Strengthening of Water Glass Based Aerogel by TEOS
| Autor: | Young Chul Cha, Chul Eui Kim, Hae Jin Hwang |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
geography
geography.geographical_feature_category Materials science Mechanical Engineering Liquid phase Aerogel respiratory system Condensed Matter Physics chemistry.chemical_compound chemistry Mechanics of Materials Mechanical stability General Materials Science Silicic acid Monolith Composite material |
| Zdroj: | Materials Science Forum. :1053-1056 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.544-545.1053 |
| Popis: | In order to prevent the irreversible collapse of the silica aerogel backbone upon the drying of the liquid phase of silica wet gel derived from water glass based silicic acid, we tried to strengthen the aerogel back bone by aging silica wet gels in water and TEOS/ethanol solutions. Although aging of silica wet gels in water has been shown to grow the neck between silica particles of the aerogel backbone, it is hard to obtain a crack-free aerogel monolith. On the other hand, the mechanical stability of silica aerogels was improved significantly by aging the wet gel in TEOS/ethanol solutions with different TEOS content. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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