Abstract:Fluorosilicone water-repellent fluorosilicone resin (FSi-1) was synthesized by the hydrosilylation with Fluorine-containing and hydrogen-containing polysiloxane(FPHMS), perfluorooctane ethylene(vi-F17) and vinyl modified nano-silica sol(VS) which were prepared from γ-Methacryloxypropyl trimethoxysilane(KH570) as modifier and tetraethoxysilane(TEOS) as hydrolysis precursor by sol-gel method. The coating method was used on hydrophobic coating application. Through FT-IR, TEM, TGA, AFM and WCA measurment, the characterizations of products were detereminded. In additon, the influence of the addition of adding VS on the properties of the coating was also discussed. The results demonstrated that on the surface of coatings showed a large amount of nano-convex which distributing evenly, and the addition of VS is 10%, FSi-1 system is stable. As the FSi-1 content was 0.5%, the light transmittance is not affected. Moreover, The coating hardness is 5H. the WAC increased to 120.5˚ and the rub-bing fastness test pointed that the coating could keep good hydrophobic capitity after rub over 1000 times after modifier VS was added.