The invention belongs to the technical field of a new chemical material, and in particular relates to a high-durability super-hydrophobic self-cleaning
coating material and a preparation method thereof. The
coating material of the invention is prepared by curing and
drying nanoparticles with photo-catalytic activity, a low-surface-free-energy
polymer and a cross-linking agent at the
room temperature, wherein the low-surface-free-energy
polymer consists of one or more of polysiloxane
fluoride, dimethyl
silicone polymer and polyphenylene methyl
siloxane, which contain active groups, such as hydroxyl
alkoxy group, carbon-carbon
double bond,
silanol group, siloxy group, and the like; the cross-linking agent is
hydrogen-containing
silicone oil or aminosilane; and the
mass content of the photo-catalytic nanoparticles in the
coating ranges from 10 to 60 percent. The coating is formed into a micro-
nanostructure by
nanoparticle self-organization; a super-hydrophobic self-cleaning coating with
lotus effect is prepared from the coating and a cross-linked filming matrix with low
surface energy; the persistence of a
lotus-shaped super-hydrophobic characteristic of the coating is realized by using the photo-
catalytic decomposition characteristic of an organic
pollutant for the nanoparticles; and thus the material is suitable for large-area construction and has high
weathering resistance andprominent self-cleaning characteristic.