エラストマー製品の劣化とトラブルと対策 : 地球環境悪化による残留塩素水劣化, 金属劣化およびオゾン劣化 Degradation and Trouble Countermeasure of Vulcanized Rubber Products : Degradation by Residual Chlorine in City Water and Copper-induced Degradation and Ozone Degradation by Influence of Environmental Deterioration in the Earth

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The degradation behavior of EPDM by chlorine in water was reviewed. In the low concentration chlorine water such as city water, the degradation process was expected to be a lowering of EPDM molecular weight causing the softening. In the case of high chlorine concentration, on the other hand, reaction with chlorine increased the cross-linking density leading to hardening of EPDM. In addition, metal ion such as copper ion accelerates the chlorine degradation of EPDM.<br>The ozone concentration in the near ground atmosphere gradually increasing in recent 20 years because of the increasing nitrogen oxides exhausted from automobile and the strong short-wave UV light. We should consider measures against the ozone degradation of the rubber products at once.

収録刊行物

  • 日本ゴム協會誌  

    日本ゴム協會誌 79(11), 529-536, 2006-11-15 

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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各種コード

  • NII論文ID(NAID)
    10018108749
  • NII書誌ID(NCID)
    AN00189720
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    0029022X
  • NDL 記事登録ID
    8575930
  • NDL 雑誌分類
    ZP17(科学技術--化学・化学工業--高分子化学・高分子化学工業--ゴム・プラスチックス)
  • NDL 請求記号
    Z17-125
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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