せん断流動場反応制御技術によるゴムの連続再生　第８報　　過酸化物架橋ＥＰＤＭの再生条件と加硫再生ゴム物性

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  • Continuous Devulcanization by Shear Flow Stage Reaction Control Technology for Rubber Recycling. Part 8. Devulcanization Condition for Peroxide-Crosslinked EPDM and Mechanical Properties of Sulfur-Crosslinked Reclaimed Rubber.
  • センダン リュウドウバ ハンノウ セイギョ ギジュツ ニ ヨル ゴム ノ レンゾク サイセイ ダイ8ホウ カサンカブツ カキョウ EPDM ノ サイセイ ジョウケン ト カリュウサイセイ ゴム ブッセイ
  • Devulcanization Condition for Peroxide-Crosslinked EPDM and Mechanical Properties of Sulfur-Crosslinked Reclaimed Rubber

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Continuous devulcanization by the shear flow stage reaction control technology for vulcanized rubbers has been developed. This technology has been applied to sulfur-crosslinked rubbers such as EPDM, NR/SBR (used tire waste) and IIR (used for tube). In this study, this technology has also been applied to peroxide-crosslinked EPDM. The obtained reclaimed rubber was found to be a mixture of two components; one is a linear chain which is soluble in toluene and whose average molecular weight is one third of that of the original raw rubber, and the other is a very loosely crosslinking network whose effective network chain density is about one fiftieth of that of the peroxide-crosslinked virgin rubber. The ratio of linear chain component and loosely crosslinking network component was approximately 3 to 2. The reclaimed rubber can be cured with sulfur- accelerator curing system. The sulfur-crosslinked reclaimed rubber shows good mechanical properties nearly equal to those of sulfur-crosslinked virgin one.

収録刊行物

  • 日本ゴム協会誌

    日本ゴム協会誌 73 (11), 612-616, 2000

    一般社団法人 日本ゴム協会

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