Degradation of cured polyepoxy under swift heavy ion irradiation
نویسندگان
چکیده
Glass fibre reinforced plastic (GFRP) is considered as structure support and insulating material for the new superconducting FAIR magnets. GFRP (G11) is a composite material consisting of woven glass fibres (volume fraction ~50 %) and cured polymer resin (e.g. amine-cured epoxy). The material will be exposed to cryogenic temperatures, high radiation levels and dynamic mechanical loads (Lorentzian forces during pulsed operation). Long-term reliability under such extreme conditions is an issue of extreme importance. Although epoxy resin exhibits excellent mechanical and electrical properties, it is probably the weakest component of the GFRP composite because of its rather poor radiation hardness. This report investigates radiation damage in polyepoxy foils exposed to ions from the UNILAC (Xe and U ions of 11.1 MeV/u, range ~145 μm, fluence 10 10 – 4×10 11
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