3results about How to "Regulated content" patented technology

The application relates to the technical field of catalysts, and discloses a limited type iodine-based homogeneous immobilized catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and iodine ions, magnesium ions and quaternary ammonium ions loaded on the carrier, wherein the molar ratio of the magnesium ions, the quaternary ammonium ions, the iodine ions and the carrier is 0.01-1:4-15:1-30:1. The limited type iodine-based homogeneous immobilized catalyst disclosed by the application enhances the electrostatic interaction between iodine ions and quaternary ammonium ions through the molecular sieve limiting effect to construct a limited type structure. The catalyst has significantly enhanced CO2 adsorption and activation capacity, can activate an epoxide compound, and accelerates the ring opening of the epoxide compound. In a cycloaddition reaction catalyzed by the catalyst under the conditions of no solvent and no auxiliary agent, the conversion rate of propylene oxide can reach more than 73%, and the propylene carbonate selectivity can reach more than 85%.

This invention relates to a heat transfer protective film for metal corrosion protection, comprising a heat-resistant layer coated on one side of a base film, and an adsorption layer, a strong anode layer, and a weak anode layer sequentially coated on the other side of the base film. Sacrificial anode cathodic protection is an effective method for metal corrosion protection, while heat transfer technology transfers graphic coded information onto a substrate using a heat transfer printer or similar method. Because the coating can be prepared in advance, it can form heat transfer protective films with multiple functions. By preparing an anode coating containing an active metal, coating it as a heat transfer protective film, and then transferring it onto a metal substrate, the sacrificial anode material protects the cathode metal while imparting graphic coded information to the metal substrate. This represents a new metal corrosion protection mode that adapts to the development of the information age.

This invention relates to a method for preparing photocurable high thermal conductivity aluminum nitride ceramic irregular parts based on the synergistic regulation of residual carbon and yttrium fluoride, comprising the following steps: S1, preparing a photocurable resin system; S2, adding aluminum nitride powder, yttrium fluoride, and a dispersant to the photocurable resin system to obtain a composite ceramic slurry suitable for photocurable 3D printing; S3, curing layer by layer to obtain an aluminum nitride ceramic irregular part green body; S4, placing the ceramic green body obtained in step S3 in an atmosphere sintering furnace for two-step debinding; S5, taking a small sample of the debinded sample obtained in step S4 for residual carbon content calibration; S6, sintering to obtain the aluminum nitride ceramic irregular part. This invention precisely controls the residual carbon content after debinding by designing photocurable monomer combinations with specific functionalities, and simultaneously uses yttrium fluoride sintering aid to achieve a triple effect of densification, removal of lattice oxygen, and absence of liquid phase residue. The residual carbon regulation and the synergistic effect of the aid complement each other to jointly achieve the preparation of high thermal conductivity aluminum nitride ceramic irregular parts.