▎ 摘　　要

NOVELTY - A graphene-based anticorrosive coating comprises 25-75 pts. wt. silicone resin, 25-75 pts. wt. epoxy resin, 2-10 pts. wt. graphene powder, 2-10 pts. wt. phosphate, 3.5-12.5 pts. wt. lamellar mineral, 2-10 pts. wt. pigment, additives comprising 0.5-3 pts. wt. dispersant, 0.1-1 pts. wt. leveling agent, 0.1-1 pts. wt. defoamer, 1-5 pts. wt. anti-settling agent, 10-25 pts. wt. curing agent and 3.5-10.5 pts. wt. hydrophobic particles and 250-500 pts. wt. thinner. The volume ratio of silicone resin and epoxy resin is 1:1. The silicone resin is at least one of acrylic modified silicone resin, epoxy modified silicone resin, a polyester modified silicone resin, polyurethane modified silicone resin, polyimide-modified silicone resin and phenol-modified silicone resin. The phosphate is at least one of zinc phosphate, composite zinc phosphate, zinc phosphochromate, aluminum tripolyphosphate, boron tripolyphosphate, zinc tripolyphosphate, zinc titanate, and zinc borate. USE - Graphene-based anticorrosive coating used as corrosion protection of marine ships, daily metal and metal protection in industry (all claimed). ADVANTAGE - The coating has high-efficiency anti-corrosion performance, and excellent film forming property. The coated substrate has low processing cost, excellent adhesion, stable mechanical property and low curing temperature. The preparation is simple and easy to operate. DETAILED DESCRIPTION - A graphene-based hydrophobic anticorrosive coating comprises 25-75 pts. wt. silicone resin, 25-75 pts. wt. epoxy resin, 2-10 pts. wt. graphene powder, 2-10 pts. wt. phosphate, 3.5-12.5 pts. wt. lamellar mineral, 2-10 pts. wt. pigment, additives comprising 0.5-3 pts. wt. dispersant, 0.1-1 pts. wt. leveling agent, 0.1-1 pts. wt. defoamer, 1-5 pts. wt. anti-settling agent, 10-25 pts. wt. curing agent and 3.5-10.5 pts. wt. hydrophobic particles and 250-500 pts. wt. thinner. The volume ratio of silicone resin and epoxy resin is 1:1. The silicone resin is at least one of acrylic modified silicone resin, epoxy modified silicone resin, a polyester modified silicone resin, polyurethane modified silicone resin, polyimide-modified silicone resin and phenol-modified silicone resin, preferably acrylic modified silicone resin. The epoxy resin is at least one of bisphenol A type epoxy resin, a bisphenol F type epoxy resin and polyphenol glycidyl ether epoxy resin. The phosphate is at least one of zinc phosphate, composite zinc phosphate, zinc phosphochromate, aluminum tripolyphosphate, boron tripolyphosphate, zinc tripolyphosphate, zinc titanate, and zinc borate, preferably zinc phosphate. The lamellar mineral is one or more of diatomaceous earth, talc powder, kaolin, mica powder and quartz powder, preferably diatomaceous earth and talc powder. The pigment is at least one of iron oxide red, iron oxide yellow, iron oxide green, pearl powder and indigo blue, preferably iron oxide red. The thinner is organic solvent comprising at least one of ethyl acetate, acetone, toluene, xylene, and cyclohexane. The talc has particle diameter of 600-1000 mesh. The graphene has 3-10 layers and average diameter of 20-50 mu m. An INDEPENDENT CLAIM is included for preparation of graphene-based hydrophobic anticorrosive coating, which involves polishing stainless steel plate with coarse sandpaper and fine sandpaper respectively, ultrasonically cleaning for 2 minutes, washing with cold water 3 times, wiping with alcohol dipped cotton 2 times and drying, mixing acrylic modified silicone resin and the epoxy resin in a ratio of 1:1, adding power filler to breaker, slowly pouring into mixture, then adding dispersant, leveling agent, defoamer, anti-settling agent and thinner, stirring or ultrasonically dispersing for more than 10 hours at room temperature, adding curing agent, stirring and dispersing for 0.5 hour to form graphene anticorrosive coating, performing coating process by spraying using W-71 type upper pot type spray gun at pressure of 235 bar (kPa) at 45 degrees C and vertical distance of 10-15 cm, curing, drying, placing in muffle furnace or a vacuum drying oven, and heating at 60-80 degrees C for 2 hours at heating rate of 10 degrees C.