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A Comparison Between the Densification Kinetics of Colloidal and Polymeric Silica Gels

Published online by Cambridge University Press:  15 February 2011

C. J. Brinker ,
W. D. Drotning  and
G. W. Scherer
C. J. Brinker
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185
W. D. Drotning
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, New Mexico 87185
G. W. Scherer
Affiliation:
Corning Glass Works, Corning, New York
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Abstract

Silica gels were prepared by three methods in which the original silicate species varied from extended linear or randomly branched polymers to more highly crosslinked clusters to colloidal particles of anhydrous silica. During isothermal sintering experiments, the viscosities of the two polymer gels increased significantly (up to 3 orders of magnitude) while the isothermal viscosity of the colloidal gel was constant. Viscosity increases were explained by crosslinking and structural relaxation of the polymeric gels.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 32: Symposium B – Better Ceramics Through Chemistry I , 1984 , 25
Copyright
Copyright © Materials Research Society 1984

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References

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