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Accelerated Testing Of Photothermal Degradation Of PolymersElectron-spin-resonance (ESR) spectroscopy and Arrhenius plots used to determine maximum safe temperature for accelerated testing of photothermal degradation of polymers. Aging accelerated by increasing illumination, temperature, or both. Results of aging tests at temperatures higher than those encountered in normal use valid as long as mechanism of degradation same throughout range of temperatures. Transition between different mechanisms at some temperature identified via transition between activation energies, manifesting itself as change in slope of Arrhenius plot at that temperature.
Document ID
19890000454
Document Type
Other - NASA Tech Brief
Authors
Kim, Soon Sam (Caltech)
Liang, Ranty Hing (Caltech)
Tsay, Fun-Dow (Caltech)
Date Acquired
August 14, 2013
Publication Date
September 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 9
ISSN: 0145-319X
Subject Category
MATERIALS
Report/Patent Number
NPO-17454
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.