Preparation method of high strength superhydrophobic coating

The invention discloses a preparation method of a high strength superhydrophobic coating; nano particles or nano and micron mixed particles are dissolved in an organic solvent, materials containing low surface energy functional groups and a silane coupling agent are used for low surface energy treatment of the particles under the effect of a catalyst; acrylic resin is dissolved in the organic solvent, then the treated particles are added, and under the effect of a curing agent, the particles are mixed and stirred for even dispersion, and then is sprayed to prepare the superhydrophobic coating. According to the method, commonly used fluororesin and other low surface energy materials are used, the superhydrophobic performance can be further improved by repair of unfinished hydrophilic groups of the materials in the components, the fluororesin can be used for modifying silica single molecules and the like to increase the durability of the superhydrophobic performance, the acrylic resin with high mechanical properties, good adhesion and good weatherability is used as matrix resin, and then chemically modified particles are bound to the matrix resin to prepare the coating with better mechanical strength.