新脱硫技術の提出 PRESENTATION OF NEW DEVULCANIZATION PROCESS

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Continuous devulcanization by shear flow stage reaction control technology for vulcanized rubber has been developed. Screw geometry and alignment, screw rotation, reaction temperature, internal pressure, and addition of process oil and devulcanizing agent are the most important factors for this process. This process can be applied to sulfur vulcanized rubbers such as EPDM, NR, SBR and IIR. This paper described the results of the devulcanization of EPDM rubber. The obtained devulcanized rubber was found to be even mixture of two components; one is linear chain which is soluble in toluene and whose average molecular weight is nearly equal to that of the original raw rubber, and the other is very loosely crosslinking network whose effective network chain density is about one twentieth of that of the virgin vulcanized rubber. The devulcanized rubber can be revulcanized by conventional curing process with sulfur-accelerator vulcanizing system. The revulcanized rubber exhibited excellent mechanical properties and formability nearly equal to virgin vulcanized one.

収録刊行物

  • 日本ゴム協會誌  

    日本ゴム協會誌 72(1), 43-49, 1999-01-15 

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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各種コード

  • NII論文ID(NAID)
    10002117989
  • NII書誌ID(NCID)
    AN00189720
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0029022X
  • NDL 記事登録ID
    1523850
  • 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  CJP引用  NDL  J-STAGE 
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