▎ 摘　　要

NOVELTY - The preparation method of coating involves adding 0.4-0.8 g/l graphene solution, 1-2 %mass polyethylene glycol, 1.5-2.5 %mass polyvinyl alcohol and 1.5-2.5 %mass hydroxyethyl cellulose to a water bath and then uniformly mixing, controlling the temperature at 60-80 degrees C and then ultrasonically reacting for 1-2 hours, adding nano-titanium dioxide and silver nitrate solution to the mixture and reacting for 0.5-1 hour, stirring the mixture for 2-4 hours, optionally adding styrene-acrylic emulsion, silicone-acrylic emulsion or pure acrylic emulsion to the mixture, and stirring. USE - The method is useful for preparation of coating (claimed). ADVANTAGE - The coating does not contain formaldehyde. DETAILED DESCRIPTION - The preparation method of coating involves adding 0.4-0.8 g/l graphene solution, 1-2 %mass polyethylene glycol, 1.5-2.5 %mass polyvinyl alcohol and 1.5-2.5 %mass hydroxyethyl cellulose to a water bath and then uniformly mixing, controlling the temperature at 60-80 degrees C and then ultrasonically reacting for 1-2 hours, adding 0.5-1.5 %mass nano-titanium dioxide and 0.2-0.6 %mass or 0.01 mol/l silver nitrate solution to the mixture and then reacting for 0.5-1 hour, mechanically stirring the mixture for 2-4 hours, optionally adding 10-20 vol.% styrene-acrylic emulsion, silicone-acrylic emulsion or pure acrylic emulsion to the mixture, and stirring.