拉伸速率对氨纶力学性能的影响研究The Influence of Tensile Rate on the Mechanical Properties of Spandex
游革新,曾韬,杨波,周秀文
YOU Ge-xin,ZENG Tao,YANG Bo,ZHOU Xiu-wen
摘要(Abstract)：
氨纶被外力拉伸时,拉伸速率与其内部链段运动速率的差值对氨纶的力学性能影响很大。为研究不同拉伸速率对氨纶力学性能的影响,选用晓星公司生产的线密度为622.2 dtex的氨纶,在仅改变拉伸速率的情况下对氨纶进行一系列的弹性试验,测试其应力松弛率、弹性回复率、塑性变形率等力学性能。结果表明:当定伸长率为300%,拉伸速率分别为500、400、300、200和100 mm/min时,随着拉伸速率的增加,氨纶的应力松弛率不断增加,弹性回复率不断减小,塑性变形率不断增大。
When Spandex is stretched, its mechanical properties are affected by the difference between itsinternal segments stretching rate and the external force tensile rate. In order to study the influence of differ-ent external force tensile rate on the mechanical properties of Spandex, the mechanical properties of 622.2dtex Creora;Spandex in a series of Spandex elastic experiment by only change the external force tensilerate are tested, included Spandex's stress relaxation rate, elastic recovery rate and plastic deformation rate.The results show that: when the maximum elongation is 300%, the tensile rates are 500 mm/min, 400 mm/min, 300 mm/min, 200 mm/min, 100 mm/min respectively, Spandex's stress relaxation rate increases, elas-tic recovery rate decreases and plastic deformation rate increases as the tensile rate increases.
关键词(KeyWords)：
氨纶;拉伸速率;应力松弛率;弹性回复率;塑性变形率
Spandex,tensile rate,stress relaxation rate,elastic recovery rate,plastic deformation rate
基金项目(Foundation): 国家自然科学基金项目(U143010011)
作者(Author):
游革新,曾韬,杨波,周秀文
YOU Ge-xin,ZENG Tao,YANG Bo,ZHOU Xiu-wen
DOI: 10.16090/j.cnki.hcxw.2015.09.002
参考文献(References)：
- [1]赵景峰,王玉玲.弹性纤维——氨纶的生产,性能和应用[J].纺织导报,1999(1):8-12.
- [2]宋心远.氨纶的结构,性能和染整(一)[J].印染,2002,28(11):30-35.
- [3]石风俊,刘萍,张颖,等.氨纶包芯纱拉伸性能建模的研究[J].纺织学报,2005,26(2):56-58.
- [4]朱新生,程嘉棋,徐彤,等.氨纶结晶性与回弹性能的关系[J].合成纤维,2006,34(8):17-21.
- [5]廖云,王孟,陈大俊.氨纶拉伸-回复过程的力学行为与热效应[C].上海市化学化工学会2011年度学术年会论文集,2011.
- [6]周方颖,邢建伟.氨纶丝应力松弛性能的测试与分析[J].上海纺织科技,2014,42(7):19-21.
- [7]郭洁清,沈为.CreoraR氨纶拉伸性能的研究[J].针织工业,2008(9):4.
- [8]何曼君,张红东,陈维孝,等.高分子物理[M].复旦大学出版社,2006.
- [9]Vangheluwe L.Influence of strain rate and yarn number on tensile test results[J].Textile research journal,1992,62(10):586-589.