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Theses

Elaboration d'isolants thermiques à partir de matériaux siliciques poreux nanostructurés

Abstract : This thesis aims at developing new thermal (super)insulators from nanostructured silicas such as Organized Mesoporous Silicas and phyllosilicates. First, new materials were created controlling the key-parameters of the synthesis ; these materials were then finely characterized and especially their thermal properties. On one hand, studied materials are mesoporous silica micro- and nanoparticles synthesized with controlled intra- and interparticular porosities, and on the other hand natural and synthetic phyllosilicates. Then post-synthesis treatments were applied to enhance significantly thermal and mechanical performances of the products. In a further step, in the case of the treated phyllosilicates, low-density phyllosilicates/polymers composites and intercalated and/or delaminated phyllosilicates/surfactant composites were synthesized to improve the properties that were obtained and to process the materials. Thermal conductivity was determined for all the samples.
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Laurent Bippus. Elaboration d'isolants thermiques à partir de matériaux siliciques poreux nanostructurés. Autre. Université de Haute Alsace - Mulhouse, 2009. Français. ⟨NNT : 2009MULH3132⟩. ⟨tel-02128187⟩

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