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Densification and Strengthening of Aerogels by Sintering Heat Treatments or Plastic Compression

Abstract : Due to their broad range of porosity, aerogels are suited to various applications. The advantages of a broad range of porosity are used directly, for example, in thermal and acoustic insulation, as materials for space applications or in catalysers. However, an overly high pore volume can also be a drawback, for example, in a glass precursor and host matrix. Fortunately, aerogel porosity can be tailored using sintering or isostatic compression. Sets of silica aerogels-sintered and compressed aerogels-have been studied with the objective of comparing these different densification mechanisms. We focus on the mechanical changes during the two processes of densification.
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Submitted on : Friday, December 21, 2018 - 9:21:06 AM
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Thierry Woignier, Laurent Duffours. Densification and Strengthening of Aerogels by Sintering Heat Treatments or Plastic Compression. Gels, MDPI, 2018, 4 (1), pp.12. ⟨10.3390/gels4010012⟩. ⟨hal-01963004⟩

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