Environmental Effects on the Mechanical Properties of High Performance Fibres

Abstract

Some environmental effects on the mechanical properties of the high performance fibres PBI, Nomex and Kevlar 49 are discussed. Thermal stabilities are given in terms of the changes in mechanical properties such as tensile strength, elongation at break and energy to break after thermal ageing at various elevated temperatures in inert and oxidising conditions. The effects of exposure to sunlight and ionising radiation are shown by similar measurements. The dimensional stability of the fibres at elevated temperatures and the effects of thermal ageing, exposure to sunlight and ionising radiation on the flammability properties of PBI and Nomex are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA032858

Entities

People

  • J. R. Brown
  • N. Mcm. Browne

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Reactants
  • Controlled Atmospheres
  • Elongation
  • Fibers
  • High Temperature
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Organic Chemistry
  • Radiation
  • Reinforced Plastics
  • Resistance
  • Sunlight
  • Tensile Strength
  • Thermal Properties
  • Thermal Stability

Readers

  • Nuclear and Radiation Engineering.
  • Polymer Science and Engineering.
  • Reinforced Composite Materials