纺织学报 ›› 2013, Vol. 34 ›› Issue (5): 17-20.

• 纤维材料 • 上一篇    下一篇

长丝变形纱成纱熵变对拉伸性能的影响

姜岩   

  1. 温州大学美术与设计学院
  • 收稿日期:2012-02-27 修回日期:2012-12-10 出版日期:2013-05-15 发布日期:2013-05-09
  • 通讯作者: 姜岩 E-mail:john@wzu.edu.cn

Effects of texturing entropy change on tensile properties of textured yarn

  • Received:2012-02-27 Revised:2012-12-10 Online:2013-05-15 Published:2013-05-09

摘要: 熵是状态函数,纱线的相对熵值与其紊乱度的对数成正比,因此成纱熵变对变形纱的内部结构状态及与之相关的性能有显著影响。未经加工的化纤长丝束丝条平直,排列整齐,经变形加工后,系统相对熵值增加,原有的丝条结构被破坏,强度损失率和断裂伸长率显著提高。为查明成纱熵变与变形纱拉伸性能之间的关系性,设计并纺制了10支变形纱样品,并对其有关性能进行了测试分析。结果显示,随着成纱熵变和紊乱度不断增加,变形纱线的强度损失率和断裂伸长损失率迅速上升,可能达到50%左右。在空气变形加工基础上进行异收缩多重变形加工,在成纱熵变和紊乱度值继续增加的同时,强度损失率曲线的上升态势趋缓,断裂伸长损失率曲线则明显下移。

关键词: 熵, 变形纱, 成纱熵变, 强度

Abstract: Entropy was a state function, the relative entropy value of the yarns varied directly to the logarithm of its disorderness degree, hence the entropy changing during texturing influenced the inner structure and properties concerning badly. The ordinary filaments were flat and smooth, this order was ruined by texturing which was growing the relative entropy of the system, thus bigger loss of strength and elongation at break was to be tested. To indicate the relationship between texturing entropy change and the stretching properties, 10 textured sample yarns were designed and spun, then tested. The results showed that along with the increasing both of the entropy change and disorderness degree, both the loss of strength and the loss of elongation at break grew quickly, to 50% or so. When multi-differential shrinking was added, the ATY’s loss of strength curve was flatten, as well as its loss of elongation at break curve was laid down though at the same time of the growing both of the entropy change and disorderness degree.

Key words: entropy, textured yarn, texturing entropy change, strength

中图分类号: 

  • TS106.4
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