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首页> 外文期刊>Journal of Applied Polymer Science >Some physical properties of various amine-pretreated Nomex Aramid yarns
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Some physical properties of various amine-pretreated Nomex Aramid yarns

机译：各种胺预处理的Nomex芳纶纱线的一些物理性能

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In this study we pretreated Aramid yarns with ethylenediamine (EDA), diethylene triamine (DETA), and triethylene tetraarnme (TETA) under different conditions to study some of their physical properties. The tensile strength retention, dye absorption (basic dye), and wicking height changed increasing pretreatment temperature, time period, and amines concentration. The glass-transition temperature and the density of the crystals were ranked as follows: EDA > DETA > TETA; however, the degrees of the surface void were inverse. We concluded that the polymer chains of the Aramid fibers were rearranged through shrink- age of the pretreated Aramid fibers during pretreatment, and the hydrolysis of the Nomex polymer chains occurred under higher amine concentrations. The former phenomena were confirmed with differential scanning calorimetry, dynamic mechanical analysis, and X-ray diffraction analyses, and the latter were confirmed with Fourier transform infra-red spectroscopy and basic dye adsorption analysis. (C) 2005 Wiley Periodicals, Inc.
机译：在这项研究中，我们在不同条件下用乙二胺（EDA），二乙三胺（DETA）和三乙四胺（TETA）对芳纶纱线进行了预处理，以研究其某些物理性能。拉伸强度保持率，染料吸收（碱性染料）和芯吸高度发生了变化，从而增加了预处理温度，时间和胺浓度。玻璃化转变温度和晶体密度分级如下：EDA> DETA> TETA;然而，表面空隙度是相反的。我们得出的结论是，在预处理过程中，芳族聚酰胺纤维的聚合物链通过预处理后的芳族聚酰胺纤维的收缩而重新排列，而Nomex聚合物链的水解发生在较高的胺浓度下。前者的现象通过差示扫描量热法，动态力学分析和X射线衍射分析得到证实，而后者通过傅里叶变换红外光谱法和碱性染料吸附分析得到证实。 （C）2005 Wiley期刊公司

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