High-weather-resistance multifunctional rail transit polymer coating as well as preparation method and application thereof

The invention relates to a high-weather-resistance multifunctional rail transit polymer coating as well as a preparation method and application thereof, and relates to the technical field of rail transit coatings. The invention relates to a high-weather-resistance multifunctional rail transit polymer coating which comprises a component A and a component B, the component A comprises the following substances in percentage by mass: 25-35% of organic silicon modified acrylic resin; 5-10% of nano silicon dioxide loaded polyacrylic resin; 4-8% of a functionalized nano aluminum oxide-nano cerium oxide composite material; 25-35% of titanium dioxide; 0.5%-1.0% of a dispersing agent; 20-30% of a solvent; the component B is prepared from the following substances in percentage by mass: 70 to 80 percent of isocyanate resin; and 20-30% of a solvent. According to the high-weather-resistance multifunctional rail transit polymer coating disclosed by the invention, through the synergistic effect of all the components, a paint