▎ 摘　　要

NOVELTY - Preparation of graphene/hydroxyethyl cellulose composite material involves dissolving graphene oxide in dimethylformamide solution, stirring, obtaining graphene solution, adding mixed liquid of isopropanol and ethanol to hydroxyethyl cellulose, adding sodium hydroxide solutions with different concentration, stirring, dissolving, basifying, adding mixing liquid of acrylonitrile and dichloromethane, heating, adding graphene oxide solution, reacting, etherifying with acetic acid, adding resultant mixture to ethanol, precipitating, washing with ethanol or deionized water, and drying. USE - Preparation of graphene/hydroxyethyl cellulose composite material (claimed). ADVANTAGE - The method enables preparation of graphene/hydroxyethyl cellulose composite material having excellent conductivity and dielectric property.