摘要
采用广角X射线、扫描电子显微镜、组织捣碎分裂等方法,对在四种凝固浴体系中成形的多聚甲醛/二甲基亚砜(PF/DMSO)法纤维的结构和原纤化倾向进行分析。研究表明,在含NH_3的凝固浴体系中形成的纤维,其结晶度、晶体尺寸和取向度均比水体系或酸体系纤维的小,结构均匀性有所改善,原纤化倾向减少。在氨体系凝固浴中添加KOH,纤维性能进一步改善,达到干强1.97—2.14cN/dtex、干伸15—26％、勾强0.52—0.63cN/dtex,具有实际应用价值。
By means of WAXT, SEM, beaten-disintegration methods the crystallitestructure and the antifibrillation of fiber obtained from four types of coagu-lating bath system have been studied. The result shows that the crystallinity,crystal-size and orientation degree of fibers obtained from coagulating bathsystem containning NH_3 are smaller than that of fibers obtained fromwater or acid system. The evenness and the fibrillation trend is decreased.Adding KOH into coagulating bath containning NH_4, the properties of fibersare more improved. The physico-mechanical properties of the fibers obtained have a conditional strength of 1.97-2.14cN/dtex, a conditionalelongation of 15-26%, and a loop strength of 0.52-0.63cN/dtex. Thisfiber. will be of value to use in practice.
出处
《广东化纤》
1992年第3期1-8,共8页
Guangdong Chemical Fiber
关键词
多聚甲醛
二甲基亚砜
人造纤维
para formaldehyde
dimethyl sulfoxide
fiber structure
fibrillation
