Aerogel composites, process for producing the same and their...

Details Aerogel composites, process for producing the same and their... Aerogel composites, process for producing the same and their...

C - Chemistry, Metallurgy

04

B

C04B 38/00 (2006.01) B01J 13/00 (2006.01) C04B 30/02 (2006.01) C04B 35/14 (2006.01) C04B 35/80 (2006.01) F16L 59/00 (2006.01)

Patent

CA 2198756

Composite materials shaped as mats with porosities over 60 % and densities below 0.6 g/cm3 contain an aerogel and fibres distributed therein. The composite materials are characterised in that the aerogel has cracks and in that the aerogel fragments enclosed by the cracks, with an average volume from 0.001 mm3 to 1 cm3, are held together by the fibres. Also disclosed are a process for producing said composite materials and their use.

Des matériaux composites sous forme d'un mat ayant une porosité supérieure à 60 % et une densité inférieure à 0,6 g/cm?3¿ contiennent un aérogel et des fibres réparties dans celui-ci. Ces matériaux composites se caractérisent en ce que l'aérogel présente des fissures et en ce que les fragments d'aérogel entourés par les fissures et dont le volume moyen est compris entre 0,001 mm?3¿ et 1 cm?3¿ sont maintenus ensemble par les fibres. L'invention concerne en outre un procédé de production de ces matériaux composites et leur utilisation.

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