The invention discloses an environment-friendly 
coating for a steel ring wheel. The environment-friendly 
coating is prepared from the following components: a 
polyurethane emulsion, 
butyl acetate, vinyl 
silicone oil, nanometer titania, attapulgite, 
mica powder, 
acetylcholine, water, aluminum borate 
whisker, 
menthyl acetate, vegetable 
gelatin, a 
plant extract and a coalescing agent. After the 
coating is formed into a film, the film is high in 
hardness, good in abrasion resistance, short in hard 
drying time, good in abrasion resistance and fracture resistance, excellent in abrasion resistance and good in 
adhesive force. The prepared coating is good in stability, has better stability after being used for a long time, and is low in possibility of 
cracking, and fine cracks are low in possibility of expanding and better in repairability, so that the intrinsic strength and the stability of the coating are greatly improved, and the 
life span is greatly prolonged. According to the coating, through synergetic cooperation function of the components, the 
life span of the coating film formed by the coating is greatly prolonged, and is increased by 400% as compared with that of the coating film formed by the common 
polyurethane emulsion coating.