RHEOLOGICAL PREDICTIONS OF DISPERSION OF POWDER IN CERAMIC INJECTION MOLDING MIXTURES

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著者

    • OKADA Kenji
    • Department of Applied Chemistry, Okayama University of Science
    • AKASAKA Shin
    • Department of Applied Chemistry, Okayama University of Science

抄録

The process variables of mixing to improve the dispersion of powder in ceramic injection molding mixtures were examined for mixtures consisting of polyethylene and different kinds of ceramic powders. The dispersion in the mixtures mixed under various conditions was evaluated using the dynamic rheological measurements of the mixtures. The degree of dispersion in the mixtures was highly influenced by the mixing temperature and mixing speed of the mixer. With increasing mixing temperature the viscosity of the mixtures increased, and the degree of dispersion in the mixtures reduced as the particle size became smaller. On the other hands, dispersion in the mixtures was improved with decreasing mixing temperature. This improvement in the dispersion resulted from the increase in the mixing strength of the mixer to break down agglomerates with increasing viscosity of the matrix. Increasing the mixing speed was also a processing parameters that improved the dispersion of powder in the mixtures. Furthermore, a simple rheological model was proposed to evaluate the mixing strength of the mixer to disperse the particles as a function of particle size and particle concentration.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 28(2), 137-143, 1995-04 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10002133287
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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