Parametric Study For The Preparation Of Inorganic-Organic Composite Films
| Autor: | Yun-Sheng Chang, 張運昇 |
|---|---|
| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 Inorganic-organic hybrid material prepared with sol-gel process. This study focus on 3-glycidyloxy propyl trimethoxy silane(GLYMO) and Aluminum tri sec butylate (ATSB), result in cured films of differences hardness of by varying (1) Si-to-Al molar ratio (2), hydrolysis time, and analyses of the cured samples were performed to obtain results such as FTIR and UV visible spectroscopy. The coating formulations with cured films exhibit characteristics including varying hardness, a deflection reaching 5cm in diameter, and a transmittance reaching 87%. Particularly, the Si-to-Al molar ratio appears to have dramatic influence on the hardness of the cured films. Hydrolysis rate is another important factor for cases with GLYMO:ATSB molar ratio being 2.5:1 and 3.5:1. Film hardness is shown increases with increasing hydrolysis time. Baseline-corrected and normalized FTIR-ATR absorption peaks show an increasing trend of the Si-O-Al peak with hydrolysis time for these two cases. A molar ratio too high or too low result films with low hardness. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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