原液着色对聚丙烯腈纤维结构和性能的影响

Influence of dope dyeing on structure and properties of PAN fiber

为促进原液着色腈纶后道产品的开发和推广,采用X射线、扫描电镜等测试方法对原液着色腈纶的结晶、取向及形态结构进行了研究,并对原液着色腈纶纤维的物理机械性能以及热稳定性等进行了分析。结果表明:颜料的加入对腈纶的结晶取向结构以及形态结构都有一定影响,而且这种结构的变化与颜料结构密切相关。同时发现,采用原液着色的方法制备的腈纶其物理机械性能均得到显著改善,纤维的耐热性增强,而吸湿性能则变化不大,其整体性能优于常规腈纶。

In order to promote the development and popularization of downstream products of the dopedyed 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 and little effect on hygroscopic property.Its overall performances were better than that of the conventional PAN fiber.