299results about How to "The preparation process is simple and reliable" patented technology

The invention discloses a method for preparing a hydrogenation catalyst composite, comprising the following steps of: (1) preparing a NixWyOz composite oxide precursor by using a coprecipitation method; (2) pulping, mixing and filtering the NixWyOz composite oxide precursor and MoO3; and (3) forming and activating the NixWyOz composite oxide precursor and the MoO3 to form a final catalyst, wherein the process of manufacturing the NixWyOz composite oxide precursor comprises the steps of: preparing acid solution A containing an active metal Ni component according to a component content proportion of the catalyst; preparing solution B containing an active metal W component according to the component content proportion of the catalyst; merging the solution A and the solution B, and adding the mixture of the solution A and the solution B into a reaction tank to gelatinize; and generating a deposited mixture to obtain the precursor containing the composite oxide NixWyOz. The catalyst prepared by the method has the advantages of uniform dispersion of metals, high use performance, and particularly higher activity for deep impurity removal process of hydrocarbon. The method is simple and convenient, and has low metal loss. The method is mainly used for preparing a bulk phase catalyst with higher metal content.

The invention provides a graphene-polyaniline composite material which comprises the following components in percentage by mass: 0.01-99.99% of graphene and 0.01-99.99% of polyaniline. The graphene and the polyaniline are doped to form a composite structure, and the composite structure has a micro or nano porous structure. The invention also provides a preparation method of the graphene-polyaniline composite material. In the graphene-polyaniline composite material, the graphene and the polyaniline are doped to form a porous composite structure, and such a micro or nano porous structure greatly increases the specific area of the composite material. Due to high conductivity and large specific area, the composite material has high specific capacity when being used as an electrode material. The preparation technique is simple and reliable, can effectively lower the technical cost, and has wide application prospects.

The invention discloses a method for manufacturing light diffusion sheets. The invention is characterized in that the method comprises the following steps of (1) manufacturing an imprint die core with at least one microlens structure; (2) designing computer-based imprint control programs, imprint parameters and pattern files; (3) imprinting the die core of the step (1) on a substrate to be imprinted in a first imprint work position according to the control programs and the pattern files of the step (2), by using hot nanoimprint or ultraviolet-imprint lithography, to obtain the relevant number of concave micro-lenses on the substrate; (4) chaining the position of the imprint die core relative to the imprinted substrate according to the imprint parameters until the next imprint work position; (5) repeating the steps (3) and (4) until all the imprint procedures are completed. The invention can directly imprint concave micro-lenses on the substrate by hot nanoimprint or ultraviolet-imprint lithography, allows the light dispersion layer to be integrated with the substrate as a whole, avoids the problems of unstable adhesion, poor diffusion effect due to the difference in thermal expansion coefficient and physical deformation, and efficiently improves the performance of light diffusion sheets.

The invention discloses an MWT (Metal Wrap-Through) solar cell assembly, comprising glass, EVAs (Ethylene-vinyl Acetate Copolymers) and a back plate material, and further comprising a series-welding cell sheet. The glass, the EVA, the series-welding cell sheet, the EVA, and the back plate material are sequentially arranged and are laminated and packed to form an MWT solar cell assembly; the series-welding cell sheet consists of a plurality of sequentially arranged MWT solar cell sheets, wherein an emitter electrode and a base electrode are arranged on the back surface of each MWT solar cell sheet, the emitter electrodes and the base electrodes of the adjacent MWT solar cell sheets are connected in series through a welding strip, the emitter electrodes and the base electrodes of the series-welding cell sheet are led out by the welding strips, and the patterns of the emitter electrodes and the base electrodes are matched with shapes of the welding strips. The invention further discloses a manufacturing method of the MWT solar cell assembly; and through the manufacturing method of the MWT solar cell assembly, the manufacturing process of assemblies of the MWT solar cell is simple and reliable, the cost is low, the compatibility is good, and the technical advantages of the MWT solar cell are fully exerted.

The invention discloses nitrogen-doped graphdiyne serving as an oxygen reduction electric catalyst and a composite material of the nitrogen-doped graphdiyne. The invention further relates to a preparation method of the nitrogen-doped graphdiyne. The nitrogen-doped graphdiyne material is obtained by heating graphdiyne power in mixed gas with a nitrogen source under certain temperature, keeping the temperature for certain time, and then naturally cooling the material. The catalyst material is high in activity; compared with a more commercial Pt/C catalyst, the catalyst material has the advantages of high output current, correction of reduction potential, high methanol interference resistance, high stability and the like.

The invention relates to a method for preparing monodisperse silver-coated microspheres, and belongs to the fields of silver-coated microspheres, electronic connecting materials and the like. The method comprises the following steps of: preparing monodisperse melamine formaldehyde resin (MF) microspheres by using a dispersion polymerization method; roughing, sensitizing, activating and chemically plating a nickel metal and a silver metal by taking the microspheres as mother spheres so as to obtain the monodisperse silver-coated MF microspheres. The MF mother spheres have the advantages of simple and reliable preparation process, high efficiency, controllable grain size, good monodispersibility and the like. Because the MF microspheres contain active groups such as amino acid, hydroxyl and the like, the coat is complete and high in binding force, the grain size of the silver-coated microspheres can be controlled in a range of 1.0-3.9mu m, the dispersion coefficient epsilon is 0.045-0.067, the monodispersibility is high, the decomposition temperature is about 300DEG C, and the thermal stability is high; moreover, the preparation method is simple and high-efficiency, has the advantages of industrial production, and has good application prospect in the fields of electronic connecting materials such as anisotropic conductive adhesives and the like.

The invention provides a glomerulus-targeted protein nanoparticle pharmaceutical composition and an application thereof. The protein nanoparticle pharmaceutical composition is mainly prepared from a protein ingredient, a pharmacological active substance and a stabilizer, and the grain size of the protein nanoparticle pharmaceutical composition ranges from 10nm to 170nm. With the application of the pharmaceutical composition, passive targeted drug delivery of glomerular mesangial cells is achieved, and the aggregation concentration of a drug in a glomerulus is obviously improved or the aggregation duration of the drug in the glomerulus is prolonged, so that the curative effect of the drug is remarkably improved, and meanwhile, the toxic and side effects of the drug on a non-targeted part are greatly reduced.

A manufacturing method for a degradable sponge product comprises the following steps: soaking, squeezing, yellowing, sticking, mixing, carrying out foam molding, washing, and preparing the degradable sponge product prepared from wood cellulose, wherein a), in the soaking process, two raw materials of sodium hydroxide and mixed pulp are mixed together in a dip vat; b) in the squeezing process, the soaked size is compressed to obtain an alkali cellulose block; c) in the yellowing process, carbon disulfide gas is introduced in the alkali cellulose block for yellowing to obtain xanthate; d) in the sticking process, xanthate, bamboo pulp, wood pulp and water are added in a kneading machine to be mixed to prepare an adhesive material; e) in the mixing process, the adhesive material, a sodium sulfate crystal and a toner ribbon are mixed to prepare a sponge mixture capable of being heated and foamed; f) in the foaming process, the sponge mixture is electrified, heated and coagulated to manufacture a sponge block.

The invention provides medicinal salts of saxagliptin, and particularly relates to mesylate, meleate, malate, succinate and citrate as well as preparation methods of the medicinal salts. The medicinal salts have the advantage of good stability, and are not easy to degrade. Preparations with controllable quality and low cost, which are suitable for industrial production, are prepared from the medicinal salts and pharmaceutically acceptable carriers through a conventional preparation technology. The medicinal salts can be used for treating and/or preventing diabetes mellitus.

The invention provides nano-structure array materials and a preparation method thereof, particularly provides a wide bandgap semiconductor 4H crystal-form silicon carbide material which is resistant to high temperature and abrasion and is provided with a nanowire array and a preparation method of the wide bandgap semiconductor 4H crystal-form silicon carbide material, and relates to the technical field of the nano-structure array materials. The nano-structure array materials comprise SiC nanowires in different crystal forms such as the 3C crystal form, the 4H crystal form and 6H crystal form. For example, on the basis of an n-type heavily-doped 4H-SiC substrate, a constant pulse current is applied to two poles by selecting appropriate pulse frequency and retention time so as to obtain a uniform mesoporous array, the current forward duty cycle and the current density are increased appropriately so that bottom pores can be separated from the substrate, and the nanowire array is obtained by means of a stripping means. The nano-structure array materials and the preparation method thereof have the advantages that the nano-structure array materials and the preparation method thereof are simple and reliable, the repetition rate is high, the density of the nanowire array is high, and preparation cost is saved. A solid technical material foundation is provided for application of silicon carbide products having the advantages of being high in carrier mobility and heat conductivity, resistant to abrasion and high voltage and the like in the fields of power electronics and aerospace.

A polyether sulfone water-based sizing agent contains the following components by weight percent: 0.5%-2.0% of main slurry, 0.2%-2.0% of an emulsifier, 1.3%-6.0% of an organic solvent, and 90.0%-98.0% of deionized water. The polyether sulfone water-based sizing agent provided by the invention has the advantages that the interface bonding strength between polyether sulfone resin and carbon fiber can be improved, the cost is low, and the flexibility of carbon fiber after sizing is good.

The invention discloses a kiwifruit tree canker preventing and controlling agent and a using method thereof. The preventing and controlling agent comprises the following components in part by weight: 0.1 to 3 parts of benziothiazolinone, 0.05 to 1 part of rare earth salicylate, 0.05 to 1 part of agricultural streptomycin, 0.05 to 1 part of citric acid, 0.001 to 0.03 part of vitamin C, 0.5 to 5 parts of polyvinylpyrrolidone and 40 to 80 parts of lanolin. Iron oxide red water does not flow out of a wound after the kiwifruit tree canker preventing and controlling agent is used for 1 to 3 days, and the wound can be cured in 5 to 7 days, so the preventing and controlling agent has the characteristics of short time, quick response, high cure rate, simple and convenient preparation process, no three wastes (waste water, waste gas and industrial residues) during production and use and environmental friendliness, and is safe and efficient.

The invention discloses a method for preparing a metal nanobelt array with a tip. The method comprises the following process steps of: preparing a single-layer ordered polystyrene nano sphere compact arrangement, preparing a single-layer ordered polystyrene nano sphere non-compact arrangement, performing vapor deposition on metal, preparing a metal nanobelt array and the like, wherein in the vapor deposition process, silicon wafers incline, and a certain included angle is formed between the normal direction and the vapor deposition direction of the silicon wafers, so that the projections of two adjacent polystyrene (PS) nano spheres in the vapor deposition direction onto the silicon wafers are intersected, and the tip is formed at the intersection of the projections to obtain the metal nanobelt array with the tip. The method is high in generality, wide in adaptability, high in compatibility, high in efficiency and low in cost, and can provide convenience for the study of the characteristics of arrays with metal nano structures.

The invention provides a waterborne polyethersulfone sizing agent for carbon fiber and a preparation method of the waterborne polyethersulfone sizing agent and belongs to the technical field of the sizing agents. The sizing agent comprises, by weight, 0.5-3 parts of polyethersulfone resin, 0.1-1 part of modified nano-carbon material, 0.2-2 parts of surfactant, 0.1-0.5 part of flatting agents, 0.1-0.7 part of lubricant, 0.1-1 part of bonding agents, 0.2-0.8 part of antistatic agent, and 91-98.7 parts of deionized water, wherein the modified nano-carbon material refers to modified graphene oxideor modified carbon nano-tubes. The invention further provides a preparation method of the waterborne polyethersulfone sizing agent for carbon fiber. As the modified nano-carbon has the structure similar to resin structure, amino functional groups can form hydrogen bonding with ether bond and sulfone bond of polyethersulfone resin, and further, good compatibility and excellent interface bonding strength between the sizing agent and the resin are guaranteed, and interfacial properties of carbon fiber reinforced polyethersulfone composites are improved remarkably.

The invention provides an electric spark small hole machining technology achieved through a dispersing agent working solution and a brass/nickel electrode and belongs to the field of non-traditional machining of an advanced manufacturing technology. The technology is characterized in that the water-based working solution and the brass/nickel composite electrode are used for conducting electric spark small hole machining, no improvement on an electric spark small hole machining lathe is needed, it is only required that the outer surface of the water-based dispersing agent working solution is used and the surface of a brass tubular electrode is electroplated with a layer of metal nickel with the melting point higher than that of an internal base material, and therefore the composite electrode is formed; the electroplating technology is mature, a core raw material of the working solution is low in cost, preparation is simple and practical, the technology is economical and easy to achieve, the speed, the depth-to-diameter ratio and the quality for electric spark small hole machining can be improved to a great extent through small investment, and the relative loss rate of a tool is reduced. The electric spark small hole machining speed and the depth-to-diameter ratio are improved, the electrode loss of the tool is reduced, the machining quality is improved, and the technology is wide in application prospect and high in popularization value.

The invention provides a macromolecule resistance humidity sensor and a relative production, wherein the macromolecule resistance humidity sensor comprise a porous ceramic base which upper and lower surfaces are respectively distributed with upper and lower surface electrodes, the surface electrodes are connected with lead wires, the holes on the porous ceramic base are immerged with humidity-sensitive medium, to form a solid humidity sensitive membrane. The inventive macromolecule resistance humidity sensor has simple and reliable production, low cost, non special device demand, batch production application, high output linearity, little humidity hysteresis return difference, high temperature resistance, high consistence, high stability for long time and better chemical gas resistance.

The invention provides a cobalt and nitrogen doped carbon nanorod catalyst as well as a preparation method and an application thereof. The preparation method comprises the following steps: 1) a nitrogen source, a carbon source and cobalt salt are dissolved in a N,N-dimethylformamide solvent in order to obtain a static spinning solution; 2) static spinning is carried out for the static spinning solution in order to obtain nanofiber cloth; 3) heat treatment is carried out for the nanofiber cloth in order to obtain a black fibrous material; 4) washing, pumping filtration, drying and grinding are carried out for the black fibrous material in order, and the cobalt and nitrogen doped carbon nanorod catalyst is obtained. The method which combines static spinning and heat treatment technology is employed for preparing the cobalt and nitrogen doped carbon nanorod catalyst, the catalyst has the advantages of low cost, uniform structure and excellent performance, and excellent oxygen reduction reaction (ORR) electrocatalytic activity is shown in acidic and alkaline mediums; the whole preparation technology is simple and reliable, and is suitable for scale expansion; in the future, the catalyst can replace platinum based noble metal catalyst, and can be applied to the fields of proton exchange membrane fuel cell, metal-air fuel cell, and the like.