INFLUENCE OF FORMATION PARAMETERS ON THE MECHANICAL PROPERTIES OF WET GELS.

S. A. Pardenek, J. W. Fleming, L. C. Klein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

The mechanical behavior of wet silica gels formed by various sol-gel processes has been studied. Samples were analyzed with a beam-bending apparatus specifically designed for accurate measurements of very low strength solids. Breaking strength, viscosity and relaxation measurements were made on gelled bodies. Specimens were studied in an undried gel state, molded in shapes suitable for the particular experiments. Tests were made in several ambient conditions including immersion in a liquid bath. The mechanical properties of gels are dependent upon the gel composition, gel age and other formation parameters such as pH, temperature and pressure. An understanding of these properties is particularly important in determining the nature of subsequent processing steps. Models for the structures of the various gels are proposed which explain variation in mechanical behavior.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsSusanne R. Nagel, James W. Fleming, George H. Sigel, David A. Thompson
PublisherMaterials Research Soc
Pages73-84
Number of pages12
ISBN (Print)0931837537
StatePublished - 1987
Externally publishedYes

Publication series

NameMaterials Research Society Symposia Proceedings
Volume88

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)

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