%0 Conference Paper
%F Oral 
%T Polyurethane aerogels synthesis for thermal insulation – textural, thermal and mechanical properties
%+ Centre Procédés, Énergies Renouvelables, Systèmes Énergétiques (PERSEE)
%+ Laboratoire Charles Coulomb (L2C)
%+ Centre Scientifique et Technique du Bâtiment (CSTB)
%A Diascorn, Noémie
%A Etienne-Calas, Sylvie
%A Sallee, Hébert
%A Achard, Patrick
%A Rigacci, Arnaud
%< avec comité de lecture
%Z L2C:15-074
%3 The Journal of Supercritical Fluids
%B Second International Seminar on Aerogels - Properties-Manufact
%C Hambourg, Germany
%Y Irina Smirnova
%I Elsevier
%S Aerogels: current status and challenges for the future
%V 106
%P 76–84
%8 2014-10-06
%D 2014
%R 10.1016/j.supflu.2015.05.012
%K thermal conductivity
%K aerogels
%K polyurethane
%K Mesoporous materials
%K uniaxial compression
%Z Engineering Sciences [physics]/domain_spi.energ
%Z Engineering Sciences [physics]/MaterialsConference papers
%X Polyurethane aerogels were prepared via sol-gel synthesis and dried with supercritical carbon dioxide (CO2) according to catalyst concentration. The influence of this parameter was investigated, first in order to modify the reaction kinetics, then to study its impact on several characteristics. It was observed that this parameter influences the global shrinkage and the bulk density of the resulting materials. The effect of catalyst concentration on the dry samples was then studied in terms of textural, thermal and mechanical properties, thanks to scanning electron microscopy (SEM), nitrogen (N2) adsorption, non-intrusive mercury (Hg) porosimetry, thermal conductivity measurements and uniaxial compression tests. Results allowed us to identify correlations between these characteristics and to determine an optimal density range for thermal and mechanical compromise associated with a fine internal mesoporous texture.
%G English
%L hal-01155110
%U https://minesparis-psl.hal.science/hal-01155110
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%~ ENSMP
%~ CSTB
%~ CNRS
%~ PARISTECH
%~ L2C
%~ PERSEE
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%~ MIPS
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%~ UNIV-MONTPELLIER
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%~ UM-2015-2021
%~ ENSMP_PERSEE