▎ 摘　　要

NOVELTY - A coating comprises component (A) and component (B). The component (A) comprises 30-60 pts. wt. aqueous epoxy resin, 15-30 pts. wt. aqueous polyurethane resin, 8-15 pts. wt. graphene oxide, 4-6 pts. wt. hydroxyethyl cellulose, 0.8-1.5 pts. wt. dodecyldimethylbenzylammonium chloride, 0.5-1.3 pts. wt. N-isopropylacrylamide, 0.3-0.5 pt. wt. antifoaming agent, 2-4 pts. wt. nano-additive, 10-18 pts. wt. pigment filler, 0.5-1.5 pts. wt. wetting agent and 40-60 pts. wt. water. The component (B) is hexamethylene diisocyanate curing agent. The weight ratio of the component (A) and component (B) is 8-10:1. USE - Coating. ADVANTAGE - The coating has excellent corrosion resistance, weather resistance and mechanical strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of coating, which comprises adding water, wetting agent and aqueous epoxy resin to reaction container, stirring at speed of 600-750 rpm for 30-35 minutes, then adding aqueous polyurethane resin and continuously at a rate of 600-750 rpm for 60-70 minutes, dispersing graphene oxide in water to obtain graphene oxide dispersion liquid, oscillating at ultrasonic frequency of 50 KHz for 15-20 minutes, stirring at speed of 1200-1500 rpm for 50-60 minutes, then adding dodecyldimethylbenzylammonium chloride, hydroxyethyl cellulose and N-isopropylacrylamide to reaction vessel and stirring at speed of 800-850 rpm for 40-50 minutes, then adding antifoaming agent, nano-additive, pigment and filler and stirring at speed of 900-1000 rpm for 60-80 minutes, filtering and discharging.