▎ 摘　　要

NOVELTY - Preparing anti-corrosion auxiliary agent of graphene-based composite material comprises dispersing graphene nanosheets in deionized water, adding aniline monomer and phytic acid solution, stirring to obtain dispersion, dissolving ammonium persulfate and phytic acid solution in deionized water to prepare initiator solution, then adding initiator solution to dispersion, insulating, stirring, suction filtration, drying to obtain graphene/polyaniline composite material, dispersing the graphene/polyaniline composite material in deionized water, adding zinc nitrate hexahydrate and aluminum nitrate nonahydrate, stirring, transferring to oil bath, adding sodium hydroxide solution, suction filtering, drying to graphene/polyaniline/lactate dehydrogenase composite material, ultrasonically dispersing in deionized water at room temperature, adding ethanol solution of gamma -aminopropyltriethoxysilane, insulating, stirring, suction filtering, washing with deionized water, and drying. USE - The method is useful for preparing anti-corrosion auxiliary agent of graphene-based composite material. ADVANTAGE - The composite material: can be uniformly dispersed in the resin; and has good physical properties of graphene and lactate dehydrogenase, which can improve the hardness, toughness and impact resistance of the resin coating. DETAILED DESCRIPTION - Preparing anti-corrosion auxiliary agent of graphene-based composite material comprises (a) dispersing graphene nanosheets in deionized water ultrasonically at room temperature, adding aniline monomer and (65-75 wt.%) phytic acid solution, stirring at 0-5 degrees C for 3-6 hours to obtain dispersion, then dissolving ammonium persulfate and 65-75 wt.% phytic acid solution in deionized water to prepare an initiator solution, then adding initiator solution in a drop wise manner to the dispersion at 0-5 degrees C, insulating, stirring for 6.5-9 hours, performing suction filtration, then washing with deionized water, and drying to obtain graphene/polyaniline composite material, (b) ultrasonically dispersing the graphene/polyaniline composite material in deionized water at room temperature, adding zinc nitrate hexahydrate and aluminum nitrate nonahydrate, stirring at room temperature for 2-6 hours, then transferring to an oil bath at 60-70 degrees C under the protection of nitrogen, adding sodium hydroxide solution in a drop wise manner to make the pH of reaction system to 7-9, insulating, stirring for 18-36 hours, suction filtering, washing with deionized water, and drying to graphene/polyaniline/lactate dehydrogenase composite material, and (c) ultrasonically dispersing the graphene/polyaniline/lactate dehydrogenase composite material in deionized water at room temperature, then transferring to an oil bath at 60-70 degrees C under the protection of nitrogen, adding ethanol solution of gamma -aminopropyltriethoxysilane in a drop wise manner, insulating, stirring for 8-24 hours, suction filtering, washing with deionized water, and drying. An INDEPENDENT CLAIM is also included for anti-corrosion paint comprising matrix resin and anti-corrosion auxiliary agent of graphene-based composite material.