PVA水溶纤维的结构与力学性能的关系  

Relationship between structure and mechanical properties of water-soluble PVA fiber

作　　者：徐建军[1] 李守群[1] 叶光斗[1] 何云[2] 李黎[2] 王志金[2] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065 [2]四川维尼纶厂,四川重庆401254

出　　处：《合成纤维工业》2006年第2期5-7,共3页China Synthetic Fiber Industry

基　　金：中国石化集团公司资助项目(03H184)。

摘　　要：通过甲醇溶剂冻胶纺丝制备水溶温度为5-80℃聚乙烯醇(PVA)水溶纤维,采用X射线衍射、双折射、电子强伸仪等测定了PVA水溶纤维的结晶度、取向度、应力应变曲线。讨论了PVA水溶纤维的结构与力学性能的关系。结果表明:纤维的结晶度和取向度随拉伸倍数的增加而增加,拉伸倍数为16时,纤维力学性能良好,纤维结构均匀,水溶温度范围宽。The polyvinyl alcohol （PVA） fiber water-soluble at 5 -80℃ was prepared with methyl alcohol as a solvent by gel spinning. The crystallinity, orientation degree and stress-strain curves were measured by X-ray diffraetion, birefringence method and electron tensile strength test. The relationship between the structure and mechanical properties of water-soluble PVA fiber was discussed. The result showed that the crystallinity and orientation degree were increased while increasing draw ratio. The PVA fiber had a uniform structure, good mechanical properties and a wide water-soluble temperature range at the draw ratio of 16.

关 键 词：聚乙烯醇纤维 水溶纤维 冻胶纺丝 结构 力学性能 

分 类 号：TQ340.1[化学工程—化纤工业]