Grit powder coating with high impact resistance and method for preparing grit powder coating

The invention provides grit powder coating with high impact resistance.The grit powder coating comprises, by weight, 30-60 parts of epoxy resin, 20-30 parts of alkyd resin, 20-30 parts of organic silicon modified resin, 10-20 parts of fluorocarbon resin, 10-20 parts of polyetherimide, 1-10 parts of ethylenediamine, 1-10 parts of isophorone diamine, 1-10 parts of 1-methylimidazole, 1-10 parts of N-diglycidyl ether, 1-5 parts of sodium lignin sulfonate, 1-8 parts of polyethylene glycol, 1-5 parts of nanometer titanium dioxide, 1-5 parts of gas-phase silicon dioxide, 1-5 parts of light calcium carbonate, 1-3 parts of silane coupling agents, 1-3 parts of dimethyl siloxane, 1-3 parts of dibutyltin dilaurate, 1-3 parts of diatomaceous earth and 1-4 parts of grit agents.The grit powder coating and the method have the advantage that the grid powder coating is excellent in impact resistance under the condition of high film thicknesses (higher than 100 micrometers).