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Mechanical and Electrical Properties of Candidate Organic Insulators After Neutron Irradiation at 4 K

Dennis S. Tucker, John D. Fowler, Jr., Frank W. Clinard, Jr.

Fusion Science and Technology

Volume 8 / Number 3 / November 1985 / Pages 2696-2703


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Several epoxy- and polyimide-based fiber-reinforced materials were irradiated to neutron fluences of 4.1 × 1021 n/m2, E > 0.1 MeVat 4.2 K. Postirradiation testing of mechanical and electrical properties was performed at 77 and 300 K. Mechanical strength was observed to decrease for the epoxy-based materials while the polyimide-based materials showed essentially no change in strength. Electrical properties revealed little or no pattern of degradation at all levels of radiation exposure.

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