▎ 摘　　要

In this paper, a method was proposed for obtaining a stable and homogeneous Pickering emulsion for carbon fiber (CF) sizing agent. Graphene oxide (GO) sheets and surfactants as the mixed emulsifiers system, epoxy resin as the primary film former, the CF sizing agent emulsion was developed by phase inversion emulsification method based on the stability principle of Pickering emulsion. Meanwhile, the factors that affected the performances of the emulsion, including the size of GO sheets and pH value, were investigated intensively by centrifuge, electrophoresis apparatus and laser particle size analyzer. According to scanning electron microscope observation, the CF surface was coated with GO and film former. The static contact angle tests indicated the wetting performance between the sized CF and epoxy resin was improved. Moreover, the tensile strength of single CF sized with the Pickering emulsion showed an increase compared with that of T700 CF. This research shows the huge potential for the fabrication of GO-based Pickering emulsion for CF sizing agent.