Weather-resistant type heat-dissipating coating and preparation method thereof

The invention discloses a weather-resistant type heat-dissipating coating. The coating comprises the following raw materials by weight: 1 to 3 parts of triethanolamine oleic soap, 12 to 15 parts of a styrene-maleic anhydride copolymer, 6 to 10 parts of propargyl alcohol, 90 to 100 parts of tetrahydrofuran, 4 to 7 parts of graphene, 16 to 20 parts of nanometer silicon dioxide, 0.2 to 0.3 part of a silane coupling agent KH560, 700 to 800 parts of dimethylformamide, 4 to 5 parts of sodium nitride, 0.04 to 0.05 part of aluminum chloride, 1.6 to 2 parts of a sodium ascorbate solution with a concentration of 2 to 3%, 1.8 to 2 parts of a copper sulfate solution with a concentration of 2 to 3%, 120 to 130 parts of high-density polyethylene, 2 to 3 parts of microcrystalline wax, 0.3 to 0.5 part of diphenyl imidazoline, 1 to 2 parts of calcium stearate, 0.1 to 0.2 part of sp, 2 to 3 parts of tricalcium silicate and 2 to 4 parts of dibutyl phthalate. The coating provided by the invention can form a stable coating film on the surface of a base material, and the surface of the coating film has high strength, strong weather resistance, high anti-stripping strength and good protection effect.