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Flexible Polyimide Aerogels with Dodecane Links in the Backbone Structure.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-26 , DOI: 10.1021/acsami.0c09321
Haiquan Guo 1 , Mary Ann B Meador 2 , Jessica L Cashman 2 , David Tresp 2 , Bushara Dosa 2 , Daniel A Scheiman 1 , Linda S McCorkle 1
Affiliation  

Polyimide aerogels using 1,12-dodecyldiamine (DADD), 3,3′-dimethylbenzidine (DMBZ), and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) and cross linked using 1,3,5-triaminophenoxybenzene (TAB) were synthesized. Substitution of the aromatic diamine, DMBZ, with varying amounts of the aliphatic diamine, DADD, increases the flexibility in the backbone structure of the prepared aerogel. These aerogels are also lightweight, low density, have a low dielectric constant, and high modulus. Their overall properties (density, shrinkage, porosity, dielectric constant, water uptake, and modulus) and potential use as a conformal substrate for lightweight, high-performance antennas are discussed.

中文翻译:

骨架结构中具有十二烷键的柔性聚酰亚胺气凝胶。

使用1,12-十二烷基二胺(DADD),3,3'-二甲基联苯胺(DMBZ)和3,3',4,4'-联苯四甲酸二酐(BPDA)的聚酰亚胺气凝胶,并使用1,3,5-三氨基苯氧基苯( TAB)被合成。用不同量的脂肪族二胺DADD取代芳香族二胺DMBZ,可以提高所制备气凝胶骨架结构的柔韧性。这些气凝胶重量轻,密度低,介电常数低和模量高。讨论了它们的整体性能(密度,收缩率,孔隙率,介电常数,吸水率和模量)以及用作轻巧高性能天线的保形基板的潜在用途。
更新日期:2020-07-22
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