EVALUATION-DEVELOPMENT OF MIL-C-14157B CAPACITORS FOR NUCLEAR RADIATION ENVIRONMENTS
Abstract
The performance is presented of the type CPM08 paper or paper/plastic dielectric capacitor in a combined nuclear-temperature-voltage environment. The principal causes of failure discovered as a result of the environmental test of the standard CPM08 capacitor were: gas evolution and a volume resistivity decrease of the dielectric fluid, embrittlement of the paper and hydrolytic degradation of the Mylar. E-200 capacitors performed exceptionally well in the environmental test with insignificant change in capacitance and dissipation factor. This was also the case for Samica dielectric film capactitors impregnant exhibited the best survival rate; however, changes in capacitance, dissipation factor and insulation resistance in the irradiated group were excessive. Isocyanate treated Mylar units failed very rapidly. It appears that the Mylar was not properly prepared to take advantage of the improved properties of the isocyanate treatment of Mylar. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 21, 1961
- Accession Number
- AD0265046