GENERAL EFFECTS OF HEAT EXPOSURE:

Samples of polyester, Fiberglass, nylon, acrylic fibers, and PTFE were exposed in dry air. Breaking strengths were determined at 70°F. (22°C.), 65% R.H. before and after exposure.

  • Exposures within this range:
  • Partially deteriorated Fiberglass
  • Completely deteriorated other fibers tested
  • Exposures within this range:
  • Resulted in progressive loss of breaking strength for Fiberglass and PTFE
  • Completely deteriorated other fibers tested
  • Exposures within this range:
  • Had little or no effect on the breaking strength of Fiberglass and PTFE
  • Resulted in progressive loss of breaking strength for polyester, nylon, and acrylic fibers
  • Exposures within this range:
  • Had little or no effect on the breaking strength on any of the fibers tested