Patent ID: 8742000

Claim:
A coating composition, characterized in that the starting materials of the coating composition consists of nano SiO 2 , film-forming substance, film-forming aid, accelerator, acid, and water, and the coating composition has pH of 3-9, the film-forming substance is one or more selected from (meth)acrylic acid resin, epoxy resin, styrene-acrylate emulsion, silicone-acrylate emulsion, and polyurethane resin, each with weight average molecular weight of 8,000-200,000; the film-forming aid is one or more selected from silane coupling agent, triethylamine and tetraethyl orthosilicate; the accelerator is one or more selected from sodium silicate, sodium fluoride, sodium pyrophosphate, sodium phosphate, acetone, ethylene glycol, ethanol, and triethyl phosphate; and the acid is phosphoric acid and/or phytic acid.