Fourier transform infrared spectroscopic study of aging in commercial polyurethane

Satellite electronics systems may function for years before failing due to a shorted-out component. If the insulation is considered to be perfectly inert, then such failures would be inexplicable in terms of events intrinsic to the material. However, modern research, as summarized, for example, in R...

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Published inConference on Electrical Insulation & Dielectric Phenomena - Annual Report 1985 pp. 371 - 376
Main Authors Bretzlaff, R. S., Zacharius, S. L., Sandlin, S. L., Cagle, G. A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.1985
Subjects
Aging
Chemicals
Dielectrics
Electric breakdown
Electrodes
Insulation
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Summary:Satellite electronics systems may function for years before failing due to a shorted-out component. If the insulation is considered to be perfectly inert, then such failures would be inexplicable in terms of events intrinsic to the material. However, modern research, as summarized, for example, in Ref. [1], has identified many physical and chemical changes which may occur in the dielectric before breakdown. Hence, a polymer dielectric is not inert and may be more accurately thought of as a seething molecular and electronic cauldron, which gradually drifts in the direction of diminished resistance to applied electrical stress. After a time, which appears indefinite only as long as we have not adequately characterized the system, the constant electrical stress shorts out the degraded insulation.
ISBN:1509031464
9781509031467
DOI:10.1109/CEIDP.1985.7728295