2results about How to "Improve modification efficiency" patented technology

The application discloses a kind of fast green and good versatility polyphenol coating modification method, product and application thereof.Hydrophobic material is washed with ethanol multiple times to be pre-wetted;Pre-wetted hydrophobic material is immersed in polyphenol-containing substance, silane coupling agent with amino group and deionized water to be super-hydrophilic modified;Modified film is taken out and washed with deionized water completely.The prepared polyphenol coating modified super-hydrophilic film has layered nanosphere structure, and can be applied to purification of oily wastewater.The method is carried out in pure water system, does not contain any toxic additives and oxidant, and only needs 40 minutes to realize super-hydrophilic modification of various polymer hydrophobic films, greatly improves modification efficiency.Modified PP film prepared by the method has super-high pure water flux and higher oil-in-water emulsion separation efficiency, and has excellent mechanical stability, acid and alkali resistance and long-term stability in air.The method has the advantages of green environmental protection, good versatility, high modification efficiency and the like.

This invention discloses a method for preparing functional carbon materials with atomically dispersed Lewis acid-base sites, comprising: (1) polymer preparation to obtain a polymer sample; (2) polymer modification to obtain a modified polymer sample; (3) polymer carbonization: the modified polymer sample is heat-treated in a non-oxidizing atmosphere to carbonize the modified polymer sample; after carbonization, the system is naturally cooled; then, after washing and drying, the target functional carbon material is obtained. This invention utilizes atomically dispersed Lewis acidic metal sites and basic N sites to modify carbon materials in situ. The prepared functional carbon material has a large specific surface area, well-developed pore structure, abundant acid-base sites, and an atomically distributed structure, which can significantly improve the density of functional sites on the surface of the carbon material and its adsorption efficiency for boron, phosphorus, and metal impurities. Its application in the purification of chlorosilanes can greatly reduce the load of subsequent distillation and impurity removal, and improve the yield and quality of high-purity chlorosilanes.