▎ 摘　　要

NOVELTY - Preparing easily dispersed pigment by using graphene modified CI pigment red 179 comprises (i) adding single-layer graphene or single-layer graphene oxide powder and solvent into the water, stirring and mixing for 1-2 hours, adding CI pigment red 179, time is 0.5-1 hour, continuously stirring and pulping for 0.5-1 hours to obtain the pigment slurry; (ii) grinding and adding non-ionic surfactant, then stirring and pulping for 0.5-1 hour, and grinding and dispersing the slurry by sand mill; and (iii) adding anionic surfactant to the slurry after drying and grinding and dispersing and drying by the spray dryer. USE - The method is useful for preparing easily dispersed pigment by using graphene modified CI pigment red 179. ADVANTAGE - The method: uses graphene to modify C.I. pigment red 179 to obtain easily dispersible pigments with high tinting power, small particle size, more concentrated particle size distribution, and good dispersibility in coatings and inks; has tinting strength can reach 129%, reduces average particle size from 24.140-4.482 mu m, the particle size distribution is more concentrated, and obtains pigment particles with soft texture and easy to disperse.