Simulation on Oxidation Process of Ethylene-Propylene-Diene Copolymer

カテゴリ: 全国大会

論文No: 2-053

グループ名: 【全国大会】平成27年電気学会全国大会論文集

発行日: 2015/03/05

タイトル(英語): Simulation on Oxidation Process of Ethylene-Propylene-Diene Copolymer

著者名: 大木 義路(Waseda University),Daomin Min(Xi’an Jiaotong University)

著者名(英語): Yoshimichi Ohki(Waseda University),Daomin Min(Xi'an Jiaotong University)

キーワード: エチレンプロピレン共重合体|ガンマ線照射|気体拡散|酸化反応|シミュレーション

要約(日本語): A kinetic model that combines gamma irradiation, chemical reactions, gas diffusion, and molecular scission is developed to investigate the oxidation process of ethylene-propylene-diene (EPDM) copolymer. The chemical reactions such as free radical generation, oxidation, and recombination in the model are solved by an implicit scheme. The diffusion equations of gaeous oxygen, hydrogen, and methane are numerically solved by a stable and highly accurate method. The time dependent concentrations of free radicals, oxidation products, and gases as a function of position in EPDM are obtained from the simulation. The results show that the degradation of EPDM is limited by oxygen diffusion. In addition, the degradation is severer near the surface than inside, which is consistent with an experimental result on the surface hardness of EPDM observed by scanning probe microscopy.

原稿種別: 英語

PDFファイルサイズ: 367 Kバイト