▎ 摘　　要

NOVELTY - Coating composition comprises 5-10 pts. wt. negative ion powder graphene slurry, 10-30 pts. wt. aqueous polyurethane, 1-30 pts. wt. deionized water, 10-30 pts. wt. antifoaming agent, 0.5-1 pts. wt. chitin finishing agent 0.5-1 pts. wt. anion powder of grain size 0.1 to 10 mu m. USE - Used as coating composition. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing coating composition comprising firstly mixing the deionized water, chitosan finishing agent, aqueous polyurethane and half of defoaming agent into the stirring device, starting a stirrer, stirring at 500-600 rotations/minutes, orderly adding the anion powder and graphene slurry, continuously stirring for 20-40 minutes, finishing feeding, stirring after adding the antifoaming agent (balance amount) to obtain the product.