Article (Scientific journals)
Aerogel compression theoretical analysis
Pirard, René; Pirard, Jean-Paul
1997In Journal of Non-Crystalline Solids, 212 (2-3), p. 262-267
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Abstract :
[en] Several authors have empirically shown that, in aerogels, a power law exists between the mechanical moduli and the bulk density. An exponent value can be determined from mercury porosimetry curves. The shrinkage of aerogels under mercury pressure follows a buckling mechanism which links the pore size to the exerted pressure. The present study relates the exponent to the pore volume distribution which can be described by a hierarchical model valid in a large range of pore size, so a physical meaning is given to the exponent.
Disciplines :
Chemical engineering
Materials science & engineering
Author, co-author :
Pirard, René ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée
Pirard, Jean-Paul ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée
Language :
English
Title :
Aerogel compression theoretical analysis
Publication date :
1997
Journal title :
Journal of Non-Crystalline Solids
ISSN :
0022-3093
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
212
Issue :
2-3
Pages :
262-267
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 August 2009

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