Polyurethane coating with hydrophobicity, ice hydrophobicity and self-healing capacity as well as preparation method and application of polyurethane coating

The invention relates to a polyurethane coating with hydrophobicity, ice hydrophobicity and self-healing capacity as well as a preparation method and application of the polyurethane coating, and belongs to the technical field of polyurethane materials. According to the invention, bis (3-aminopropyl)-terminated poly (dimethyl siloxane), isophorone diisocyanate, 2-(6-isocyanato hexylaminocarbonyl amino)-6-methyl-4-pyrimidone, hydrophobic nano silicon dioxide and hydrophobic carbon nanotubes are introduced into self-healing polyurethane, so that the self-healing polyurethane is prepared; the material obtained by the invention has efficient self-healing, super-hydrophobic and ice-hydrophobic capabilities, and has excellent mechanical properties. The product can be self-healed at normal temperature, does not need to be frequently replaced, has relatively strong deicing and hydrophobic capabilities, can maintain the surface performance of the coating in rainy and snowy weather, and can be used for surface protectio