화학공학소재연구정보센터
Materials Research Bulletin, Vol.70, 735-742, 2015
Poly(vinylidene fluoride)/CaCu3Ti4O12 and La doped CaCu3Ti4O12 composites with improved dielectric and mechanical properties
Melt extrusion process has been used to prepare high relative permittivity, epsilon' PVDF-CCTO and PVDF- LaCCTO composites. Phase composition has been studied using powder X-ray diffraction (XRD). Microstructural, dielectric and mechanical properties have also been studied. Young's modulus of PVDF increases with the ceramic reinforcement. Dielectric measurements are made in the frequency range 10(-2)-10(6) Hz using two probe Novocontrol impedance analyser (ZG4) from room temp to 120 degrees C to study the dielectric relaxation. There is a substantial increase in epsilon' of the matrix PVDF on addition of LaCCTO. (C) 2015 Elsevier Ltd. All rights reserved.