Convenient Preparation of Superhhydrophobic Ormosil Powder
- DOI
- 10.2991/icaees-15.2015.289How to use a DOI?
- Keywords
- superhydrophobic; ormosil; polymethylsilsesquioxane; powder; silica
- Abstract
Methyltrimethoxysilane (MTMS) was used as the precursor to prepare organically modified silica (ormosil) aerogel powder. The preparation was done in two steps. In the first step, MTMS was transformed into a gel through crosslinking by a small amount of sodium silicate, and the gel was broken into small pieces by strong shearing. In the second step, additional MTMS that was prehydrolyzed by acid catalyzed hydrolysis was added to the former gel dispersion, then ammonium hydroxide was added to make the pH to be about 11. An instant precipitation of white solid was observed after ammonium hydroxide addition. Superhydrophobic ormosil powder was obtained after ambient pressure drying of the precipitated solid. Scanning electron microscopy(SEM) observation shows that the obtained powder was of porous structure resembling aerogel.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Baiyu Li AU - Xiaogang Gao AU - Zaiman Liu PY - 2015/07 DA - 2015/07 TI - Convenient Preparation of Superhhydrophobic Ormosil Powder BT - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015 PB - Atlantis Press SP - 1551 EP - 1554 SN - 2352-5401 UR - https://doi.org/10.2991/icaees-15.2015.289 DO - 10.2991/icaees-15.2015.289 ID - Li2015/07 ER -