中国塑料2024，Vol.38Issue(11)：53-56,4.DOI:10.19491/j.issn.1001-9278.2024.11.009
预氧化程度对聚丙烯腈预氧化纤维结构与性能的影响
Effect of pre-oxidation degree on structure and properties of polyacrylonitrile thermal oxidative stabilized fiber
摘要
Abstract
Thermal oxidative stabilized(TOS)fibers with different pre-oxidation degrees were prepared by using constant draft polyacrylonitrile(PAN)fibers under air atmosphere according to the pre-oxidation degree obtained from the relative cyclization rate determined by Fourier-transform infrared spectroscopy.The effect of pre-oxidation degree on the chemi-cal and crystal structures,microstructure,and mechanical properties of the resultant TOS fibers were investigated.The results indicated that the conjugated carbonyl groups began to form at a pre-oxidation degree greater than 54.7％and tended to increase gradually.The TOS fibers exhibited new diffuse peaks and ordered structures at a pre-oxidation de-gree of 83.2％,and their cross section presented an obvious radial non-uniform structure,so-called"skin-core struc-ture"along with a decrease in the elongation at break.Therefore,the TOS fibers obtained a cyclization degree of 72％,thus resulting in fewer structural defects and better performance.关键词
聚丙烯腈/预氧化程度/皮芯结构/力学性能Key words
polyacrylonitrile/pre-oxidation degree/skin-core structure/mechanical property分类
化学化工引用本文复制引用
王俊,葛媛,曹安然,张守雷,严泽同..预氧化程度对聚丙烯腈预氧化纤维结构与性能的影响[J].中国塑料,2024,38(11):53-56,4.基金项目
吉林省科技发展计划项目资助(YDZJ202301ZYTS282) （YDZJ202301ZYTS282）
