▎ 摘　　要

Graphene nanoplatelets (GnPs) were successfully functionalized with a liquid rubber, amine-terminated poly(butadiene-co-acrylonitrile) (ATBN), and the functionalized GnPs (ATBN-GnP) were characterized by microscopic and spectroscopic techniques. Different amounts of ATBN-GnP and pristine GnP were individually incorporated into an epoxy resin to fabricate epoxy composites. Compared with the pristine GnP, ATBN-GnP demonstrated stronger ameliorating effects due to an enhanced GnP-epoxy interfacial adhesion. At 5.0 wt% GnP content, the flexural modulus of GnP/epoxy composite increased by 18.1%, whereas the ATBN-GnP improved the flexural modulus by 22.1% at the same fraction. A remarkable enhancement of quasi-static fracture toughness was obtained at 5.0 wt% GnP and 5.0 wt% ATBN-GnP with 76.2% and 92.8% increase, respectively. Incorporation of 5.0 wt% ATBN-GnP improved thermal conductivity of the neat epoxy by 133.6%, and the thermal conductivity of 5.0 wt% ATBN-GnP/epoxy is about 16% higher than that of the pristine GnP/epoxy. The superior reinforcement of ATBN-GnP is attributed to the strong interfacial bonding between ATBN-GnP and epoxy matrix as confirmed by microscopic observations.