Influence of sizing molecular weight on the properties of carbon fibers and its composites

Three different molecular weight of sizing agent on the performances of carbon fibers and carbon fibers composites are investigated. Atomic force microscopy (AFM) was used to characterize carbon fiber surface topographies. Wetting and surface energy along with contact angles were determined by the dynamic contact angle analysis test (DCAT). The single fiber strengths and Weibull distributions were also studied in order to understand the effect...