▎ 摘　　要

NOVELTY - Preparing graphene comprises (i) mixing a graphene oxide dispersion liquid and a water-soluble polymer to obtain a mixed liquid, where the molecular weight of the water-soluble polymer is 3000-8000, (ii) reacting the mixed liquid with a reducing agent to obtain a reaction liquid, and (iii) filtering the reaction solution through a membrane to obtain graphene. USE - The graphene is useful in coatings and rubber. ADVANTAGE - The method prevents graphene from stacking and agglomerating. The graphene has a good sheet structure, a thin sheet layer, good dispersion in water and organic solvents, and good electrical conductivity.