Variation of the States of Rubber

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  • ゴムの状態変化
  • 特論講座 ゴムの状態変化(第6回)タイヤの部材の市場老化と耐久性
  • トクロン コウザ ゴム ノ ジョウタイ ヘンカ(ダイ6カイ)タイヤ ノ ブザイ ノ シジョウ ロウカ ト タイキュウセイ
  • 第6回　タイヤの部材の市場老化と耐久性
  • 6. Field Aging of Tire Parts and Durability

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Abstract

<p>Belt separation, the final stage of belt edge crack growth, is discussed to illustrate the influence of tire aging to durability. The resistance to crack propagation of aged rubbers correlates well with extension ratio at break λb, which is considered to represent the extent of crosslinking due to oxidative aging. Resistance to crack propagation falls with decreasing λb, i. e., with crosslinking during aging. Consequently, aging of tire causes deterioration of resistance to belt separation. <br/>Reduced oxygen permeation through tire wall, by means of nitrogen inflation and use of halogenated butyl rubber for inner liner, leads to better durability. It is also found that lower temperature mixing leads to better aging resistance and tire durability.</p>

Journal

  • NIPPON GOMU KYOKAISHI

    NIPPON GOMU KYOKAISHI 90 (2), 41-46, 2017

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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