5results about How to "Designable" patented technology

This invention discloses a graphite mesh skeleton copper-based composite material and its preparation method, belonging to the field of thermal management materials. The composite material includes a vertical graphite mesh skeleton, copper pillar supports in the center of each mesh unit, and copper-based filler phases filling the gaps. The high thermal conductivity direction of the graphite surface is aligned with the material thickness direction, and its sidewalls have micropores. After sintering, the copper-based filler phases pass through the micropores, causing the copper in adjacent meshes to fuse together to form a three-dimensional through-network. The preparation method includes graphite cutting and drilling, skeleton assembly, introduction of copper pillars and copper powder filling, and sintering densification. This invention suppresses the collapse of vertical graphite during sintering through the central copper pillars and breaks the physical separation of the matrix through the physical riveting effect of the micropores, significantly improving interfacial bonding and macroscopic mechanical strength, while maintaining excellent out-of-plane continuous directional thermal conductivity.

The application discloses an antibacterial bio-based polyamide elastomer and a preparation method thereof. The preparation method comprises the following steps: preparing a polyamide prepolymer containing a tertiary amine structure through ring-opening polymerization reaction of caprolactam, N-diethyl-aminocaprolactam and sebacic acid, then reacting with polytetramethylene ether glycol to form a polyamide-polyether block copolymer elastomer, and further modifying the polyamide-polyether block copolymer elastomer through reaction with a halogenated hydrocarbon to realize quaternary ammonium modification, so that the quaternary ammonium salt antibacterial group is stably introduced into the polymer molecular structure in a covalent manner. The bio-based polyamide elastomer prepared by the application has excellent elastic properties and persistent and stable quaternary ammonium antibacterial properties, the antibacterial components are not easy to migrate and lose, the preparation process is simple and controllable, is suitable for the field of functional materials, and has a good application prospect.

The invention discloses a preparation method of a metal product with a screen decoration texture on the surface, which is characterized in that a texture pattern is prepared by adopting a freely flowing coating, a screen decoration texture forming agent and water, and the screen decoration texture forming agent and a protective coating on the water surface can interact to form a spider web type screen decoration pattern. According to the method, complex machining is not needed, operation is easy, batch repeated production can be achieved, meanwhile, the method is suitable for surface machining of base materials with complex appearances, and the concave-convex textures of the net ornaments are smooth and natural in line, graceful in curve, high in texture layering sense, natural in texture and high in texture.

The invention discloses a chloride ion-resistant MnO thin-wall hollow sphere catalyst and a preparation method thereof, the catalyst is a multilayer hollow sphere formed by sintering MnO spherical powder, and the outer diameter is 0.2-10 mm; the thickness of the wall is 10-1000 [mu] m; the particle size of the MnO spherical powder is 0.1 to 70 [mu] m. The MnO catalyst is prepared into the thin-wall hollow sphere, the contact area of the catalyst and the absorbent is ensured by utilizing the characteristics of porosity, high specific strength and low density of the hollow sphere, and the catalytic efficiency is improved; mnO is used as a catalyst, so that the catalyst has good chloride ion resistance and can keep normal catalytic activity after being washed with seawater.