Electron-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.
Accelerated Testing Of Photothermal Degradation Of Polymers
NASA Tech Briefs ; 13 , 9
01.09.1989
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Englisch
Evaluation method for accelerated degradation testing with interval analysis
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