▎ 摘　　要

NOVELTY - Preparation of composite graphene/polyaniline anti-corrosion coating agent by taking expandable graphite, heating in muffle furnace, and taking out to obtain expanded graphite; taking 3-aminophenylboronic acid and expanded graphite, dispersing in first solvent, ultrasonicating, heating, refluxing and reacting, filtering, and washing to obtain modified expansion graphite; taking modified expansion graphite and aniline monomer to doping acid solution with concentration, ultrasonicating uniformly, and insulating; and taking mixed acid solution, adding to aniline, and dissolving. USE - Method for preparing composite graphene/polyaniline anti-corrosion coating agent (claimed). ADVANTAGE - The agent has simple operation process, good environment protection, high efficiency, and good suitability for industrial production. DETAILED DESCRIPTION - Preparation of composite graphene/polyaniline anti-corrosion coating agent comprises taking expandable graphite, heating at 700-1000 degrees C for 20-60 seconds in muffle furnace, and taking out to obtain expanded graphite; taking 3-aminophenylboronic acid and expanded graphite, dispersing in first solvent, ultrasonicating at mass ratio of 1:1-10, heating at 60-100 degrees C, refluxing and reacting for 2-10 hours, filtering, and washing to obtain modified expansion graphite; taking modified expansion graphite and aniline monomer at mass ratio of 1:2-20 to doping acid solution with 1 mol/L concentration, ultrasonicating uniformly, and insulating at 0-10 degrees C with mixed acid solution to aniline monomer volume ratio of 100-800:1-5; taking mixed acid solution, adding to aniline, dissolving in 1 mol/L ammonium persulfate, dripping at 0.01-0.05 mL/second by constant pressure dripping liquid funnel, reacting for 6-12 hours at 0-10 degrees C, filtering, washing until colorless filtrate, and drying for 12 hours to obtain graphene/polyaniline composite material; and taking 0.25 wt.% graphene/polyaniline composite material and 5 wt.% second solvent, and mixing with epoxy matrix resin paint.