2results about How to "Superhydrophobic" patented technology

This invention relates to a method for preparing and applying a superhydrophobic expanded graphite coating. The invention addresses the problems of complex preparation processes, high costs, or insufficient mechanical stability in existing technologies. The method uses expanded graphite as the main raw material and adds epoxy resin to prepare a superhydrophobic expanded graphite coating with photothermal properties. The coating is uniformly sprayed onto the surface of circular nickel foam using a spraying technique, resulting in a multifunctional superhydrophobic expanded graphite photothermal evaporator with sustainability, corrosion resistance, recyclability, self-cleaning capabilities, and water purification abilities. This invention belongs to the field of superhydrophobic coating preparation technology.

This invention provides an air sterilization and filtration material for aquaculture and its preparation method. Using fibers containing surface hydroxyl and carboxyl groups as the substrate, a polymer network is constructed by reacting fluorosilane and polyvinyl alcohol in an alkaline system at 80-120°C. After modification of the silicate network structure and the polyvinyl alcohol polymer network, the modified fiber A reacts with phosphate and perfluoroalkyl acrylate monoesters to generate a double-bonded polymerized acrylate network structure, which is bonded to the hydroxyl groups on the fiber substrate surface through esterification. Simultaneously, the hydroxyl groups of modified fiber A undergo a condensation reaction with the phosphorus-oxygen bonds of phosphate, forming a polymer network material. The phosphate and carboxyl groups on the surface of this polymer network material also coordinate with silver ions at coordination sites, resulting in the air sterilization and filtration material for aquaculture. The material exhibits antibacterial and bactericidal properties, excellent resistance to acid mist, and excellent antibacterial and antifungal properties. Furthermore, it possesses superhydrophobic properties, exhibiting very low air resistance when used in aquaculture air sterilization and filtration applications.