▎ 摘　　要

NOVELTY - Interpenetrating network superhydrophobic dispersion comprises an interpenetrating network binder and nanoparticles. The interpenetrating network adhesive is polyurethane/polyacrylate cross-linked network polymer. The mass ratio of polyacrylate to the two components of polyacrylate and polyurethane is 10-50%, and the nanoparticles are surface-modified nanoparticles. USE - Used as interpenetrating network superhydrophobic dispersion. ADVANTAGE - The dispersion: is safe and non-toxic; can form film on various types of substrates; can achieve rapid curing under natural conditions; has high bonding strength to the substrate; and has good transparency, abrasion resistance, chemical resistance, excellent super-hydrophobic effect, maximum contact angle of water droplets of 164 degrees , and rolling angle of less than 5 degrees . DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the superhydrophobic dispersion, comprising (i) uniformly dispersing the hydrophilic nanoparticles in a mixture of ethanol and water, adding silane coupling agent and alkyl silicate under stirring at room temperature, reacting, and centrifugal drying to form surface-modified nanoparticles, (ii) mixing diisocyanate, macromolecular polyol, crosslinking monomer and surface-modified nanoparticles obtained in step (i), reacting to form polyurethane prepolymer, adding hydrophilic chain extender to react, then adding solvent to control the viscosity of the system, after capping and emulsification, and stirring at room temperature to form an aqueous polyurethane dispersion, (iii) using the polyurethane dispersion obtained in step (iii) as a seed emulsion, adding acrylate monomer and oil-soluble initiator, and stirring and pre-emulsifying at high speed to obtain a pre-emulsion, (iv) adding certain amount of water to the reaction vessel, raising the temperature to 70-80 degrees C, slowly dropping the pre-emulsion into the water, increasing the temperature to 80-90 degrees C and continuing reacting for 0.5-2 hours, and cooling to room temperature to obtain an interpenetrating network superhydrophobic dispersion.