THE OXIDATIVE STABILIZATION OF LARGE DIAMETER MESOPHASE PITCH FIBER
大直径中间相沥青纤维的不熔化处理

The oxidative stabilization process of mesophase pitch fibers was monitored by thermogravimitry (TGA) measurements at several temperatures, so the lowest temperature, at which the process could be carried out, was determined. It is noted that below the softenning point of pitch, the ratedetermining step of the stabilization process was changed from oxygen diffussion to chemical reaction, the homogenity of oxidized fiber was clarifyed and the structure and the properties of carbon fiber were enhanced.