Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1641344 | Materials Letters | 2016 | 4 Pages |
Abstract
Hydrophobic polyimide aerogels with high solubility were prepared by combining sol-gel technology and supercritical CO2 extraction. Polyimide gels were derived from hybrid diamines 4, 4â²-oxydianiline (ODA) and 2, 2-Bis [4-(4-aMinophenoxy) phenyl] propane (BAPP) with chemical imidization. Introduction of BAPP enhanced the hydrophobicity and water resistance of the obtained polyimide aerogels, as well as the solution-process ability. Overall, the obtained polyimide aerogels have low thermal conductivity in the range of 0.032-0.059Â W/mK. Comparing to the conventional polyimide aerogels, solution-processable polyimide aerogels with high hydrophobicity are more applicable as thermal insulators in harsh environments.
Related Topics
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Authors
Shuai Wu, Ai Du, Shangming Huang, Wei Sun, Youlai Xiang, Bin Zhou,