▎ 摘　　要

In this study, we have proposed a rather simple approach to achieving graphene oxide/polyimide (GO/PI) composite films using pre-in situ polymerization. The mechanical, electrical, and carbonization properties of the films were significantly enhanced in the presence of GO. With an addition of 1.0 wt% GO, the tensile strength and Young's modulus were dramatically increased by 103 and 230% respectively when compared with pure PI film. Besides that, composite films show excellent electrical insulative. Especially, the GO/PI film with 1.0 wt% of GO possesses a high carbonization yield about 64.2% (1000 A degrees C). According to the excellent performance, this approach is believed to afford broad application potential in GO-polymer composite materials.