The electret effects of crystallized polymer-ferropiezoelectric composite under electric discharge plasma
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Date
2015
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Abstract
The fluorine-containing polymer composite filled with piezo-ceramics such as PZT-2, PZT-5A, PZT-8 were prepared by a hot pressing method. The electret composites were treated by an electric discharge plasma process, formed by crystallization via electro-thermal treatment, and polarized. The surface charge density and the charge relaxation time of the electret composite were investigated using thermo-stimulated depolarization and their potential differences were defined via a contactless measurement method. According to the obtained experimental results, the stability of the electret charge of a composite based on F42 + PZT-5A is better than a composite based on F3 + PZT-8. © 2015 Elsevier B.V..
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Keywords
Copolymers , Electrets , Filled polymers , Fluorine , Fluorine containing polymers , Hot pressing , Plasma theory , Polymers , Active composites , Charge relaxation time , Contactless measurement , Crystallized polymers , Discharge plasma , Electret effects , Hot pressing method , Potential difference , Electric discharges