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Physical Properties of Nomex Yarns Pretreated with Various Amines

机译:各种胺预处理的Nomex纱线的物理性质

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摘要

In this study, we pretreat aramid (Nomex~(~R)) yarns with ethylene diamine (EDA), diethylene triamine (DETA), and triethylene tetramine (TETA) under different conditions and study some physical properties. The values of changes in tensile strength retention ΔTSR increase and then decrease, and basic dye uptake [D]_f and wicking height WH increase with increased pretreating temperature, time period, and amine concentration. The rank of the minus values of ΔTSR for the pretreated fibers is EDA > DETA > TETA, but the tendencies of the plus values of ΔTSR and of [D]_f, WH, and shrinkage are inverse at a given pretreating temperature, time period, and amine concentration. The glass transition temperatures and densities of the crystals are ranked as EDA > DETA > TETA. Surface etching on TETA pretreated fibers is more obvious than on EDA pretreated fibers. The polymer chains of aramid fibers may rearrange through shrinkage of the fibers during pretreatment, and some degradation of the Nomex polymer chains may occur at higher amine concentrations.
机译:在这项研究中,我们在不同条件下用乙二胺(EDA),二亚乙基三胺(DETA)和三亚乙基四胺(TETA)对芳纶(Nomex〜(R))纱线进行预处理。拉伸强度保持率ΔTSR的变化值先增大然后减小,并且随着预处理温度,时间和胺浓度的增加,碱性染料吸收量[D] _f和芯吸高度WH增大。预处理纤维的ΔTSR负值的等级为EDA> DETA> TETA,但在给定的预处理温度,时间段内,ΔTSR的正值和[D] _f,WH和收缩率的趋势相反。和胺浓度。晶体的玻璃化转变温度和密度按EDA> DETA> TETA排序。在TETA预处理的纤维上进行的表面腐蚀比在EDA预处理的纤维上更为明显。芳族聚酰胺纤维的聚合物链可能会在预处理期间通过纤维的收缩而重新排列,并且在较高的胺浓度下,Nomex聚合物链可能会发生降解。

著录项

  • 来源
    《Textile Research Journal》 |2003年第5期|p.395-400|共6页
  • 作者单位

    Department of Textile Engineering, Chinese Culture University, Taipei, Taiwan 11114, Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 纺织工业、染整工业;
  • 关键词

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