▎ 摘　　要

NOVELTY - Preparing thermally conductive composite material based on three-dimensional vertically aligned graphene framework, comprises (1) mixing graphene oxide and water to form a graphene oxide aqueous solution, evaporating and self-assembling to obtain graphene oxide film; (2) carrying hydrothermal reduction on graphene oxide films to form a three-dimensional layered structure, drying, performing heat treatment under an argon atmosphere to obtain three-dimensional layered graphene framework; (3) compressing three-dimensional layered graphene framework by horizontal molding to obtain a vertically oriented graphene framework, filling the polydimethylsiloxane precursor solution under vacuum conditions, curing, obtaining thermally conductive composite material based on three-dimensional vertically aligned graphene framework. USE - The method is useful for preparing thermally conductive composite material based on three-dimensional vertically aligned graphene framework. ADVANTAGE - The thermally conductive composite material: has light weight, good mechanical properties, strong corrosion resistance and good processability; and is economical.