Wave-absorbing heat-generating coating for melting ice on wind turbine blade, and preparation method therefor

A method for preparing a wave-absorbing heat-generating coating for melting ice on a wind turbine blade, wherein the method comprises the following steps:

• step 1, in parts by mass, mixing 20 to 40 parts of methylphenyl silicone resin, 25 to 40 parts of epoxy-modified silicone, 10 to 15 parts of titanium dioxide and 8-15 parts of bentonite, stirring, and grinding by colloid-milling to obtain a mixture, component A;
• mixing component A and 650 # polyamide resin to obtain a coating for a bottom layer, spraying the coating for the bottom layer on a substrate, curing, repairing and polishing to obtain the bottom layer;
• and
• step 2, in parts by mass, mixing 60 to 80 parts of diphenol-based epoxy resin and 16 to 22 parts of polyisocyanate-based polyurethane prepolymer, and heating to obtain a polyurethane-modified epoxy resin;
• mixing 12 to 14 parts of a diphenol-based epoxy resin, 3 to 4 parts of a diluent, 0.5 to 1 part of a filler, 3 to 8 parts of cerium-iron alloy nanometer powder and 8 to 12 parts of a curing agent and adding into the polyurethane modified epoxy resin, and then adding 3 to 6 parts of silicon carbide particles and 0.2 to 0.4 parts of a dispersant and stirring to obtain a coating for a surface layer, scrape-coating the coating for the surface layer on the bottom layer, and heating during the scrape-coating process to obtain the surface layer.