Methods of preparing hybrid aerogels

Details Methods of preparing hybrid aerogels Methods of preparing hybrid aerogels

C - Chemistry, Metallurgy

09

K

C09K 3/30 (2006.01) B01J 21/08 (2006.01) C08L 83/00 (2006.01)

Patent

CA 2747205

Methods of preparing hybrid aerogels are described. The methods include co-condensing a metal oxide precursor and an organo-- functional metal oxide precursor, and crosslinking the organo-functional groups with an ethylenically-unsaturated crosslink agent. Thermal ener-gy and actinic radiation crosslinking are described. Both supercritical aerogel and xerogels, including hydrophobic supercritical aerogel and xerogels, are described. Aerogel articles, including flexible aerogel arti- cles are also disclosed.

L'invention porte sur des procédés de préparation d'aérogels hybrides. Les procédés comprennent la co-condensation d'un précurseur oxyde métallique et d'un précurseur oxyde métallique organo-fonctionnel, et la réticulation des groupes organo-fonctionnels avec un agent réticulant à insaturation éthylénique. Des réticulations par énergie thermique et rayonnement actinique sont décrites. A la fois un aérogel supercritique et des xérogels, comprenant un aérogel supercritique hydrophobe des xérogels, sont décrits. L'invention porte sur des articles aérogels, comprenant des articles aérogels flexibles.

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