3425 低地球軌道に曝露されたPEEK膜材の強度特性(S89-2 微小重力・宇宙環境利用(2),S89 微小重力・宇宙環境利用)

概要

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PEEK (Poly-ether-ether-keton) sheets with 0.4mm thickness were exposed to the real space environment for 315 days by using the International Space Station (ISS). Surface observations, mass measurements, and monotonic tensile tests were carried out to investigate the degradation after space exposure. As a result, the sample showed: (a) color change into dark brown, (b) thickness reduction, and (c) decrease of elongation at break. By comparison with results obtained by the ground control tests which irradiated atomic oxygen (AO), ultraviolet ray (UV), and electron beam (EB) to the same kind of PEEK samples, it was clarified that (a) and (c) were caused by UV in the ISS orbit, and that (b) was by AO.
社団法人日本機械学会の論文
2005-09-18