Dielectric strength of irradiated fiber reinforced plastics
2001; Elsevier BV; Volume: 354; Issue: 1-4 Linguagem: Inglês
10.1016/s0921-4534(01)00039-9
ISSN1873-2143
AutoresK. Humer, H.W. Weber, Ronald Hastik, Hans Hauser, H. Gerstenberg,
Tópico(s)Fusion materials and technologies
ResumoAbstract The insulation system for the toroidal field model coil of international thermonuclear experimental reactor is a fiber reinforced plastic (FRP) laminate, which consists of a combined Kapton/R-glass-fiber reinforcement tape, vacuum-impregnated with an epoxy DGEBA system. Pure disk-shaped laminates, disk-shaped FRP/stainless-steel sandwiches, and conductor insulation prototypes were irradiated at 5 K in a fission reactor up to a fast neutron fluence of 10 22 m −2 ( E >0.1 MeV) to investigate the radiation induced degradation of the dielectric strength of the insulation system. After warm-up to room temperature, swelling, weight loss, and the breakdown strength were measured at 77 K. The sandwich swells by 4% at a fluence of 5×10 21 m −2 and by 9% at 1×10 22 m −2 . The weight loss of the FRP is 2% at 1×10 22 m −2 . The dielectric strength remained unchanged over the whole dose range.
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