▎ 摘　　要

Graphene oxide (GO) was modified with octadecylamine (ODA) in ethyl alcohol solution to obtain GOODA hybrid. GO-ODA/brominated butyl rubber (BIIR) composites were obtained by solution mixing, in which GO-ODA was well dispersed in nano-sized as confirmed by transmission electron microscope images. The GO-ODA/BIIR composites had much better mechanical properties than BIIR. The stress at 300% extension of BIIR increased 230% after the addition of 10 phr GO-ODA. The improved mechanical properties benefited from the strong interaction between GO-ODA and BIIR. The heat resistance of GO-ODA/BIIR composites was improved with increasing GO-ODA loading. GO-ODA/BIIR nanocomposites had better gas barrier properties than BIIR, and the gas transmission rate of GO-ODA/BIIR (10/100) nanocomposite was only 21.2% of that of BIIR. The improved mechanical, heat resistance and gas barrier properties bring BIIR the potential to be used in a wider range of application areas.