THERMAL CONDUCTIVITY OF TEFLON, KEL-F, AND DUROID 5600 AT ELEVATED TEMPERATURES
S>The thermal conductivity values of the fluorocarbon plastics, Teflon, Kel-F, and Duroid 5600, were determined at mean specimen temperatures ranglng from approximately 185 deg F to their respective gel-points. Measurements were obtained utilizing a comparative method technique based on unidirectionai steady- state heat-flow theory. The materials under investigation were of commercial quality and were annealed prior to testing to insure dimensional stability. For the range of temperatures within which the materials were investigated, it was found that Teflon consistently exhibited higher values than Kel-F and lower values than Duroid 5600. At 35O deg F deg the thermal conductivities obtained were: Teflon, 2.37 Btu/hr/ft/sup 2// deg F/ in.; Kel-F, 1.72 Btu/hr/ft/sup 2// deg F/in.; and Duroid 5600, 3.58 Btu/hr/ft/sup 2// deg F/in. The thermal conductivities were found to increase with increasing temperatures. (auth)
- Research Organization:
- Watertown Arsenal LAb., Mass.
- NSA Number:
- NSA-12-007126
- OSTI ID:
- 4307348
- Report Number(s):
- WAL-TR-397/10
- Country of Publication:
- United States
- Language:
- English
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