▎ 摘　　要

The hindered phenol antioxidant (HP) was grafted onto graphene oxide (GO) surface, and polyamide 6 (PA6)/GO-HP nano-composite was manufactured via melt processing. More efficient grafting of PA6 molecules onto GO surface was realized by forming hydrogen bonding, and GO was exfoliated and uniformly distributed in matrix. Compared with PA6/HP and PA6/GO, the oxidation induction time, thermal degradation temperature and E-a of PA6/GO-HP composite increased significantly, retention of reduced viscosity and tensile strength were improved, revealing GO-HP hybrid was more efficient than HP or GO to resist thermal oxidation degradation of PA6. Such synergistic thermal oxidative stabilization mechanism was further revealed.