OS0611 直接フッ素化処理における高分子材料の遅れ破壊挙動(先進複合材料の強度・特性評価,オーガナイズドセッション)

概要

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The objective of this study is to investigate the effect of tensile stress on polymer materials in gaseous fluorine atmosphere. In this study, Poly-Ether-Ether-Ketone (PEEK) 0.4mm thin films were used. Tensile stress was given by tensile jig, which can apply various stresses to specimens. Direct fluorination was carried out by Takamatsu Teisan Co., Ltd. Fracture surface was observed by Scanning Electron Microscope (SEM). As a result, specimens were fractured during this treatment. Moreover, lower applied stress brought longer time to fracture. This trend is typical delayed fracture. Fracture surface clearly showed the existence of fracture origin. The analysis of Electron Dispersive X-ray Spectroscopy (EDS) demonstrated the fracture origin was caused by gaseous fluorine. The use of stress intensity factor evaluates quantitatively whether the delayed fracture would be occurred or not.
2009-07-24