7results about How to "Improve structural properties" patented technology

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The utility model discloses a wear-resistant antibacterial ceramic tile, which relates to the field of ceramic tiles, and comprises a bottom plate, the top of the bottom plate is connected with a wear-resistant mechanism, the wear-resistant mechanism further comprises antibacterial glaze, the antibacterial glaze is also connected to the upper surface of an activated carbon layer, and an aluminum oxide material and the antibacterial glaze are mixed to form the wear-resistant antibacterial ceramic tile. The upper surfaces of the antibacterial glaze and the aluminum oxide material are connected with a microporous DLC (Diamond Like Carbon) protective film. According to the wear-resistant antibacterial ceramic tile, silver ions can be diffused to the surface of the ceramic tile through the microporous buffer fluid and micropores of the microporous DLC protective film, the antibacterial effect of the ceramic tile can be achieved through the silver ions of the antibacterial glaze, the humidity of the ceramic tile can be balanced through the silicon dioxide aerogel, the activity of the silver ions is guaranteed, and the antibacterial effect is improved in a disguised mode; in addition, impact force borne by the silicon dioxide aerogel and the honeycomb blocks can be transmitted to the microporous buffer fluid, the hardness of the microporous buffer fluid can be increased after the microporous buffer fluid is subjected to high-speed impact through the characteristics of an object, and protection on the ceramic tile is greatly improved.

The invention relates to the technical field of conjugated microporous polymer materials, and discloses a covalent triazine unit-based conjugated microporous polymer membrane with negative charges and a preparation method thereof. The method comprises the following steps: firstly, preparing a negatively charged cyanophenyl monomer through nucleophilic substitution reaction of a cyanophenyl-containing compound and 1, 4-butane sultone, then taking the monomer and biphenyl nitrile as comonomers, and carrying out step-by-step polymerization, heating film formation, shock cooling shaping and dual-solvent soaking post-treatment under the catalysis of trifluoromethanesulfonic acid to obtain the cyanophenyl-containing polymer film. And finally obtaining the covalent triazine unit-based conjugated microporous polymer membrane with negative charges. The preparation process is high in controllability, and the obtained film has high stability of a covalent triazine structure and the porous characteristic and negative charge function of conjugated micropores, and has wide application prospects in the fields of gas separation and the like through verification.

This invention discloses a method for preparing N-doped β"-AlON solid electrolyte powder, which includes the following steps: (1) Slurry preparation: weigh anhydrous ethanol and dispersant, add the dispersant to anhydrous ethanol and stir evenly to obtain a mixed solution, then weigh aluminum source powder, lithium source powder, sodium source powder and nitrogen source powder to obtain a mixed powder, add the mixed powder to the mixed solution and stir thoroughly until the mixture is evenly mixed to obtain a mixed slurry; (2) Grinding to prepare precursor slurry: grind the mixed slurry thoroughly to obtain a precursor slurry; (3) Spray drying: spray dry the wet-ground precursor slurry to obtain spray-dried powder; (4) Calcination: calcine the spray-dried powder in a nitrogen atmosphere, and keep warm after calcination to obtain N-doped β"-AlON powder.

The invention discloses preparation and uranium separation application of a magnetic element doped cerium dioxide photocatalyst with a spin polarization effect, and belongs to the technical field of rare earth oxides, and the preparation method comprises the following steps: stirring metal nitrate or metal chlorine salt, cerium salt and a mineralizing agent in an aqueous solution until the materials are uniformly mixed, transferring the mixture into a reaction kettle for a hydrothermal reaction, and drying to obtain the magnetic element doped cerium dioxide photocatalyst with the spin polarization effect. Centrifuging, washing and drying, and collecting precursor solid powder; uniformly grinding the precursor solid powder, calcining in an atmosphere furnace, and cooling to room temperature to obtain the magnetic element doped cerium dioxide photocatalyst with the spin polarization effect. The magnetic element doped cerium dioxide photocatalyst with the spin polarization effect prepared by the invention has relatively high uranium separation and removal efficiency and relatively good catalytic stability for separating and removing uranyl ions in complex uranium mine wastewater.

A kind of circuit board manufacturing method of machine single-axis joint module with three-dimensional circuit, manufacture the first core plate with resin plug through hole and circuit pattern in uncovering area, and second core plate, stack and press to form press plate;Second through hole is drilled to the non-uncovering area of press plate and is electroplated, forms second through hole, surface circuit pattern is made, forms pattern plate;Second solder resist pattern is made, uncovering processing is carried out, the resin of resin plug through hole is drilled, forms first molding through hole, surface treatment is formed, second pattern plate;Rigid-flexible combination layer is made and is welded with second pattern plate, forms circuit board;Through uncovering processing, the three-dimensional circuit of rigid plate is formed, the solid hole of three-dimensional circuit is formed, the three-dimensional circuit structure of high reliability, high strength, high hardness;And rigid-flexible combination layer one end and second pattern plate are mutually welded, the other end is contacted in mode, realize effective straight state electric connection, bending state is separated from the dynamic deformation of state.