38results about How to "Suitable for batch preparation" patented technology

The present invention relates to a kind of Ag 0.333 V 2 O 5 The composite material of nanorods and platinum and silver nanoparticles, specifically, is a photocatalyst with plasmon resonance effect. The preparation process includes the following steps: (1) firstly adopt a hydrothermal process to prepare Ag x V 2 O 5 nanorods; (2) Ag x V 2 O 5 Nanorods are dipped in chloroplatinic acid solution, dried and reduced in a reducing atmosphere to obtain Ag 0.333 V 2 O 5 Pt / Ag / Ag composites of nanorods with platinum and silver nanoparticles 0.333 V 2 O 5 . The material has excellent photoelectric catalytic oxidation performance for methanol and the like. The preparation method involved in the present invention has the advantages of simple process, green environmental protection and easy enlargement.

The invention discloses a preparation method of a bi-system high-temperature superconducting material, comprising the following steps of: preparing Bi-2212 powder into a bi-system tape material by adopting a powder tubing method and a clustered drawing technology; dissolving a bonder by using methanol or ethanol as a solvent and then adding the Bi-2212 powder to mix evenly so as to obtain suspension liquid; causing the bi-system tape material to pass through a liquid trough which is loaded with the suspension liquid and then guiding the bi-system tape material to pass through a drying furnaceso as to obtain a bi-system high temperature superconducting tape material which is externally coated with a superconducting film; and carrying out semi-melting treatment on the bi-system high temperature superconducting tape material which is externally coated with the superconducting film and then obtaining the bi-system high-temperature superconducting tape material after cooling with a furnace. The preparation process of the invention is simple, reasonable in design, low in manufacturing cost and large in popularization. In the invention, a layer of Bi-2212 superconducting film is added on the surface of the bi-system tape material prepared by a PIT method so that the silver hypergeometric of the tape material is decreased, the effective superconducting area is increased and the engineering current density of the bi-system tape material is improved.

The invention relates to a conductive titanium oxide ceramic sputtering target material and a preparation method thereof. Specifically, the present invention discloses a method for preparing a titanium oxide target, comprising the following steps: 1) providing modified titanium oxide nanopowder; 2) compressing the modified titanium oxide nanopowder into a ceramic green body; 3) sintering the ceramic green body in a vacuum atmosphere or an inert atmosphere to obtain the titanium oxide target. The invention also discloses a titanium oxide target material prepared by the method and a titanium oxide thin film obtained by sputtering the target material. The method has simple process, low cost and is easy to obtain a titanium oxide target material with uniform and stable performance, and further can obtain a titanium oxide thin film with excellent performance.

The invention discloses a corner diameter expanding extrusion die and method for preparing a tubular product by adopting a bar and belongs to the technical field of metal plastic working. The corner diameter expanding extrusion die comprises an upper mold plate, an extrusion core rod, an upper base plate, a core rod fixing plate, an unloading plate, a concave mold, a concave mold supporting plate,a spring, a convex mold supporting plate, a lower base plate, a lower mold plate, an inner guide pillar and an extrusion convex mold. The mold adopts the floating convex mold, and the front end of the extrusion core rod is of a cone-shaped structure, so that a material flows favorably and the extrusion force is reduced; axial extrusion, secondary corner extrusion and diameter expanding extrusiondeformation of the tubular product can be achieved by means of an extrusion channel formed by the extrusion core rod and the concave mold. The mold can achieve extruding, unloading and ejecting operations of the tubular product sequentially in one stroke, so that the extrusion die is high in production efficiency and suitable for batch preparation of superfine crystal tubular products, and can achieve industrial applications of a severe plastic deformation technique.

The invention is a preparation method of carbon-ceramic composite material based on unidirectional tape technology. In the method, carbon fiber is used as a reinforcement, and a carbon fiber unidirectional tape is prepared by compounding with a slurry prepared from a high carbon residue resin, and the unidirectional tape is laminated. , through molding or autoclave molding to make a prefabricated body, and then prepare carbon fiber reinforced ceramic matrix composites through carbonization and infiltration. This method does not require the preparation of an interface layer on the carbon fiber surface, and the uniform distribution of fibers in the matrix can be achieved by using the unidirectional tape process, which can realize continuous production and avoid performance attenuation caused by twists and turns formed by traditional fiber weaving.

The invention discloses a preparation method for a novel electrical heating type air absorption element. The preparation method comprises the following steps that (1), an air absorption alloy material is prepared, specifically, a crushed air absorption alloy is sieved through a vibrating sieving machine, air absorption alloy powder with the specific grain size range between upper and lower screens is obtained, the air absorption alloy powder with the grain size range is immersed in anhydrous ethanol to be subjected to ultrasonic treatment, and the treated air absorption alloy powder is dried for standby application; (2), a metal alloy pipe is prepared, specifically, micropores formed in a dot matrix net type structure are drilled in the pipe wall of the metal alloy pipe, and the drilled metal alloy pipe is cleaned through ultrasonic waves and dried in the air for standby application; and (3), the air absorption element is prepared, specifically, the metal alloy pipe is filled with the treated air absorption alloy powder, and the air absorption element is prepared. According to the preparation method, the technology process is simple and easy to control, the defects of powder falling, inconvenient assembly, wire breaking and the like of an existing air absorption element are overcome, and the air absorption element prepared through the method has higher mechanical strength and machining precision.

The invention discloses a precious metal alkaline solution and a preparation method thereof. The problem that catalyzing boards provided with thin precious metal films cannot be prepared in a batch mode and have high comprehensive cost and low composite efficiency is solved. The precious metal alkaline solution is mainly prepared by evenly mixing materials and 1L of pure water, wherein the materials include 1.5-3.5mol of sodium hydroxide,1.5-3.5mol of potassium hydroxide, 0.5-1.5mol of ammonium hydroxide, 0.5-1.5mol of absolute ethyl alcohol, 4-6mol of rhodium chloride, 4-6mol of iridium chloride, 4-6mol of copper chloride and 4-6mol of sodium chloroplatinite. By utilizing the precious metal alkaline solution and the preparation method of the precious metal alkaline solution, the catalyzing boards with thin precious metal films can be manufactured in the batch mode, the comprehensive cost of the catalyzing boards is effectively reduced, the catalyzing efficiency of the catalyzing boards is improved, and the composite efficiency of the catalyzing boards reaches to 98%.

The invention relates to a preparation method of a core-shell-empty-shell structure material, in particular to a method for one-step synthesis of anatase-type crystallized titanium dioxide nano-core-shell or empty-shell structure material in an aqueous phase. In the present invention, the water-soluble titanium peroxide precursor is used for the first time to coat the nano-titanium oxide layer on the surface of polystyrene through the sol-gel method, and the shell-layer titanium oxide is directly crystallized into anatase nano-titanium dioxide at a relatively low temperature in the water phase without sintering. Not only that, through the control of the precursor, after the shell layer is formed and crystallized, the polystyrene core as the template can be dissolved spontaneously, so that the nano-titanium dioxide hollow shell structure can be directly obtained in the water phase. Compared with the traditional preparation method, the method of the present invention has simple flow, strong operability, relatively low cost, is suitable for batch preparation, has the possibility of industrial production, and is suitable for environmental purification, drug transportation, photonic crystals, etc. It has broad application prospects.

The invention discloses a cycloolefin copolymer microlens array with a metal diaphragm and a preparation method thereof. The preparation method disclosed in the present invention includes the steps: S101, using the first photolithography mask to form a first photoresist mask on the surface of the silicon wafer substrate by photolithography; S102, etching silicon wafer micropores on the silicon wafer substrate Array; S103. After paving the cycloolefin copolymer layer on the microwell array of the silicon wafer, heat and press to obtain the first cycloolefin copolymer array; S104. Using the reverse photolithography method to utilize the second photolithography mask Forming a second photoresist mask on the cycloolefin copolymer array to obtain a second cycloolefin copolymer array; S105, evaporating a layer of metal on the structural surface of the second cycloolefin copolymer array to obtain the second cycloolefin copolymer array Tricyclic olefin copolymer array; S106. Put the third cycloolefin copolymer array into acetone solution to obtain a cycloolefin copolymer microlens array with a metal diaphragm.