非一様熱劣化架橋ポリエチレンシートの引張り強度変化

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/10/01

タイトル(英語): Change of Tensile Strength due to Non-uniform Thermal Deterioration of XLPE Sheets

著者名: 栗原　隆史（(財) 電力中央研究所 電力技術研究所），高橋　俊裕（(財) 電力中央研究所 電力技術研究所），本間　宏也（(財) 電力中央研究所 電力技術研究所），岡本　達希（(財) 電力中央研究所 電力技術研究所）

著者名(英語): Takashi Kurihara (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Toshihiro Takahashi (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Hiroya Homma (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Tatsuki Okamoto (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI))

キーワード: 原子力発電所，架橋ポリエチレン，熱劣化，酸化，顕微FT-IR，引張り強度　　nuclear power plants，XLPE，thermal deterioration，oxidation，micro FT-IR，tensile strength

要約(英語): Cross-linked polyethylene (XLPE) sheets were thermally deteriorated in atmospheric air at 180℃ for at most 100 hours, and their depth profiles of the oxidation degrees were investigated with a micro FT-IR, and the relationships between the oxidation degree and mechanical properties such as tensile strength and elongation at break were examined. The oxidation degree was defined as the ratio of the IR absorption peak for the C=O bond to that for the C-H bond. When tensile strength and elongation at break of XLPE sheets decreased, the oxidation degree increased and the oxidation degree distributed non-uniformly with depth. That is, the oxidation degree was the largest on the upper surface of XLPE sheets where air supply was sufficient during heating, and it was the smallest on the lower surface that contacted with a metal plate during heating. Since the mechanical characteristics such as the hardness and the Young's modulus decreased in the oxidized region of XLPE sheets, it was pointed out that the oxidized region became a weak point against the mechanical stress. It was also pointed out that the micro FT-IR was useful in evaluating the depth profile of oxidation in polymer materials.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.10 （2011） 特集：液体中の放電と基礎現象および液体応用技術

本誌掲載ページ: 878-883 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/10/131_10_878/_article/-char/ja/