6results about How to "Achieve surface modification" patented technology

The application relates to the technical field of drug delivery, in particular to a ZIF-8 / PDA composite material and a preparation method and application thereof. The ZIF-8 / PDA composite material provided by the application has good feasibility in terms of loading and delivering curcumin. The ZIF-8 material is modified by polydopamine, and the loading effect of the ZIF-8 material as a carrier on drugs is improved. The characterization results show that the drug loading performance of ZIF-8@PDA is obviously improved. The in-vitro release experiment results show that CuR@ZIF-8@PDA has more significant pH response drug release characteristics, shows good inhibition on Staphylococcus aureus and Escherichia coli, the hemolysis rate is 3.1%, is within a safe range, the inhibition on HepG2 cells is stronger than that of CuR@ZIF-8, and more obvious oxidative stress reaction and cell apoptosis can be induced.

The invention relates to the technical field of PET polyester, and discloses an environment-friendly high-thermal-conductivity polyester material and a preparation process thereof.The polyester material comprises, by weight, 100 parts of polyethylene glycol terephthalate, 10-40 parts of hexagonal boron nitride and 0.5-2.5 parts of sodium polyethyleneimine urea carboxylate; polyethyleneimine ureido sodium carboxylate contains a large amount of active amine activity and sodium carboxylate groups, surface modification of boron nitride is effectively achieved, dispersity of boron nitride can be improved, compatibility with PET is better, the polyester material can keep good mechanical property and tensile strength, and the heat conductivity coefficient and heat conduction and heat dissipation performance of the material are improved. Meanwhile, the surface water contact angle of the polyester material is reduced, and the antistatic performance of the polyester material is improved.

The application relates to the technical field of ceramics, and discloses a high-gloss high-whiteness ceramic glaze and a preparation method thereof.The high-gloss high-whiteness ceramic glaze comprises, in terms of weight fractions, 35-40 parts of calcite, 38-45 parts of wollastonite, 0.6-1.4 parts of potassium feldspar, 0.3-0.8 parts of calcined kaolin, 0.6-1.3 parts of clay, 1.2-2.8 parts of calcined zinc oxide, 4-16 parts of high-dispersibility zirconium silicate powder and the like; the phytic acid-based polyethylene glycol contains hydroxyl groups and a large number of sodium phosphate groups, can improve the interaction between polyethylene glycol molecular chains and the surface of zirconium silicate powder, effectively realizes surface modification and modification of the zirconium silicate powder, is favorable for overcoming the agglomeration of the zirconium silicate, and can be uniformly dispersed in a ceramic glaze matrix, and the gloss and whiteness of the glaze surface of the glaze are remarkably improved.

The invention relates to the technical field of textile raw materials, and particularly discloses a multifunctional polyester draw textured yarn. The multifunctional polyester draw textured yarn is prepared by modifying polyester draw textured yarn with a modification liquid; the modification liquid comprises the following components in parts by mass: 100 parts of an organic solvent; 1-2 parts of cordate houttuynia oil; 1 to 2 parts of lycopene oil; 1-2 parts of evening primrose oil; 1-2 parts of schisandra chinensis oil; and 3-5 parts of organic amine. The method has the advantage that the antibacterial performance and the antistatic performance of the polyester textured yarn are improved.

This invention relates to the field of photoelectrochemical water splitting materials technology, and particularly to a surface-confined sulfur-doped metal oxide photoanode and its preparation method. The method includes growing a metal oxide nanostructure on an FTO substrate using a hydrothermal method to obtain a metal oxide photoanode; repeatedly performing drop-coating and ignition treatments on the surface of the metal oxide photoanode to obtain an ignition-treated metal oxide photoanode; the drop-coating and ignition treatments include drop-coating sulfur-containing organic matter to form a liquid wet film, and igniting the liquid wet film in an air environment; cleaning and drying the ignition-treated metal oxide photoanode to obtain a surface-confined sulfur-doped metal oxide photoanode. This method utilizes the localized thermal field generated by liquid film combustion to drive sulfur atoms to diffuse to the surface and near-surface layer of the metal oxide, achieving precise surface-confined gradient doping.

This invention relates to the field of silicone rubber technology and discloses a method for preparing highly transparent extruded precipitated silicone rubber. The invention involves adding silicone rubber compound and modified titanium dioxide to a Banbury mixer for mixing, then adding a vulcanizing agent, mixing again, and finally extruding the compound in an extruder to form a high-transparency extruded precipitated silicone rubber. The organosilicon modifier contains a large number of carboxyl groups, effectively achieving the coating modification and surface modification of titanium dioxide, which helps reduce titanium dioxide agglomeration, improves the compatibility between titanium dioxide and the polysiloxane molecular chains of silicone rubber, and ensures that it is uniformly dispersed in the silicone rubber matrix, providing better reinforcement. The tensile properties and tear strength are significantly improved, resulting in silicone rubber with high transparency and good mechanical properties.