▎ 摘　　要

NOVELTY - Graphene modified nano silver-copper-zinc-aluminum coating composition comprises 10-20 wt.% zinc-aluminum alloy powder, 1-3 wt.% nano-copper powder, 1-2 wt.% graphene modified nano silver composite antifouling agent, 60-75 wt.% siloxane resin, 5-10 wt.% hydroxy silicone oil, 0.1-0.3 wt.% carbon fiber, 3-6 wt.% sericite powder, 0.5-1 wt.% dispersant, 0.1-0.2 wt.% heptadecafluorodecyltrimethoxysilane, and 3-5 wt.% curing agent. USE - The graphene modified nano-silver-copper-zinc-aluminum coating composition is used on marine device. ADVANTAGE - The coating has good low surface energy effect, easily remove marine organisms, has good bactericidal and antibacterial performance, effectively inhibits attachment and reproduction of microorganisms, utilizes barrier and shielding effect of graphene to effectively improve the coating's resistance to seawater erosion, uses zinc aluminum alloy as the internal micro anode to protect copper and silver from corrosion, maintains anti-fouling effect for long time, is simple to construct, environmentally friendly and safe, is coated on various anticorrosive primers, and has good compatibility. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing graphene modified nano silver copper-zinc aluminum coating composition, comprising (i) mixing siloxane resin and heptafluorodecyltrimethoxysilane, adding hydroxy silicone oil and dispersant in sequence, and uniformly mixing to obtain slurry, (ii) adding graphene-modified nano-silver composite antifouling agent, nano-copper powder, zinc-aluminum alloy powder, carbon fiber and sericite powder into the slurry obtained in (i), and uniformly stirring to obtain mixture, (iii) grinding the mixture obtained in (iv), and discharging the material to obtain coating slurry, and (iv) uniformly mixing the coating slurry and curing agent to obtain graphene modified nano-silver-copper-zinc-aluminum coating composition; and (2) Use of graphene modified nano-silver-copper-zinc-aluminum coating composition on marine device, drying and curing, and obtaining marine antifouling coating.