Title :
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
Abstract :
In the present study, the microstructure and dielectric properties of composites comprising Polyimide (PI) and CaCu3Ti4O12 (CCTO) or CaCu3Ti3.95Zr0.05O12 (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; CaCu3Ti3.95Zr0.05O12; 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;
Conference_Titel :
Properties and Applications of Dielectric Materials (ICPADM), 2012 IEEE 10th International Conference on the
Conference_Location :
Bangalore
Print_ISBN :
978-1-4673-2852-4
DOI :
10.1109/ICPADM.2012.6319026
