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Dielectric composites made using P(VDF-CTFE) 88/12 mol% as polymer matrix and both micro-sized and nano-sized CaCu3Ti4O12 (CCTO) particles as filler are developed. These composites exhibit high dielectric constant with a small dielectric loss. More importantly, it is found that the dielectric constant of these composites is almost independent of temperature from 25 ℃ to 125 ℃. Comparing the composites made using micro-sized CCTO particles, the composites made using nano-sized CCTO particles exhibit a smaller dielectric loss. The dielectric properties of these composites indicate that the nano-sized CCTO particles have a smaller dielectric constant than the micro-sized CCTO particles.


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Dielectric composites with a high and temperature-independent dielectric constant

Show Author's information Xiaobing SHANLin ZHANGXiqiao YANGZ.-Y. CHENG*( )
Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA

Abstract

Dielectric composites made using P(VDF-CTFE) 88/12 mol% as polymer matrix and both micro-sized and nano-sized CaCu3Ti4O12 (CCTO) particles as filler are developed. These composites exhibit high dielectric constant with a small dielectric loss. More importantly, it is found that the dielectric constant of these composites is almost independent of temperature from 25 ℃ to 125 ℃. Comparing the composites made using micro-sized CCTO particles, the composites made using nano-sized CCTO particles exhibit a smaller dielectric loss. The dielectric properties of these composites indicate that the nano-sized CCTO particles have a smaller dielectric constant than the micro-sized CCTO particles.

Keywords:

dielectric constant, composite, CCTO, P(VDF-CTFE), temperature dependence
Received: 05 October 2012 Revised: 30 November 2012 Accepted: 01 December 2012 Published: 09 January 2013 Issue date: December 2012
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Publication history
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Publication history

Received: 05 October 2012
Revised: 30 November 2012
Accepted: 01 December 2012
Published: 09 January 2013
Issue date: December 2012

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© The author(s) 2012

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