▎ 摘　　要

NOVELTY - Preparing barium-calcium carbonate modified composite epoxy resin paint comprises e.g. graphene oxide dispersion, reacting with p-phenylenediamine, filtering, washing with deionized water, washing with absolute ethanol, and drying to obtain oxidized graphene-p-phenylenediamine composite material, then stirring the barium sulfate suspension, adding composite modifier and stirring, filtering, drying and screening to obtain modified barium sulfate, drying calcium carbonate, adding silane coupling agent, titanate coupling agent, heating and drying the modified calcium carbonate, then mixing deionized water ultrasonic dispersion of graphene oxide-p-phenylenediamine composite material with deionized water ultrasonic dispersion of aqueous epoxy resin, dispersing and stirring, layering, heating the mixed liquid with aqueous epoxy curing agent, ultrasonicating, adding emulsifying agent, dispersing agent, defoaming agent, wetting agent, and ultrasonicating to obtain final product. USE - The method is useful for preparing barium-calcium carbonate modified composite epoxy resin paint. DETAILED DESCRIPTION - Preparing barium-calcium carbonate modified composite epoxy resin paint comprises graphene oxide dispersion, then adding p-phenylenediamine, stirring and dissolving, reacting at constant temperature, filtering, washing with deionized water, centrifugally washing with absolute ethanol, and drying to obtain oxidized graphene-p-phenylenediamine composite material, then stirring the barium sulfate suspension in constant temperature groove, adding composite modifier and stirring, filtering when it is hot, drying, grinding, screening to obtain modified barium sulfate, then drying calcium carbonate in a vacuum oven, adding silane coupling agent, titanate coupling agent, heating and drying the modified calcium carbonate, then mixing the deionized water ultrasonic dispersion of the graphene oxide-p-phenylenediamine composite material with the deionized water ultrasonic dispersion of the aqueous epoxy resin, ultrasonically dispersing and stirring, layering, pouring the water, heating the mixed liquid with aqueous epoxy curing agent in an oven, ultrasonicating, adding emulsifying agent, dispersing agent, defoaming agent, wetting agent, and continuously ultrasonicating to obtain final product.