EVALUATION AND DEVELOPMENT OF MIL-C-14157 CAPACITORS FOR NUCLEAR RADIATION ENVIRONMENT. Scientific Report No. 5

Technical Report · Thu Dec 31 23:00:00 EST 1959

OSTI ID:4090700

Pfaff, E R

All capacitor units impregnated with uninhibited FS-5 and silicone gel dielectric impregnant and the capacitors with FC-43 dielectric fluid constituting the gamma group failed in less than 63 hr. Irradiated units with Etherm "A" dielectric fluid and 4% tertiary butyl anthraquinone exhibited a slight improvement in the 75% failure point over the irradiated standard 1% inhibited units. The control group units with additional inhibitor had an appreciable improvement in the 75% failure point over the 1% inhibited units. The 75% failure point of the irradiated cross-linked polystyrene solid impregnant capacitors was reached more rapidly than for the standard units. Post- irradiation tests of the Mylar indicate that it is being damaged by hydrolytic degradation rather than by gamma damage. This type of damage can be improved by isocyanate treatment of the Mylar. Dielectric properties of monoisopropylbiphenyl dielectric fluid have been improved by filtration. Capacitors are being manufactured with isocyanate treated Mylar and this improved dielectric fluid. Samica capacitors for future tests are being procured from the Scintilla Division of Bendix Aviation Corporation. (auth)

• Research Organization: Admiral Corp., Chicago
• NSA Number: NSA-15-005442
• OSTI ID: 4090700
• Report Number(s): NP-9523
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANTHRAQUINONE
BUTYL RADICALS
CAPACITORS
COLLOIDS
CORROSION PROTECTION
CYANATES
DECOMPOSITION
DIELECTRICS
FAILURES
FLUIDS
HYDROLYSIS
IMPREGNATION
INHIBITION
ISOMERS
METALS, CERAMICS, AND OTHER MATERIALS
MICA
MYLAR
PERFORMANCE
POLYESTERS
POLYPHENYLS
POLYSTYRENE
QUINONES
RADIATION EFFECTS
RADIATION PROTECTION
SILICONES
SOLIDS
STANDARDS
STERILIZATION