MECHANICAL BEHAVIOR OF RAW RUBBER IN MOONEY VISCOMETER

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  • Ninomiya K.
    Yokkaichi Copolymer Plant, Japan Synthetic Rubber Co. Ltd.
  • Miyakoda H.
    Yokkaichi Copolymer Plant, Japan Synthetic Rubber Co. Ltd.
  • Maekawa E.
    Yokkaichi Copolymer Plant, Japan Synthetic Rubber Co. Ltd.
  • Ido S.
    Yokkaichi Copolymer Plant, Japan Synthetic Rubber Co. Ltd.

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Other Title
  • ムーニー指度の分子量依存性
  • ムーニー シド ノ ブンシリョウ イソンセイ
  • PART II. MOLECULAR WEIGHT DEPENDENCE OF MECHANICAL DATA

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Abstract

Molecular weight dependence of mechanical data obtained by using a Mooney Viscometer at a fixed temperature of 100°C was investigated for SBR samples having molecular weights ranging from 1×105 to 8×105.<br>The following empirical equations were obtained for the time independent constants involved in Eqs. (1), (2) and (3) in the text:<br>ML0=ζ0[1-(ξ0/Mv)], <br>τ=φMv3.4, <br>XL=ζ∞[1-(ζ∞/Mv)], <br>YL≡ML∞-XL=σMv, <br>AL∞=δ(Mv-ξ).<br>Here Mv represents the viscosity average molecular weight of the sample and ζ0, ξ0, φ, ζ∞, ξ∞, σ, δ and ξ are the constants independent of molecular weight. The values of ξ0, ξ∞ and ξ were found to be approximately the same (9×104g/mol).

Journal

  • NIPPON GOMU KYOKAISHI

    NIPPON GOMU KYOKAISHI 35 (2), 99-104, 1962

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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