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

1
Aix Marseille University, University Avignon, Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Developpement (IRD), Institut Méditerranéen de Biodiversité et d’Ecologie (IMBE), Marseille, 13397, France
2
Institut Méditerranéen de Biodiversité et d’Ecologie, Campus Agro Environmental Caraïbes, B.P. 214 Petit Morne, 97232 Le Lamentin, France
3
Prime Verre, 34090 Montpellier, France
*
Author to whom correspondence should be addressed.
Received: 4 January 2018 / Revised: 18 January 2018 / Accepted: 24 January 2018 / Published: 31 January 2018
(This article belongs to the Special Issue Aerogels 2018)
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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. View Full-Text
Keywords: aerogels; sintering; isostatic pressure; plastic hardening; elastic properties aerogels; sintering; isostatic pressure; plastic hardening; elastic properties
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Woignier, T.; Duffours, L. Densification and Strengthening of Aerogels by Sintering Heat Treatments or Plastic Compression. Gels 2018, 4, 12.

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