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首页> 外文期刊>Textile Research Journal >Fatigue Behavior of Aramid Nonwoven Fabrics Under Hot-Press Conditions Part Ⅰ: Mechanical Properties
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Fatigue Behavior of Aramid Nonwoven Fabrics Under Hot-Press Conditions Part Ⅰ: Mechanical Properties

机译：芳纶无纺布在热压条件下的疲劳行为第一部分：机械性能

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摘要

Tensile and compressive behaviors of aramid and polyamide nonwoven fabrics are studied under hot-press fatigue conditions. Tensile breaking strength and the maximum modulus of tensile strength-elongation curves for the polyamide nonwovens gradually decrease with increasing fatigue after around 15 cycles, while those of the aramid nonwovens substantially increase. Aramid nonwoven values are about three to five times those of the polyamide nonwovens. These fatigue behaviors result from the differences in heat resistance and mechanical properties of polyamide and aramid fibers, indicating that polyamide fibers greatly deteriorate with heat while aramid fibers deteriorate only a little. Although we have assumed that the aramid nonwoven fabrics compact their fiber assemblies under increasing cycles, there are no substantial differences in the compressive behaviors of polyamide and aramid nonwovens.
机译：研究了芳族聚酰胺和聚酰胺无纺布在热压疲劳条件下的拉伸和压缩行为。聚酰胺非织造布的拉伸断裂强度和最大拉伸强度-伸长率曲线的模数在约15个循环后随着疲劳的增加而逐渐降低，而芳纶非织造布的拉伸强度和最大拉伸强度-伸长率曲线的最大模量则显着增加。芳纶非织造布的价值约为聚酰胺非织造布的价值的三到五倍。这些疲劳行为是由聚酰胺和芳族聚酰胺纤维的耐热性和机械性能的差异引起的，表明聚酰胺纤维受热而大大劣化，而芳族聚酰胺纤维仅稍有劣化。尽管我们假设芳族聚酰胺无纺布在增加的循环次数下会压缩其纤维组件，但聚酰胺和芳族聚酰胺无纺布的压缩性能没有实质性差异。

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