Organically modified hybrid aerogels
AssigneeAspen Aerogel, Inc.
InventorsWenting Dong, Wendell E Rhine, Decio Coutinho
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Abstract
Disclosed and claimed herein are hybrid aerogels which are compositions of tetraalkoxysilanes and bis-(trialkoxysilyl) imides that exhibit low thermal conductivities and high compressive strengths. Methods for their preparation are also provided.
Claims20
Hybrid aerogels comprising a polymeric network which comprises a silica component and diimide component, which are the reaction product of:
- (a) at least one tetraalkoxysilane which may optionally be partially hydrolyzed,
- (b) at least one bis-trialkoxysilane diimide, and
- (c) a selected amount of water;
- wherein a gelation catalyst is admixed to gel the reaction product;
- and wherein the gel is dried to obtain an aerogel.
A hybrid aerogel comprising a polymeric network which comprises a silica component and diimide component, wherein the diimide component is covalently bonded to one or more silica molecules within the silica component of the polymeric network, wherein the hybrid aerogel has a density of 0.70 g/cc or less.
Dependencies are inferred from the claim text.