The invention relates to a protective
coating for aerogenerator vanes and a preparation method thereof, wherein the protective
coating has the advantages of excellent
ultraviolet radiation resistance, abrasion resistance,
stain resistance,
corrosion resistance,
adhesive force and flexibility. The preparation method uses hydroxyl
acrylate resin as a base material of the surface protective
coating for the aerogenerator vanes and uses the mixture of HDI biuret and HDI tripolymer as a curing agent. The coating consists of a component A and a component B, wherein the component A comprises the following materials in portion by weight: 10 to 55 portions of the hydroxyl
acrylate resin, 1 to 5 portions of abrasion resistant and
stain resistant auxiliary agent, 0.2 to 0.4 portion of
ultraviolet stabilizer, 10 to 15 portions of environment-friendly
organic solvent, 15 to 20 portions of pigments and fillers, 2 to 5 portions of delustering agent, 0.15 to 0.55 portion of dispersing agent, 0.01 to 0.3 portion of
drying agent, and 0.25 to 0.55 portion of
levelling agent; the component B comprises 1 to 15 portions of the HDI biuret and 1 to 15 portions of the HDI tripolymer; and the
mass ratio of the component A to the component B is 2-6:1. When in use, the components A and B are mixed and stirred evenly in proportion, and then the mixture is adjusted to proper
viscosity for construction by using a spraying method.