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High-Temperature Dielectric Polyimide Films for Energy Storage Applications
Published online by Cambridge University Press: 06 June 2013
Abstract
Two new diamines containing three nitriles are synthesized via a 3-step route. They are polymerized with four commercial dianhydrides (i.e. 6FDA, OPDA, BTDA and PMDA) in N,N-dimethylacetamide (DMAc) to afford poly(amic acid)s, which are thermally cured at temperatures up to 300 °C to form tough, creasable films. Most of these polyimides are soluble in common solvents. Their glass transition temperatures range from 216 to 341 °C. The polyimides are stable up to 400 °C. The dielectric constants of these OPDA-based polyimides increase from 2.9 (CP2) to 4.7 as measured by the D-E loops.
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- Information
- MRS Online Proceedings Library (OPL) , Volume 1541: Symposium F – Materials for Vehicular and Grid Energy Storage , 2013 , mrss13-1541-f05-11
- Copyright
- Copyright © Materials Research Society 2013
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