Chapter 4. Rheology of a Low-Plastic Ceramic Body Containing Na-Bentonite

  1. John B. Wachtman Jr.
  1. N. M. Fernanda Andreola,
  2. T. Manfredini,
  3. G. C. Pellacani,
  4. P. Pozzi and
  5. M. Romagnoli

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314050.ch4

A Collection of Papers Presented at the 94th Annual Meeting and the 1992 Fall Meeting of the Materials & Equipment/Whitewares Manufacturing: Ceramic Engineering and Science Proceedings, Volume 14, Issue 1/2

A Collection of Papers Presented at the 94th Annual Meeting and the 1992 Fall Meeting of the Materials & Equipment/Whitewares Manufacturing: Ceramic Engineering and Science Proceedings, Volume 14, Issue 1/2

How to Cite

Andreola, N. M. F., Manfredini, T., Pellacani, G. C., Pozzi, P. and Romagnoli, M. (2008) Rheology of a Low-Plastic Ceramic Body Containing Na-Bentonite, in A Collection of Papers Presented at the 94th Annual Meeting and the 1992 Fall Meeting of the Materials & Equipment/Whitewares Manufacturing: Ceramic Engineering and Science Proceedings, Volume 14, Issue 1/2 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314050.ch4

Author Information

  1. Department of Chemistry University of Modena 41100 Modena Italy

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375235

Online ISBN: 9780470314050

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Keywords:

  • low piastic body;
  • thixotropy;
  • physicochemical properties;
  • rheological characteristics;
  • na/Ca bentonite.

Summary

This paper reports the results of a study on the rheological behavior of slips prepared using a low-plastic body with 0-4 wt% of alkali-activated bentonite added as strengthening agent. The presence of bentonite increases the plasticity of the slips and their viscosity and thixotropy, and addition of bentonite to about 2 wt% does not greatly affect the rheological conditions that regulate the industrial steps. Higher percentages of bentonite strongly modify the rheology of the slips, and in order for them to be workable, it is necessary to reduce the solid content and/or amounts of deflocculant greater than 0.5 wt%.