▎ 摘　　要

NOVELTY - A primer comprises 39-41 pts. wt. acrylate emulsion, 7.2-8.2 pts. wt. waste polystyrene foam, 4.1-5.1 pts. wt. graphene, 0.7-0.9 pt. wt. nano-zinc oxide, 10-12 pts. wt. diatomaceous earth, 3-5 pts. wt. Vaseline (RTM: Petroleum jelly), 2.1-2.5 pts. wt. sodium caseinate, 9-10 pts. wt. pentaerythritol, 3-4 pts. wt. reed rhizome extract, 1.2-1.4 pts. wt. dimethyl cyclosiloxane, 18-21 pts. wt. pigments and balance amount of deionized water. USE - Primer for coating metal. ADVANTAGE - The primer has improved hardness, chemical resistance, UV resistance, water resistance, powder resistance and corrosion resistance, and is nontoxic, odorless, safe and environmentally friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of primer, which involves mixing raw materials, high-speed stirring for 10-15 minutes, crushing in ball mill, adding mixed solvent, dispersing, degassing under vacuum conditions for 1-2 hours and filtering.