▎ 摘　　要

NOVELTY - Preparing graphene comprises (a) dissolving hyperbranched polyethylene in organic solvent-A in mass ratio of 8-16:1 and adding natural graphite, fully stirring to make the hyperbranched polyethylene adhered on the surface of the natural graphite, and completely removing the solvent to obtain first mixture, (b) adding the first mixture into a ball milling tank for ball milling to obtain first product, (c) placing the first product in the organic solution-B, fully ultrasonic mixing, centrifuging the obtained mixed solution, and taking out 60-90% supernatant to obtain graphene solution. USE - The graphene is useful for preparing antistatic plastic (claimed). ADVANTAGE - The method improves the yield and quality of graphene, and greatly improves the antistatic performance of HDPE when the graphene addition amount is small. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing antistatic plastic, comprising (i) preparing the graphene solution, (ii) adding high density polyethylene into the graphene solution, stirring and mixing, using cold air to sweep, removing solvent, placing in vacuum oven to remove solvent for 3-24 hours in vacuum to obtain second mixture, where the feeding mass ratio of the graphene and the high density polyethylene is 1.5-10%:1, and (iii) forming the second mixture by hot pressing.