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Sol-gel process for providing a tailored gel microstructure
Sol-gel process for providing a tailored gel microstructure
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机译:溶胶-凝胶工艺可提供量身定制的凝胶微结构
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摘要
An improved sol-gel process for fabricating large, crack-free gel monoliths (e.g., of silica) is described in which a specially- tailored gel microstructure is provided by adjusting the relative concentrations of an alcohol diluent (e.g., ethanol) and/or one or more catalysts (e.g., HCl and HF). Controlled variations in the gel's average pore radius, bulk density, rupture modulus, and elastic modulus over a wide range can be tailored in this fashion. This enables the process to be optimized for the particular application involved.
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