摘要
本文通过广角 X 射线衍射、纤维力学性能的测定、扫描电镜方法等研究了在不同浓度硫酸及氢氧化钠水溶液、不同处理温度和不同时间条件下,具有不同预氧化程度的预氧化腈纶短纤维耐酸碱的基本行为。探讨了预氧化腈纶短纤维在酸碱水溶液作用下,力学性能下降的机理及纤维预氧化程度对耐酸碱性的影响。
In this paper the behavior of preoxided acrylic staple fibers of various preoxidation degrees againstaqueous sulfuric acid and aqueous sodium hydroxide of various concentrations at different temperaturesand various durations is studied in detail by using wide angle X-ray diffractometry,measurements ofstrength,strength retention and breaking elongation,scanning electron microscopy,etc.The mecha-nism of the drop of the mechanical properties of the preoxided acrylic staple fibers under the attack ofthe aqueous acid or alkali solution and the effects of the preoxidation degree on the resistance behavioragainst acid or alkali are also discussed.
出处
《中国纺织大学学报》
CSCD
1993年第4期41-47,共7页
Journal of China Textile University
关键词
聚丙烯腈纤维
短纤维
氧化
耐酸性
polyacrylonitrile fiber
staple fiber
oxidation
aromatization index
acid resistance
alkali resistance
strength
strength retention
