| 초록 |
Oxidative stabilization of isotropic pitch fibers (IPF) were required to ensure their infusibility during subsequent carbonization. Since oxidative stabilization was one of the most costly steps in the production of carbon fibers, it was beneficial for the time period required for oxidative stabilization process to be reduced. Recently, many efforts had been made to optimize the time and temperature profile of oxidative stabilization process. In this study, the oxidative stabilization kinetics and microstructures of ozone-treated IPF were investigated. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Raman spectroscopy, X-ray diffractomete (XRD), transmission electron microscope (TEM), and scanning electron microscope (SEM) measurements were performed to characterize the stabilized fibers and carbon fibers. |
