陈熙婷,王妮,俞建勇
CHEN Xi-ting1, WANG Ni1,2

• 1:东华大学纺织学院
• 2:东华大学纺织面料技术教育部重点实验室
• 3:东华大学现代纺织研究院

摘要(Abstract)：

通过扫描电镜(SEM)、红外光谱(FT-IR)、力学试验和差示扫描量热法(DSC)等测试方法表征了聚烯烃弹性纤维XLATM的结构和弹性,对比分析了氨纶和XLATM纤维弹性的作用机理。XLATM纤维截面为圆矩形,表面较光滑;分子组成中不存在不饱和双键和非烃类物质,化学结构稳定;晶体中存在准六方晶和正交晶系两种晶型,结晶度为30%,比一般聚烯烃类纤维低很多;常温下处于高弹态,熔程较宽,为45～80℃;该纤维初始模量较氨纶高,在伸长率大于130%后拉伸强度比氨纶小;弹性回复率随伸长率的增加呈非线性下降趋势,塑性变形在180s内随回复停顿时间的延长而减小。
The structure and elasticity of polyolefin based elastic fiber XLATM were characterized through SEM, FR-IT and DSC etc. Comparing to polyurethane, elastic mechanism of XLATM fiber was analyzed. It was found that the fiber was round rectangle in cross section and smooth in surface. Unsaturated C=C band and non-hydrocarbons were not present. There were pseudo hexagonal and orthorhombic crystal structures in the material and the crystallinity was 30 % which was lower than that of common polyolefin fibers. XLATM fiber was in high elastic state at ambient temperature and the melting range was from 45 ℃ to 80 ℃. Initial modulus of XLATM fiber was higher than that of polyurethane, while the strength was lower when e-longation was above 130 %. There was a downward trend in non-linear on elastic recovery of XLATMfiber with the increase of elongation and the plastic deformation decreased with extending dwell time after recovery within 180 s.

关键词(KeyWords)： 聚烯烃弹性纤维XLATM;结构;弹性;表征
polyolefin elastic fiber XLATM, structure, elastic, characterization

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈熙婷,王妮,俞建勇
CHEN Xi-ting1, WANG Ni1,2

参考文献(References)：

• [1]Jinlian Hu,Jing Lu,Yong Zhu.New developments in elastic fibers[J].Polymer Reviews,2008,48:275-301.
• [2]孔庆伟.XLA纤维及其棉包芯纱和低弹抗皱面料的研究与开发[D].苏州:苏州大学,2008.
• [3]王府梅,李京歌,谢璇妍.PTT等纤维的弹性回复性能比较[J].东华大学学报,2004,30(3):90-92.
• [4]Paul Casey,Hongyu Chen Ben Poon,etc,Polyolefin based crosslinked elastic fiber:A technical review of DOW XLATM elastic fiber technology[J].Polymer Reviews,2008,48(2):302-316.
• [5]中西香而,P H索罗曼.红外光谱分析100例[M].科学出版社,1984:10-28.
• [6]宋心远.氨纶的结构、性能和染整[J].印染,2002,28(11):30-35.
• [7]于伟东,储才元.纺织物理[M].东华大学出版社,2002:79-116.