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Mechanical Property Modification of Aramid Fibers by Polymer Infiltration

机译:聚合物渗透改性芳纶纤维的力学性能

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摘要

High performance organic fibers such as Kevlar, which are highly fibrillar in nature, possess excellent mechanical properties under tension but exhibit very poor strength in compression due to poor interfibrillar attraction. This study involves infiltrating polymeric materials into single aramid filament networks to improve interfibrillar adhesion and thus modify their mechanical properties. Wet-never-dried aramid fibers are used in this study, but it is still necessary to further open the fibrillar network with concentrated sulfuric acid to effectively infiltrate the polymer. While there is significant improvement in tensile strength after polymer infiltration, this is offset by a loss in strength due to the acid treatment. However, there is a significant increase of over 33% in compressive strength as a result of infiltration. The infiltration technique shows excellent promise and could be used for tailoring the properties of fibers with fibrillar morphology for selective end-use applications.
机译:高性能有机纤维(例如凯夫拉尔纤维)本质上是高原纤化的,在拉伸作用下具有出色的机械性能,但由于原纤间的吸引性差,因此压缩强度非常差。这项研究涉及将聚合物材料渗透到单个芳纶长丝网络中,以改善原纤维间的粘附力,从而改变其机械性能。本研究使用从未干燥过的芳族聚酰胺纤维,但仍然有必要进一步用浓硫酸打开原纤维网络,以有效地渗透聚合物。尽管聚合物渗透后的抗张强度有了显着提高,但由于酸处理而导致的强度损失抵消了这一点。但是,由于渗透,抗压强度显着提高了33%以上。渗透技术显示出极好的前景,可用于调整具有原纤维形态的纤维的性能,以用于最终用途。

著录项

  • 来源
    《Textile Research Journal》 |1996年第4期|p.201-208|共8页
  • 作者

    A. MATHUR; A. N. NETRAVALI;

  • 作者单位

    Veratec Division, International Paper, 100 Elm Street, Walpole, MA 02048;

  • 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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