▎ 摘　　要

Effective thermal shielding materials with perfect anti-ablation and mechanical performances play a pivotal role of protecting aircraft suffering harsh conditions. With graphene oxide (GO) and nano-silicon spheres as raw material, a layered Si/GO precursor film was prepared by filtration, followed by in-situ carbothermal reaction to obtain the composite film of SiC and graphene (SiC/G film). The as-obtained material shows a sandwich-like anisotropic structure, with excellent anti-ablation performance in ablation experiment. The film exhibit a high mechanical stiffness with hardness and elastic modulus of 0.56 and 3.40 GPa, respectively. Besides, in-and out-plane thermal conductivity are 27.98 and 0.15-0.23 Wm(-1) K-1, respectively. In the film, the orientated graphene sheets are not only the scaffold to retain the integrity of the film, but also improve in-plane thermal dissipation efficiency. Meanwhile, in-situ grown SiC particles act as the major anti-ablation functional layer, as well as the interlayer spacer to retard the heat transfer perpendicular to the film. Therefore, this novel sandwich-like structure composed by SiC and graphene layers could offer great protection from multiple ablation shocks in many fields. (C) 2016 Published by Elsevier Ltd.