▎ 摘　　要

NOVELTY - A graphene/polyvinyl alcohol flexible compounded film having negative dielectric property is prepared by dissolving polyvinyl alcohol powder in water to prepare 5 wt.% polyvinyl alcohol solution, adding graphene powder and silane coupling agent to solution A, uniformly mixing, surface modifying graphene to obtain solution B, drying to obtain silane coupling agent processed graphene, mixing with polyvinyl alcohol solution to obtain slurry having 20% graphene powder, cast molding and drying and solidifying. USE - The method is used for preparing graphene/polyvinyl alcohol flexible compounded film having negative dielectric property. ADVANTAGE - The method has simple preparation process, low preparation cost and easy mass production.