The Influence of Non-Newtonian Property on the Apparent Viscosity Measured by Single Cylinder Rotational Viscometer (Type-B Viscometer)

  • Asai Kazuki
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
  • Ichiyanagi Masaaki
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
  • Satone Hiroshi
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
  • Mori Takamasa
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
  • Tsubaki JunIchiro
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
  • Itoh Yoko
    DAITO CACAO CO.

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Other Title
  • 非ニュートン性が単一円筒型粘度計(B型粘度計)の測定結果に及ぼす影響について
  • ヒニュートンセイ ガ タンイツ エントウケイ ネンドケイ Bガタ ネンドケイ ノ ソクテイ ケッカ ニ オヨボス エイキョウ ニ ツイテ

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The measured values of apparent viscosity of non-Newtonian fluids were discussed. Alumina slurries, CMC solutions and chocolates were used as non-Newtonian fluids, and their apparent viscosities were measured by a single cylinder rotational viscometer (B-type viscometer) and coaxial cylinder rotational viscometer (coaxial viscometer). The measured values by the B-type viscometer were larger than those by the coaxial viscometer in every sample, and the flow curves measured by the coaxial viscometer were well fitted by the power law model. The ratio of the apparent viscosities measured by both viscometers was correlated with the exponent in the power law model. Instead of the exponent, a new index defined by the measurement values of the B-type viscometer was proposed in order to estimate the true values measured by the coaxial viscometer. The ratio of the apparent viscosities could be correlated with the new index as well as the exponent. It has been revealed that the true apparent viscosity can be roughly estimated by the B-type viscometer by using the new index.

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