Aging of Polymers and Composites.
Abstract
The microchemical changes produced during the aging of the resin system, MY720 (Ciba-Geigy) cured with Eporal (Ciba-Geigy), were studied by the combined use of chemiluminescence, vaporization gas chromatography (and mass spectrometry), precision abrasion mass spectrometry, and stress mass spectrometry. Resin coupons were aged at ambient, 85 C and 150 C in dry and moist atmospheres in the presence and absence of an external tensile stress (up to 50% of the ultimate tensile stress). The chemiluminescence peak intensity which occurs at a temperature change was found to be an inverse function of the aging time for a given set of environmental parameters. Propenal, a low-temperature decomposition product of the resin, may be related to the chemiluminescence and aging processes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 21, 1981
- Accession Number
- ADA111625
Entities
People
- C. J. Wolf
- D. L. Fanter
- M. A. Grayson