▎ 摘　　要

NOVELTY - Phthalimide functionalized graphene/sisal cellulose nanocrystalline composite thermal conductive film has pie-pie stacking action of graphene and phthalimide to effectively solve the dispersibility of graphene in the cellulose nanocrystallite matrix. The graphene is improved in the cellulose nanocrystal composite thermal conductive film. USE - Phthalimide functionalized graphene/sisal cellulose nanocrystalline composite thermal conductive film. ADVANTAGE - The phthalimide functionalized graphene/sisal cellulose nanocrystalline composite thermal conductive film has simple preparation process, high thermal conductivity, environmental protection and low production cost, and is expected to have potential application prospects in the field of thermal interface materials and other electronic products. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing phthalimide functionalized graphene/sisal cellulose nanocrystalline composite thermally conductive film, which involves: (A) taking mass ratio of (10-90): (90-10) of a phthalimide functionalized graphene aqueous dispersion and sisal cellulose nanocrystallites, mixing, ultrasonically dispersing uniformly, stirring, and filtering into membrane; and (B) pressing film at a mechanical pressure of 10-15 MPa and a pressing time of 5-20 minutes to obtain a phthalimide functionalized graphene/sisal cellulose nanocrystallite composite heat conduction film.