Thermal properties of methyltrimethoxysilane aerogel thin films
Aerogels are light and porous solids whose properties, largely determined by their nanostructure, are useful in a wide range of applications, e.g., thermal insulation. In this work, as-deposited and thermally treated air-filled silica aerogel thin films synthesized using the sol-gel method were stud...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2016-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4965921 |
| _version_ | 1819057625230213120 |
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| author | Leandro N. Acquaroli Pascal Newby Clara Santato Yves-Alain Peter |
| author_facet | Leandro N. Acquaroli Pascal Newby Clara Santato Yves-Alain Peter |
| author_sort | Leandro N. Acquaroli |
| collection | DOAJ |
| description | Aerogels are light and porous solids whose properties, largely determined by their nanostructure, are useful in a wide range of applications, e.g., thermal insulation. In this work, as-deposited and thermally treated air-filled silica aerogel thin films synthesized using the sol-gel method were studied for their thermal properties using the 3-omega technique, at ambient conditions. The thermal conductivity and diffusivity were found to increase as the porosity of the aerogel decreased. Thermally treated films show a clear reduction in thermal conductivity compared with that of as-deposited films, likely due to an increase of porosity. The smallest thermal conductivity and diffusivity found for our aerogels were 0.019 W m−1 K−1 and 9.8 × 10-9 m2 s−1. A model was used to identify the components (solid, gaseous and radiative) of the total thermal conductivity of the aerogel. |
| first_indexed | 2024-12-21T13:42:17Z |
| format | Article |
| id | doaj.art-4a990ecae6e34c879d481a0bad55bb72 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T13:42:17Z |
| publishDate | 2016-10-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-4a990ecae6e34c879d481a0bad55bb722022-12-21T19:01:59ZengAIP Publishing LLCAIP Advances2158-32262016-10-01610105007105007-710.1063/1.4965921023610ADVThermal properties of methyltrimethoxysilane aerogel thin filmsLeandro N. Acquaroli0Pascal Newby1Clara Santato2Yves-Alain Peter3Department of Engineering Physics, Polytechnique Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, Québec H3C 3A7, CanadaDepartment of Mechanical Engineering, Université de Sherbrooke, 3000 Bv. Université, Sherbrooke, Québec J1K 0A5, CanadaDepartment of Engineering Physics, Polytechnique Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, Québec H3C 3A7, CanadaDepartment of Engineering Physics, Polytechnique Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, Québec H3C 3A7, CanadaAerogels are light and porous solids whose properties, largely determined by their nanostructure, are useful in a wide range of applications, e.g., thermal insulation. In this work, as-deposited and thermally treated air-filled silica aerogel thin films synthesized using the sol-gel method were studied for their thermal properties using the 3-omega technique, at ambient conditions. The thermal conductivity and diffusivity were found to increase as the porosity of the aerogel decreased. Thermally treated films show a clear reduction in thermal conductivity compared with that of as-deposited films, likely due to an increase of porosity. The smallest thermal conductivity and diffusivity found for our aerogels were 0.019 W m−1 K−1 and 9.8 × 10-9 m2 s−1. A model was used to identify the components (solid, gaseous and radiative) of the total thermal conductivity of the aerogel.http://dx.doi.org/10.1063/1.4965921 |
| spellingShingle | Leandro N. Acquaroli Pascal Newby Clara Santato Yves-Alain Peter Thermal properties of methyltrimethoxysilane aerogel thin films AIP Advances |
| title | Thermal properties of methyltrimethoxysilane aerogel thin films |
| title_full | Thermal properties of methyltrimethoxysilane aerogel thin films |
| title_fullStr | Thermal properties of methyltrimethoxysilane aerogel thin films |
| title_full_unstemmed | Thermal properties of methyltrimethoxysilane aerogel thin films |
| title_short | Thermal properties of methyltrimethoxysilane aerogel thin films |
| title_sort | thermal properties of methyltrimethoxysilane aerogel thin films |
| url | http://dx.doi.org/10.1063/1.4965921 |
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