▎ 摘　　要

NOVELTY - The preparation method of dispersion liquid involves weighing graphite flakes and graphene oxide suspension, washing and then drying, adding solvent and then uniformly stirring, ultrasonically washing the mixture and then homogenizing, adding dispersant and surfactant and then stirring, ultrasonically washing the mixture and then centrifuging and removing graphene particles. USE - The method is useful for preparation of dispersion liquid, which is useful in lubrication and thermal conductive composite material. ADVANTAGE - The method enables preparation of dispersion liquid with excellent dispersibility.