Accession Number:

ADA220822

Title:

Oxidative Degradation of Acetylene Terminated Sulfone (ATS) Resin

Descriptive Note:

Final rept. Jan 1981-Jun 1983

Corporate Author:

AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH

Report Date:

1990-01-10

Pagination or Media Count:

93.0

Abstract:

Acetylene terminated sulfone resin ATS, hereafter designated as ATS-G, and components of that resin mixture isolated by column chromatography, were exposed to elevated temperatures in the presence of oxygen to determine and compare oxidative stabilities. Degradation in the presence of an unlimited supply of oxygen was simulated by programmed thermogravimetry, and under partially anaerobic conditions. It was found by thermogravimetry TGA that although oxygen does not appear to be incorporated to any measurable extent into ATS polymers cured in air, those polymers became slightly less resistant to high temperature oxidative degradation than their counterparts cured under nitrogen. In other experiments, it was shown that direct attack of oxygen on ATS resins, at least under the conditions of the TGA experiment, takes place only after completion of those thermal degradation reactions producing oligomeric and condensable volatile products of degradation. In other words, the stability of those resins to oxidation under the accelerative conditions of the TGA experiment is proportional to their thermal stability.

Subject Categories:

  • Polymer Chemistry
  • Laminates and Composite Materials
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE