▎ 摘　　要

NOVELTY - Synthesizing a low-cost composite flexible graphite sheet (FGS) comprises: dispersing carbon derivatives in ethanol by bath sonication for 10-60 minutes to obtain solution; adding epoxy resin to the solution and mixing mechanically for 30-120 minutes at a stirring speed of 100-500 rpm at 40-80° C to obtain solution mixture; adding anhydride-based hardener to the solution mixture; mixing the solution mixture comprising anhydride-based hardener and epoxy resin mechanically for 10-60 minutes at a stirring speed of 100-500 rpm; placing FGS in Teflon coated metallic mold and pouring the solution mixture comprising anhydride-based hardener and epoxy resin to obtain a sample composite sheet; curing the sheet at 60-150° C for 2-6 hours; post-curing the sheet at 100-200° C for 1-5 hours; and removing the composite sheet from the mold for EMI shielding, where the synthesized FGS is analyzed for total shielding effectiveness and for physic-chemical properties. USE - The method is useful for synthesizing a low-cost composite FGS for electromagnetic interference (EMI) shielding (claimed) in automotive components, biomedical application, energy production, storage application, electrochemical applications, fire retardant applications, gaskets and high-temperature seals, and sensors. ADVANTAGE - The method: produces composite sheets which are formable and are of sufficient strength to act as structural components and having high thermal conductivity; and is simple hand lay-up technique, highly scalable and easy to manufacture in bulk.