書誌事項
- タイトル別名
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- The Degradation Mechanism of EPDM Packing by Chlorine in City Water (II)
- 水道水残留塩素に侵されるEPDMパッキンの劣化メカニズム(2)
- スイドウスイ ザンリュウ エンソ ニ オカサレル EPDM パッキン ノ レッカ メカニズム 2
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説明
In order to elucidate the degradation mechanism of EPDM caused by a amount of chlorine in city water, EPDM used for about 3 years at 45-65°C in the water tank in Osaka City and the unused product were analyzed. The carbon black contained in them was FEF (Fast Extruded Furnace) which particle size is comparatively small. Their morphology changes were observed by SEM. The effect of the diffusion of chlorine was examined by EPMA. The degradation mechanism was studied by FT-IR and 13C-NMR. As a result of FT-IR measurement, absorption of C=O bond (1720cm-1) and C=C bond (1640cm-1) were detected from the used product. As a result of 13C-NMR measurement, in the used product, the peak of methyl group of main chain increased in comparison with the unused product. It was thought that generation of the C=O bond by the oxidation reaction caused the β-scission of the main chain to produce the C=C bond and the methyl group in the used product. Therefore, as the crosslinking density lowered, the used EPDM became brittle and collapsed.
収録刊行物
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- 日本ゴム協会誌
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日本ゴム協会誌 76 (1), 9-12, 2003
一般社団法人 日本ゴム協会
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詳細情報 詳細情報について
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- CRID
- 1390282681538712576
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- NII論文ID
- 10010470113
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- NII書誌ID
- AN00189720
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- ISSN
- 18840442
- 0029022X
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- NDL書誌ID
- 6431279
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
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- 抄録ライセンスフラグ
- 使用不可
