GRANULOMETRIC COMPOSITION AND SEDIMENTATION STABILITY OF WATER DISPERSION POLYSILOXANE–MINERAL POWDER SYSTEMS
Abstract
Stability of water dispersions of a polyorganosiloxane and TiO2 or mica both in presence of surfactants and without them has been studied at pH 6.7 and 8.7 by nephelometry and granulometry. Aggregate stability of latex-TiO2 system increases with disperse phase concentration, while decreasing for the latex-mica system. Introduction of anionic and nonionic surfactants into mixed dispersions (pH 6.7) leads to increase. Increase of dispersant pH significantly improves dispersancy of powders in the latex without dispersing agent.
About the Authors
I. P. KazhuroBelarus
Ph. D. (Chemistry), Senior Research Associate
V. D. Koshevar
Belarus
D. Sc. (Chemistry), Professor, Head of the Laboratory of Chemistry of Coating and Binding Materials
N. A. Simash
Belarus
Junior Researcher
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