Changes in the properties of polymer films when exposed to typical transformer environments

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5949702

McCoy, Jr, H E; Brinkman, C R

Polymer films are being considered for several insulator applications where they will operate at temperatures above ambient. Test equipment was developed for exposing polymer samples under stress to SF/sub 6/ containing various amounts of water and Freon 113. Samples of polyethylene terephthalate, polycarbonate, polyethersulfone, polyparabanic acid, and polyimide were exposed at temperatures from 70 to 160/sup 0/C for 2000 h and were evaluated by visual examination, tensile tests, metallographic examination, and electrical breakdown tests. It was found that the properties of polycarbonate and polyethylene terephthalate degraded considerably due to exposure, the mechanical properties of polyethersulfone and polyparabanic acid changed some, and the properties of polyimide were unaffected.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5949702
• Report Number(s): CONF-810913-9; ON: DE81030919
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
36 MATERIALS SCIENCE
360400 -- Polymers & Plastics-- (-1987)
BREAKDOWN
DATA
DIELECTRIC MATERIALS
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
FREONS
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PERFORMANCE
PHYSICAL PROPERTIES
POLYMERS
POWER SYSTEMS
SULFUR COMPOUNDS
SULFUR FLUORIDES
TEMPERATURE DEPENDENCE
TRANSFORMERS