▎ 摘　　要

To investigate the effects of carbon nanotubes (CNTs) on the performances of graphene (Gr)/trans-1,4-polyisoprene (TPI)/natural rubber (NR) composites, CNTs/Gr/TPI/NR vulcanizates were fabricated via the partial replacement of Gr with CNTs. The results displayed that partially substituting CB with Gr or hybrid in a Gr/CNTs ratio of 2 enabled the TPI/NR composites to embrace simultaneously improved wet-skid resistance, lowered rolling resistance as well as heat buildup (HBU), which is conducive to prepare energy efficient tire rubber. The hybrids of Gr with CNTs raised the crosslinking densities of TPI/NR vulcanizates, and elevated the tensile strength, tear strength, modulus at 300%, hardness, and wear resistance of TPI/NR composites more efficiently than Gr only. Besides, hybrids with higher Gr/CNTs ratio aided in retaining or lifting the resilience of TPI/NR vulcanizate, and raising the thermal conductivities of vulcanizates at 20 and 150celcius. So, the partial substitution of CB with Gr/CNTs hybrids in proper ratio is supposed to upgrade the overall properties of TPI/NR vulcanizates.