▎ 摘 要
NOVELTY - A graphene nanomaterial separation preparation method comprises dissolving graphite carbon nanomaterial in lubricating oil with viscosity at 40 degrees C of 14-25 mm2/s and density at 15 degrees C of 0.80-0.85 g/cm3, obtaining solution, repeatedly grinding for 2-6 hours, standing for 30-90 days, separating precipitate, and taking upper layer as graphene. USE - Graphene nanomaterial separation preparation method.