• Decomposition behaviour of Kevlar 49 fibres: Part I. AtTTd

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      https://www.ias.ac.in/article/fulltext/boms/022/07/1013-1023

    • Keywords

       

      Kevlar 49; decomposition; crystallinity; weight loss; hollowness; surface damages

    • Abstract

       

      The structural changes which accompany decomposition of Kevlar 49 fibres atT=500°C and 550°C, respectively, have been elucidated. At both these temperatures, cumulative thermal exposures of specific durations,tcum(T), are required to result in decomposition. The conspicuous features which characterize isothermal decomposition of the fibres are: (i) progressive reduction and an eventual total loss in fibre crystallinity, (ii) progressive loss in weight, (iii) introduction of surface damages, (iv) introduction of hollowness, and (v) deterioration in tensile properties.

    • Author Affiliations

       

      R V Iyer1 Kalyani Vijayan1

      1. National Aerospace Laboratories, Materials Science Division, Bangalore - 560 017, India
    • Dates

       
  • Bulletin of Materials Science | News

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