軸径の大きなゴム混練機のカーボンブラック分散について Effects of Large Rotor Shaft on Carbon Black Incorporation and Dispersion in Rubber Mixing

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Styrene-butadiene rubber (SBR) was mixed with carbon black (CB), zinc oxide, etc. using 10L and 75L conventional kneaders equipped with conventional rotor, and 7L and 55L novel kneaders with new type rotor. The new type rotor used in this study has a large rotating shaft in comparison with the conventional type rotor. These rotors were installed in the same vessels, respectively. Under various rotating speeds and shear rates in the tip, Mooney viscosities and volume resistivities of SBR compounds were measured at arbitrary rotor revolutions. By using the new type rotor, it is thought that mixing will proceed not only in the tip region called the high shear region, but also in the annulus called the low shear region.<br>Mooney viscosities of compounds obtained by 55L kneader were lower than that by 75L kneader. Volume resistivities of compounds obtained by novel kneaders were higher than those by conventional kneaders.<br>At the initial stage of mixing in the novel kneader, it is supposed that most of CB was incorporated into SBR in the annulus to form the loose agglomerates of CB in rubber. This may be due to the low shear rate. Then the agglomerates will be collapsed to the fine aggregates of CB in rubber through subsequent mixing.

収録刊行物

  • 日本ゴム協會誌  

    日本ゴム協會誌 79(11), 516-520, 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)
    10018108715
  • 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
    8575906
  • 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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