Polyhydroxy polysiloxane and wear-resisting super-hydrophobic coating and preparation method

The invention discloses a polyhydroxy polysiloxane and wear-resisting super-hydrophobic coating and a preparation method, and belongs to the field of super-amphiphobic materials. A structural formula of polyhydroxy polysiloxane is shown in the following formula of the description. According to the method, an active hydroxyl group is introduced onto a flexible silica main chain through over protection and deprotection processes, polymethylsiloxane with active hydroxyl group on a side chain is compounded, then the polymethylsiloxane with an active hydroxyl group on a side chain is cross-linked with diisocyanate to form a three dimensional net structure, methyl is orderly and densely arranged on the surface of a substrate, the methyl is very small in polarity and volume, and low in surface tension, thus, a compact low surface energy layer is formed, and a wear-resisting super-hydrophobic material is formed by utilizing cohesive action of isocyanate.