37results about How to "Evenly embedded" patented technology

The invention relates to a preparation method of a porous metal oxide, which belongs to the intersection field of metal powder technology and metal material surface treatment. The preparation method is as follows: degumming the short carbon fibers first, then passing the degummed short carbon fibers and metal powder through a proper ball milling process to obtain metal powder embedded with ultrafine carbon particles, and then sintering in a protective atmosphere or vacuum after pressing. Or direct loose-pack sintering, and finally perform short-term annealing in oxygen-containing air. While removing carbon particles in the metal powder, the surface of the metal particles is partially oxidized to obtain a porous metal with a partially oxidized surface. The porous metal oxide prepared by the invention exhibits good properties of oil storage, hydrogen storage, paraffin wax storage, lithium storage, and catalytic performance, and the preparation process is simple and the cost is low.

The invention relates to a halving device for cobblestones. The device comprises a first halving mechanism group; the first halving mechanism group comprises a first rigid mesh plate, a cobblestone pressing mechanism and a cobblestones folding mechanism; the first rigid mesh plate is arranged horizontally; the cobblestone pressing mechanism comprises an upper pressing plate arranged above the first rigid mesh plate and a first hydraulic device for driving the upper pressing plate to move vertically; the cobblestones folding mechanism comprises a cobblestones folding plate arranged below the first rigid mesh plate and a second hydraulic device for driving the cobblestones folding plate to move horizontally; and a corrosion ring is arranged at the upper part of each mesh of the first rigid mesh plate along the circumference and comprises a circular chitosan gelatin sponge, a capillary for communicating the chitosan gelatin sponge with a strong alkaline solution storage tank as well as an electrostriction ring penetrates through the middle of the chitosan gelatin sponge along the circumference of the chitosan gelatin sponge. With the device, the cobblestones can be halved effectively, the machining cost is low, the machining process is table, little dust pollution exists, and the automation degree is high.

The invention relates to a metal-metal carbide-coated carbon particle composite powder and a preparation method thereof, belonging to the technical field of metal powder. The metal-metal carbide coated carbon particles include a metal layer, a metal carbide layer, and carbon particles; the metal carbide layer is coated on the surface of the carbon particles; the metal layer is coated on the surface of the metal carbide layer; The composite powder uses ultra-fine carbon particles and matrix metal powder as raw materials, and through mechanical force, the ultra-fine carbon particles penetrate and / or embed in the matrix metal powder; and then obtain a metal carbide layer by in-situ carbonization. The preparation method is as follows: : Firstly, through mechanical ball milling of degummed short carbon fibers and metal powder, a large number of ultra-fine carbon particles are evenly embedded in metal powder, and then separated and annealed at high temperature to make the carbon particles react with the surrounding metal in a solid state, and obtain a uniform coating on the surface of the carbon particles. Metal-carbon particle composite powders coated with metal carbides.

The invention discloses a preparation method and application of a non-metal-doped stainless steel mesh composite material. Firstly, a mixed solution of lithium chloride and phosphoric acid is used to carry out surface activation treatment on the cleaned stainless steel mesh; and then the activated stainless steel mesh is Together with the inorganic non-metallic source, it is transferred to a tube furnace for calcination and pyrolysis to obtain the target product. The composite material of the invention can be used as a catalyst to construct an organic pollutant catalytic reaction device to degrade the organic pollutant, the catalytic degradation rate reaches 100%, and the removal rate of the total organic carbon is as high as 99%.

The invention discloses a method for synthesizing Al-Cu alloy in situ by powder metallurgy. The method comprises the following steps: firstly, obtaining a microscopic structure that copper nanoparticles are uniformly deposited on aluminum powder by an impregnation method, performing ball-milling for a relatively short time, uniformly dispersing copper and embedding dispersed copper into the aluminum powder; secondly, densifying the powder by a cold-pressing sintering or vacuum hot-pressing method to obtain a block material; finally, performing hot extrusion forming to obtain the Al-Cu alloy material. The method has the advantages that the Al-Cu alloy material is prepared by the method, and the mechanical property of the alloy material is superior to that of other powder metallurgy aluminum alloy material. Meanwhile, the method also can be popularized and applied to other metal powder so as to prepare different matrix alloy materials. Therefore, the method has a wide industrial application prospect.

The invention relates to a method for preparing a manganese-doped zinc sulfide quantum dot embedded fluorescent composite film, which comprises the following steps: sequentially combining manganese-doped zinc sulfide fluorescent quantum dots, a film-forming monomer, a cross-linking agent and an initiator Dissolved in a solvent, ultrasonically dispersed and stirred to make a casting solution; at room temperature, the casting solution is evenly spread on the matrix material, covered with polymethyl methacrylate, and heated in a water bath under pressure to initiate polymerization; polymerization Afterwards, the membrane is placed in a hydrofluoric acid solution to etch and remove the matrix material to obtain a fluorescent quantum dot embedded composite membrane. The method of the present invention is easy to synthesize, has strong fluorescent performance, low biological toxicity and can be reused. The embedded composite film has the advantages of good transparency, stable fluorescence, high mechanical strength and good self-cleaning ability, and can be used in optical sensing, biochemical It has great application potential in food analysis, water pollution, food analysis and environmental protection.