Soil-gel applications
Sol-gel polymerization process

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Soil-gel applications


Sol-gel polymerization process

Authors : Pierre AUDEBERT, Fabien MIOMANDRE

Publication date: December 10, 2005, Review date: February 1, 2016 | Lire en français

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5. Soil-gel applications

There are many applications for sol-gel materials, and we'll confine ourselves here to the main examples. As sol-gel chemistry is a "soft" method of glass production, the main application is for the production of thin glass layers of various compositions [29][43] . In conventional glass synthesis, the precursors have to be melted, and in order to achieve good homogeneity of the mixtures, temperatures of up to 1,400 ˚C are frequently required. With the sol-gel process, due to the fact that mixing is already achieved on a molecular scale, temperatures in the range of 600 to 900 ˚C are sufficient, thus saving energy. In addition, uniform deposits can be achieved without melting. High-index glasses can thus be prepared from mixtures of silicon alkoxides and titanium or zirconium...

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