Abstract
The elastic moduli of silica gel monolith prepared by the sol-gel method from a tetramethoxysilane solution have been measured before and after heat treatment. The elastic moduli showed a drastic change with heat treatment; for example, Young's modulus changed from 0.95 GPa for the gel before heating to 72.5 GPa for the densified product after heating to 1050 ° C. The change in the Young's modulus of the gel with heating temperature is discussed on the basis of changes of porosity and strength of the silica skeleton.
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Adachi, T., Sakka, S. Dependence of the elastic moduli of porous silica gel prepared by the sol-gel method on heat-treatment. J Mater Sci 25, 4732–4737 (1990). https://doi.org/10.1007/BF01129933
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DOI: https://doi.org/10.1007/BF01129933