Multicolor infrared low-emissivity environmental protection coating

The invention relates to a multicolor infrared low-emissivity environmental protection coating. The coating comprises a component A and a component B, and when in use, the component A and the component B are uniformly mixed according to the mass ratio of 1:10. The component A is aliphatic polyisocyanate; the component B comprises the following components in percent by mass: 20 to 30 percent of fluorocarbon resin, 35 to 50 percent of special pigment, 0 to 5 percent of filler, 1 to 5 percent of a dispersant, 0.1 to 1 percent of a flatting agent; 3 to 8 percent of a directing agent, 0.01 to 0.3 percent of a drier, and 15 to 25 percent of a mixed solvent, wherein the special pigment comprises the following pigments: 0 to 10 percent of titanium dioxide rutile, 0 to 5 percent of 1, 4 diketopyrrolopyrrole series organic red pigment, 0 to 25 percent of chromium oxide green, 0 to 8 percent of titanium-nickel yellow pigment, 0 to 5 percent of black pigment, and 50 to 95 percent of coated color metallic pigment. The average emissivity of the thermal infrared band of the coating is 0.40 to 0.65, and the heavy metal content meets the requirement.