerization without any catalyst. The melting point of the ionic liquid modified carbine exceeds 80 DEG C so as to accord with the highest use temperature of a dye-sensitized solar cell. Ionic liquid is high in electric conductivity at the room temperature, and the electric conductivity at the room temperature reaches 40mS/cm. The ionic liquid modified carbine is applied to the all-solid dye-sensitized solar cell with energy conversion efficiency of 6.25%. The preparation method is simple, raw materials are inexpensive and available, operation process is simplified and cost of the cell is reduced by applying the carbine to the all-solid dye-sensitized solar cell, and the cell is high in stability and suitable for mass production.

The invention discloses a stamping die for casting of a metal product, and belongs to the technical field of metal products. The stamping die comprises a lower die plate. Supporting rods are arrangedon the left side and the right side of the top of the lower die plate correspondingly. A fixing plate is arranged at the tops of the supporting rods. The bottom of the fixing plate is connected with ahydraulic telescopic rod. The bottom of the hydraulic telescopic rod is connected with a movable die plate. A fixed die plate is arranged at the top of the lower die plate. A mold cavity is formed inthe top of the fixed die plate. A mold core matched with the mold cavity is arranged at the bottom of the movable die plate. Guiding columns are arranged on the left side and the right side of the bottom of the movable die plate correspondingly. Guiding sleeves matched with the guiding columns are arranged on the left side and the right side of the top of the fixed die plate correspondingly. Three sets of jacking rods are movably arranged in an inner cavity of the fixed die plate. The bottoms of the jacking rods are connected with a supporting plate. The bottom of the supporting plate is connected with a telescopic spring. Thus, a metal material forming technology is simpler, an operation technology adopted after the metal product is formed is reduced, the forming efficiency of the metalproduct is improved, the structure is simple, and using is convenient.

The invention discloses a synthetic method for 3,7,10-trioxo-2,4,6,8,9,11-hexa aza(3,3,3)propellane. The method comprises the following steps that at the temperature of 15 DEG C-30 DEG C, diamino glycoluril and N,N'-carbonyldiimidazole are added into dimethyl sulfoxide in a stirred mode, after feeding is finished, the reaction is carried out for 50-80 h, then reaction liquid is poured into acetone and filtered, filter cake is washed with methyl alcohol and dried to obtain 3,7,10-tri oxo-2,4,6,8,9,11-hexa aza(3,3,3)propellane, the molar ratio of diamino glycoluril to N,N'-carbonyldiimidazole is 1:1.05-1.3, and the mass ratio of diamino glycoluril to N,N'-carbonyldiimidazole is 1:18-25.

The invention relates to the technical field of preparation and application of graphene, in particular to a graphene palladium carbon catalyst. A preparation method of the graphene palladium carbon catalyst comprises the following steps: S1, preparing modified activated carbon slurry sensitized by the graphene; S2, preparing MoO3 nano particles; S3, preparing a MoO3/activated carbon composite carrier material; S4, preparing a PdNO3 solution; S5, preparing a palladium carbon catalyst. The graphene palladium carbon catalyst, prepared by the preparation method disclosed by the invention, has theadvantages that palladium microcrystalline particles as an active component are small to nanometer scale, the content is high and more surface atoms are exposed; in addition, the specific surface areais large and the active component has good dispersity on the surface of a carrier.

The invention relates to the technical field of terminal crimping jigs, in particular to a variable-frequency reactor claw terminal crimping device, which comprises a mounting frame, a reactor fixingseat and a terminal claw positioning base, and is characterized in that the reactor fixing seat is fixed on a bottom plate of the mounting frame, and the terminal claw positioning base is mounted on the reactor fixing seat; pushing and flattening structures used for pushing and flattening the clamping jaws and wire fixing structures used for pulling wires are installed on the portions, located atthe two ends of the terminal clamping jaw positioning base, of the electric reactor fixing base respectively, and flattening structures used for flattening the clamping jaws after the pushing and flattening structures push and flatten the clamping jaws are installed on a top plate of the mounting frame. According to the invention, the working efficiency is greatly improved, and the labor intensityof operators is reduced; the manufactured variable-frequency electric reactor clamping jaw covered wire product is high in appearance consistency, the connecting wire is almost prevented from fallingoff, and the product quality is improved; and the high-voltage and impedance qualification rate is high, and the electrical performance is very stable.

The invention provides a method for preparing chloropropylene oxide from biomass glycerol. The method comprises the following steps: first mixing biomass glycerol with organic acid, carrying out heating to 90-140 DEG C, maintaining the temperature, introducing hydrogen chloride gas into the obtained system and starting a bubbling reaction, wherein tail gas is absorbed with alkali liquor; cooling amaterial obtained in the previous step to room temperature, then transferring the material to another reactor, heating the material to 30-90 DEG C, and adding a KOH solution with a concentration of 6-10 mol/L for a reaction; and at the end of the reaction, removing solids through filtration so as to obtain a filtrate which is a chloropropylene oxide solution. The method of the invention has the advantages of simple process, easy availability of raw materials, low cost and good industrialization prospects.

The invention discloses a manufacturing technology of a high thermal shock resistance graphite electrode and a production device thereof. The technology comprises the following steps of (1) material preparation; (2) burning; (3) grinding; (4) stirring; (5) rolling; (6) calcination; (7) forming; (8) dipping and (9) graphitization. The production device comprises a dipping box body, a fixing plate and a covering plate; the dipping box body is of a box structure with the upper end face being open, bases are evenly distributed at the bottom of a filter tank body, the fixing plate is arranged in the middle of the filter tank body, a clamping groove is formed to extend outwards from one end face of the upper end face of the dipping box body, and inward sinking tanks are formed in the inner sidesof the other three upper end faces of the dipping box body. The preparation technology is characterized in that the formed graphite electrode is placed into the dipping box to be dipped, so that thedipping liquid can completely wet a whole green body of the graphite electrode, then graphitezation is conducted, the cohesion of the graphite electrode is improved, breakage prone to occurring in thegraphitization process of the graphite electrode is reduced, and the integral thermal shock resistance of the graphite electrode is enhanced.

The present invention relates to a printed circuit board. The printed circuit board comprises a PCB, a power electronic component installed at one surface of the PCB and capable of heating at work, a metal cooling fin strip is arranged at the other surface of the PCB, the PCB is provided with the insertion hole of the metal cooling fin strip, and the metal cooling fin strip is bended and then passes through the PCB through the insertion hole to be stretched into the heating area of the heating power electronic component. The heat emitted by the power electronic component can be directly conducted on the metal cooling fin strip at the other surface of the PCB through the metal cooling fin strip to perform heat radiation on the metal cooling fin strip with no need for a structure of laying one layer of insulation heat conduction materials and copper coating on an aluminum plate for heat radiation so as to solve the technical problems that the current printed circuit board is complex in technology, the product disability rate is high and the maintenance is not convenient.

The invention relates to a preparation method and application of a collagen peptide magnesium chelate. The preparation method comprises the following steps: step 1, preparing bovine bone collagen peptide; and step 2, preparing the bovine bone collagen peptide magnesium chelate. According to the method, cattle bones which are wide in source are used as raw materials, the cattle bone collagen peptide is prepared through double-enzyme composite enzymolysis, and the collagen peptide magnesium chelate is prepared through chelation of the cattle bone collagen peptide and magnesium ions. The collagen peptide magnesium chelate has significantly improved antioxidant activity and osteoblast promoting activity, can play a positive effect on prevention and treatment of osteoporosis, and provides a new thought for development and utilization of novel peptide magnesium chelate products.