Actions for Polarization Stability of Amorphous Piezoelectric Polyimides

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Polarization Stability of Amorphous Piezoelectric Polyimides

Author
Harrison, J. S.
Published
[2000].
Physical Description
1 electronic document
Additional Creators
Smith, J. G., Jr., Su, J., Park, C., and Ounaies, Z.
Online Version

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Summary
Amorphous polyimides containing polar functional groups have been synthesized and investigated for potential use as high temperature piezoelectric sensors. The thermal stability of the piezoelectric effect of one polyimide was evaluated as a function of various curing and poling conditions under dynamic and static thermal stimuli. First, the polymer samples were thermally cycled under strain by systematically increasing the maximum temperature from 50 C to 200 C while the piezoelectric strain coefficient was being measured. Second, the samples were isothermally aged at an elevated temperature in air, and the isothermal decay of the remanent polarization was measured at room temperature as a function of time. Both conventional and corona poling methods were evaluated. This material exhibited good thermal stability of the piezoelectric properties up to 100 C.
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Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20040086683.
Terms of Use and Reproduction
Copyright, Distribution as joint owner in the copyright.
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