CPC C08J 9/286 (2013.01) [B01D 69/125 (2013.01); B01D 71/64 (2013.01); C08G 73/10 (2013.01); C08G 73/1046 (2013.01); C08J 9/26 (2013.01); C08J 9/28 (2013.01); B01D 2323/30 (2013.01); C08J 2201/048 (2013.01); C08J 2201/0482 (2013.01); C08J 2201/0502 (2013.01); C08J 2205/026 (2013.01); C08J 2205/05 (2013.01); C08J 2300/202 (2013.01); C08J 2379/08 (2013.01)] | 25 Claims |
1. A porous aerogel material comprising:
(a) an open-cell structure; and
(b) a branched polymer matrix comprising polyimide polymer chains, wherein the matrix contains less than 5% by weight of crosslinked polymers,
wherein the branched polymer matrix has a degree of branching of at least 0.5 branches per polyimide polymer chain, and
wherein the porous aerogel material is radio frequency (RF) transparent.
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