Abstract:

In order to promote the development and popularization of downstream products of the dope-dyed PAN, X-ray diffraction analysis and scanning electron microscope (SEM) were used to examine the crystalline structure, orientation and morphology of the dope-dyed PAN fiber. The results indicated that the crystalline structure, orientation and morphological structure were influenced by the addition of pigment. Meanwhile, the physical mechanical properties of the dope-dyed PAN fiber were improved obviously, with heat-resistance enhanced andt little effect on hygroscopic property, its overall performances were better than that of the conventional PAN fiber.