▎ 摘　　要

NOVELTY - Composite material comprises functional group of the double-functional polybutadiene rubber including amino and siloxane group. The composite material is a dehydration condensation reaction product of double-functional polybutadiene rubber and graphene oxide through amine group and carboxy group. USE - Used as composite material. ADVANTAGE - The composite material enables that the dehydration condensation reaction of double-functional polybutadiene rubber and graphene oxide has rich dispersion of graphene oxide in polybutadiene rubber and improve the mechanical strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite material comprising dispersing graphene oxide in the first organic solvent to obtain a graphene oxide suspension, dissolving the double-functional polybutadiene rubber in a second organic solvent to form a rubber solution, where the first organic solvent and the second organic solvent are mutually soluble or the same organic solvent, mixing the graphene oxide suspension with the rubber solution, removing the first organic solvent and the second organic solvent to obtain a double-functional polybutadiene rubber/graphene oxide composite precursor, subjecting the double-functional polybutadiene rubber/graphene oxide composite precursor to a dehydration condensation reaction under the action of an initiator to obtain composite material.