Irradiation performance of polytetrafluoroethylene (Teflon ®) in a mixed fast neutron and gamma radiation field

Samples of polytetrafluoroethylene have been irradiated with a mixed field of fast neutrons and gamma rays using the MIT Research Reactor. Dose levels from ∼0.3 to ∼50×10 6 Gy for gamma and from ∼0.13 to 80×10 4 Gy for fast neutrons were used. Weight loss, fluorine loss, and swelling were measured q...

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Bibliographic Details
Published in:Journal of nuclear materials 2002-07, Vol.304 (1), p.83-85
Main Authors: Harling, Otto K, Kohse, Gordon E, Riley, Kent J
Format: Article
Language:English
Subjects:
Applied sciences
Crosslinking and degradation
Exact sciences and technology
Physicochemistry of polymers
Polymers and radiations
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Summary:Samples of polytetrafluoroethylene have been irradiated with a mixed field of fast neutrons and gamma rays using the MIT Research Reactor. Dose levels from ∼0.3 to ∼50×10 6 Gy for gamma and from ∼0.13 to 80×10 4 Gy for fast neutrons were used. Weight loss, fluorine loss, and swelling were measured quantitatively. Subjective mechanical property tests were also performed to assess embrittlement. Aside from high levels of embrittlement, no large changes, ≳1.5%, were observed in the properties which were assayed even at the highest doses.
ISSN:0022-3115
1873-4820
DOI:10.1016/S0022-3115(02)00849-8