Deflocculation and Gelation of Porcelain Ceramics

Authors: T. Tonthai

Abstract:

Deflocculation and gel characterization were investigated for three different composition of porcelain slips at specific gravity 1.8. The suspensions were dispersed with sodium silicate (Na2SiO3) in under-deflocculated slips and fully deflocculated slips. The rheology characterization of slips was conducted by the deflocculation curves and the gel curves. The results showed that decreasing the amount of the ball clay composition in the slips consumed less dosages of the dispersants. The under-deflocculated slips tended to have a gelation rate faster than the fully deflocculated slips.

Keywords: Ceramics, Deflocculation, Gelation, Porcelain

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1083055

References:

[1] K.H. Schuller, "Porcelain," in Ceramic Monograghs-Handbook of Ceramics, Verlag Shmid gmbH Freiburg, 1979.
[2] R.A. McCauley, "Rheology," in Ceramic Monograghs-Handbook of Ceramics, Verlag Shmid gmbH Freiburg, 1983.
[3] J.M. Keller, Rheology and Slip Casting of Fine Alumina Systems, Ph.D. thesis, Rutgers University, NJ, 1995.
[4] Emel Ozel, Nuran Ay, and Ersan Putun, "Effect of electrolytes on sanitaryware slip," The American Ceramic Society Bulletin, vol. 78, no. 5, pp. 73-75, May 1999.
[5] F. Singer and S.S. Singer, Industrial Ceramics. Chapman and Hall, London, 1963.
[6] M.N. Rahaman, Ceramic Processing and Sintering. Marcel Decker, New York, 1988.
[7] W.E. Worrall, "The colloid chemistry of clays and ceramic materials," in Ceramic Monograghs-Handbook of Ceramics, Verlag Shmid gmbH Freiburg, 1982.
[8] D.J. Shaw, Colloid and Surface Chemistry. Butterworth-Heinemann Ltd, Oxford, 1992.
[9] Terence Cosgrove, Colloid Science : Principles, Methods and Applications. 2nd ed., John Wiley & Sons Ltd, Great Britain, 2010.
[10] R.J. Hunter, Introduction to Modern Colloid Science. Oxford University Press, Oxford, 1993.
[11] G. Schramm, Introduction to Practical Viscometry. Gebruder HAAKE, Dieselstrsse, Germany, 1981.
[12] E.P. Oaikhinan, "Rheological properties of certain Nigerian clays," Interceram, vol. 40, no. 1, 1991.
[13] G.W. Phelps, "Reformulation of whiteware bodies," The American Ceramic Society Bulletin, vol. 55, no. 5, pp. 528-532, 1976.
[14] T. Sugiyama, T. Hariuchi, M. Tomizaki, and H. Takashima, "Study on high-silica porcelain bodies," Interceram, vol. 44, no. 3, 1995.
[15] J.M. Keller, R.R. Ulbrich, and R.A. Haber, "Rheological characterization of slips," The American Ceramic Society Bulletin, vol. 76, no. 3, pp. 87-88, 1997.