▎ 摘　　要

NOVELTY - Preparing poly-indole modified graphene oxide/acrylic fluorine boron composite antifouling coating comprises e.g. (S1) mixing 70 pt. wt. propylene glycol monomethyl ether, 140 pt. wt. xylene and 10 pt. wt. ethyl acrylate uniformly, heating to 95℃ to obtain mixed solution A, providing 10 pt. wt. methyl methacrylate, 15 pt. wt. acrylic acid, 95 pt. wt. ethyl acrylate, 70 pt. wt. hexafluorobutyl methacrylate, 40 pt. wt. xylene, and 2 pt. wt. 2,4-diphenyl-4- methyl-1-pentene, 2 pt. wt. azobisisobutyronitrile and 8 pt. wt. azobisisovaleronitrile, stirring and mixing to obtain mixed solution B, dropping the combined solution B into the mixed solution A at a uniform speed, where the dropwise addition time of this process is 6 hours to obtain the mixed solution C, providing 0.5 pt. wt. benzoyl peroxide and 20 pt. wt. xylene, and mixing uniformly to obtain a mixed solution D. USE - The method is useful for preparing poly-indole modified graphene oxide/acrylic fluorine boron composite antifouling coating, which is used for cleaning the biological fouling on the surface of hull. ADVANTAGE - The method: is environmentally friendly; improves the water resistance of the coating; enhances the hydrophobicity of the coating; and improves the antifouling performance of the coating. DETAILED DESCRIPTION - Preparing poly-indole modified graphene oxide/acrylic fluorine boron composite antifouling coating comprises (S1) mixing 70 pt. wt. propylene glycol monomethyl ether, 140 pt. wt. xylene and 10 pt. wt. ethyl acrylate uniformly, heating to 95°C to obtain mixed solution A, providing 10 pt. wt. methyl methacrylate, 15 pt. wt. acrylic acid, 95 pt. wt. ethyl acrylate, 70 pt. wt. hexafluorobutyl methacrylate, 40 pt. wt. xylene, and 2 pt. wt. 2,4-diphenyl-4- Methyl-1-pentene, 2 pt. wt. azobisisobutyronitrile and 8 pt. wt. azobisisovaleronitrile, stirring and mixing to obtain mixed solution B, dropping the combined solution B into the mixed solution A at a uniform speed, where the dropwise addition time of this process is 6 hours to obtain the mixed solution C, providing 0.5 pt. wt. benzoyl peroxide and 20 pt. wt. xylene, mixing uniformly to obtain a mixed solution D, dropping the mixed solution D into the combined solution C at a uniform speed, maintaining the dropping time for 0.5 hours, continuously reacting for 1.5 hours while keeping the temperature unchanged to obtain a light yellow acrylic fluororesin, carrying out the whole reaction in a nitrogen environment, heating 15 pt. wt. pyridinetriphenylborane, 75 pt. wt. xylene, and 50 pt. wt. tetrahydrofuran while stirring, heating to 95° C to obtain a mixed solution E, providing the acrylic fluororesin according to the ratio of the molar ratio of acrylic acid in the pyridine triphenylborane to the acrylic fluororesin of 1:1 and adding to the mixed solution E, continuously reacting for 10 hours when the temperature rises to 95-100°C under continuous stirring to obtaina brown and transparent mixed solution F, removing the impurities in the mixed solution F and unreacted pyridine triphenylborane, maintaining the solid content at about 45% by rotary evaporation or adding a small amount of solvent to obtain the acrylic fluoroboron resin AFBP, (S2) stirring the acid and 5 pt. wt. graphite powder for 1 hour under ice-water bath conditions, slowly adding a strong oxidant, maintaining the temperature less than 3°C, continuously stirring for 4 hours, slowly heating to 50°C, continuously stirring for 1 hours, adding 400 pt. wt. distilled water, heating to 95°C and stirring for 15 minutes to obtain a mixed solution G, slowly adding 400 pt. wt. distilled water and 87 pt. wt. hydrogen peroxide to the combined solution G to remove excess oxidant, centrifuging the obtained suspension, pouring off the supernatant, collecting the solid powder, washing with distilled water to pH 7, and freeze-drying the obtained solid powder to obtain graphene oxide (GO), (S3) adding 2 pt. wt. previously prepared GO to 15000 pt. wt. distilled water, uniformly dispersing the GO in the water by ultrasonication, dissolving 4 pt. wt. indole monomer in ethanol, dropwisely adding to the GO suspension, continuously stirring for 12 hours, completely adsorbing the indole monomer on the surface of the graphene oxide sheet, adding 15.14 pt. wt. aqueous solution of ammonium persulfate (APS) prepared in advance dropwise for polymerization, keep stirring, maintaining the resulting solution at 25 °C for 24 hours to allow complete polymerization of the indole monomer, collecting the solid by centrifugation and washing with ethanol to remove unreacted indole monomer and with water to remove APS, drying the polybenzazole-modified graphene oxide and storing in a vacuum oven at 60 °C, and (S4) ultrasonically dispersing the polybenzdole-modified graphene oxide in acrylic acid fluorine boron polymer (AFBP) to obtain a polybenzdole-modified graphene oxide/acrylic fluoride boron composite coating (PGO/AFBP), where the mass fraction of PGO is controlled to be 0.1-1 %.