Titania-based polymeric sol for enhanced robustness in self-cleaning surfaces.
Robust self-cleaning glass in this project is achieved by coating a titania-based polymeric sol on the glass surface and subsequently calcined at 500oC. A thin solid transparent film with good robustness 5B (based on ASTM 339D Elcometer scratch test) was acquired. The robust coating was achieved by...
Saved in:
| 主要作者: | |
|---|---|
| 其他作者: | |
| 格式: | Final Year Project |
| 語言: | English |
| 出版: |
2009
|
| 主題: | |
| 在線閱讀: | http://hdl.handle.net/10356/16471 |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | Robust self-cleaning glass in this project is achieved by coating a titania-based polymeric sol on the glass surface and subsequently calcined at 500oC. A thin solid transparent film with good robustness 5B (based on ASTM 339D Elcometer scratch test) was acquired. The robust coating was achieved by using two organic modifiers, namely acetyl acetone and 3-glyciodoxypropyl-trimethoxysilane (GPTMS). Results show that addition of acetyl acetone to the polymeric sol aided in achieving superhydrophilicity but affected the robustness of coating; while addition of GPTMS helped to enhance robustness but compromised photocatalytic activity. Based on experimental results, an optimal ratio of 1.5 mole ratio for GPTMS with respect to 200 moles of titania and 80 mole ratio of acetyl acetone with respect to 1 mole of Imidazole were obtained for optimal combination of photocatalytic activity, hydrophilicity, coating robustness and coating transparency. |
|---|