The effect of CaCu3Ti3.95Zr0.05O12 fillers on microstructure and dielectric behaviour of CaCu3Ti3.95Zr0.05O12/Polyimide composites

Author

Chi, Q.G. ; Gao, L. ; Sun, J. ; Wang, X. ; Lei, Q.Q.

Author_Institution

Key Lab. of Eng. Dielectr. & Its Applic., Harbin Univ. of Sci. & Technol., Harbin, China

fYear

2012

fDate

24-28 July 2012

Firstpage

1

Lastpage

4

Abstract

In the present study, the microstructure and dielectric properties of composites comprising Polyimide (PI) and CaCu3Ti4O12 (CCTO) or CaCu₃Ti_3.95Zr_0.05O₁₂ (CCTZO) particles have been investigated. CCTO and CCTZO were employed separately and investigated comparatively. The effective dielectric constant of the composite containing 40vol.% CCTZO filler is over 50 at 40°C (10² Hz), which is substantially higher than that of the composite containing CCTO. For the composite containing 40vol.% CCTZO, the dielectric constant and the conductivity increases sharply with increasing temperature. The mechanism of high dielectric constant was investigated finally.

Keywords

calcium compounds; ceramics; copper compounds; crystal microstructure; filled polymers; permittivity; titanium compounds; zirconium compounds; CCTZO particles; CaCu₃Ti_3.95Zr_0.05O₁₂; dielectric behaviour; dielectric constant; dielectric properties; filler effect; microstructure behaviour; polyimide composites; temperature 40 degC; Lead; Polymers; Powders; CaCu3Ti3.95Zr0.05O12; Ceramic-Polymer Composites; Dielectric constant; Polyimide;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials (ICPADM), 2012 IEEE 10th International Conference on the

Conference_Location

Bangalore

ISSN

2160-9225

Print_ISBN

978-1-4673-2852-4

Type

conf

DOI

10.1109/ICPADM.2012.6319026

Filename

6319026