▎ 摘　　要

NOVELTY - Antibacterial color steel plate, comprises a metal base material, a plasma layer, a primer layer and a finishing coat layer from bottom to top, the finishing coat layer is formed by solidifying the finishing coat. The finishing coat comprises 50-60 pts. wt. polyester resin, 15-20 pts. wt. filler, 2.2-3.5 pts. wt. curing agent, 5-8 pts. wt. rubber elastomer, 15-18 pts. wt. polymethyl methacrylate, 0.5-1 pts. wt. leveling agent, 2-4 pts. wt. film-forming auxiliary agent, 1-3 pts. wt. thickener, 4-10 pts. wt. carbon fiber, 10-20 pts. wt. antibacterial modified polytetrafluoroethylene. The raw material of the antibacterial modified polytetrafluoroethylene comprises the mass ratio of polytetrafluoroethylene powder, zinc oxide and graphene oxide is 1: (0.03-0.05): (0.4-0.6). USE - Used as antibacterial color steel plate. ADVANTAGE - The anti-bacterial color steel plate has good hydrophobicity, not easy to adhere bacteria and dust, strong antibacterial property and good self-cleaning antifouling effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for Preparing antibacterial modified polytetrafluoroethylene, comprising (i) mixing zinc oxide, deionized water and polyethylene glycol, adjusting the pH value to 9-10 and ultrasonically dispersing to suspension, (ii) adding polytetrafluoroethylene powder into the suspension, mixing uniformly, keeping the pressure at (0.01-0.05) MPa for 3-5 minutes and drying at 50-60℃ for 1-2 hours to obtain modified polytetrafluoroethylene, (iii) using acrylic acid to graft the aggregate polytetrafluoroethylene to obtain graft modified polytetrafluoroethylene and (iv) mixing the grafted modified polytetrafluoroethylene, graphene oxide and deionized water uniformly, adding aniline, rising the temperature at 120-125℃, mixing for 30-60min and drying at 60-65℃; and Producing technique of antibacterial color steel plate, comprising (i) washing and drying the metal substrate by water after degreasing at room temperature, plasma processing the surface of the metal substrate by a plasma device to forming a plasma layer, (ii) coating the metal substrate after the plasma treatment with a primer and drying to forming primer layer and (iii) spraying the topcoat on the primer layer of the metal substrate, rising the temperature to 200-210℃ baking for 10-15 minutes and cooling to forming the topcoat layer.