▎ 摘　　要

Despite some work on epoxy resin/graphene oxide nanocomposites system, it remains unclear how carbon fiber affects microstructure and mechanical properties of epoxy/graphene oxide (GO) binary blends so far. We here in introduced carbon fiber into the epoxy/GO blends via solution casting method. GO was added 0 %, 1.5 %, 4.5 % and 6 % by weight in the epoxy matrix and the difference in mechanical properties was observed. The composite with 1.5% graphene oxide shows maximum tensile strength (11.8MPa). Carbon fiber was added with epoxy and 1.5 % by weight of graphene oxide to see the difference in mechanical properties with and without carbon fibers. After carrying out mechanical testing it was revealed that incorporating carbon fibers to epoxy/GO nanocomposites with 1.5 % by weight of GO yielded maximum tensile strength as compared to the epoxy/GO nanocomposite. These results gave a new dimension of using carbon fibers with graphene oxide and epoxy resin. We have also compared the tensile strength of pristine graphene/epoxy and graphene oxide/epoxy nanocomposites and found that the tensile strength of graphene oxide/epoxy nanocomposite was relatively higher than that of tensile strength of graphene/epoxy nanocomposites.