▎ 摘　　要

NOVELTY - Preparing heat-reflective superhydrophobic polyvinylidene fluoride coating comprises e.g. modifying nano-silicon dioxide or graphene oxide separately or together as reaction raw materials, providing the each raw material component separately, dissolving the acrylic resin separately in part of the solvent and completely dissolving it under high-speed dispersion to prepare an acrylic resin solution, adding part of the acrylic resin solution to the solvent to completely dissolve it in a cold water bath, and slowly adding the polyvinylidene fluoride resin to it under the dispersion of the disperser after complete addition to obtain polyvinylidene fluoride slurry one, adding the remaining acrylic resin solution to the solvent and mixing it evenly, adding nano-titanium oxide and modified graphene oxide and nano- silicon dioxide composite particles to it, adding modified nano- silicon dioxide and modified graphene oxide to disperse at high speed to obtain slurry two. USE - The method is useful for preparing heat-reflective superhydrophobic polyvinylidene fluoride coating. ADVANTAGE - The method: has more than 90% heat reflectance of the paint and the water contact angle reaches more than 150 degrees , and has good performance. DETAILED DESCRIPTION - Preparing heat-reflective superhydrophobic polyvinylidene fluoride coating comprises (1) modifying nano-silicon dioxide or graphene oxide separately or together as reaction raw materials, providing the each raw material component separately, (2) dissolving the acrylic resin separately in part of the solvent and completely dissolving it under high-speed dispersion to prepare an acrylic resin solution with the mass concentration controlled at 30-50%, adding part of the acrylic resin solution to the solvent to completely dissolve it in a cold water bath, and slowly adding the polyvinylidene fluoride resin to it under the dispersion of the disperser after complete addition, where the adjustment frequency is 2500-3000 revolutions/minutes for 30 minutes to obtain polyvinylidene fluoride slurry one, where the scraper fineness meter measures the fineness to ensure that the fineness is below 25, (3) adding the remaining acrylic resin solution to the solvent and mixing it evenly, adding nano-titanium oxide and modified graphene oxide and nano- silicon dioxide composite particles to it, adding modified nano- silicon dioxide and modified graphene oxide to disperse at high speed to obtain slurry two and (4) adding the polyvinylidene fluoride slurry one, the slurry two, amino resin, and the remaining acrylic resin to the remaining solvent, adding leveling agent, wetting and dispersing agent, defoaming agent, roll coating after high speed stirring, and baking at 200-300 degrees C for 50-90 seconds. An INDEPENDENT CLAIM is also included for heat-reflective superhydrophobic polyvinylidene fluoride coating.