期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 29, 页码 33288-33296出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c09321
关键词
polyimide aerogels; flexible; aliphatic; dodecyldiamine; conformal antenna substrate
资金
- Advanced Air Vehicles Program, Convergent Aeronautics Solutions (CAS) Project
- NASA LERCIP internship program
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.
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