INVESTIGADORES
CASTRO Miriam Susana
artículos
Título:
Dielectric relaxation behavior of CaCu3Ti4O12-epoxy composites
Autor/es:
L. RAMAJO; M. A. RAMIREZ; P. R. BUENO; M. M. REBOREDO; M. S. CASTRO
Revista:
MATERIALS RESEARCH
Editorial:
ABM, ABC, ABPol, SBCC, SBCr, SBMM, SBPMat
Referencias:
Año: 2008 vol. 11 p. 85 - 88
ISSN:
1516-1439
Resumen:
The dielectric behavior of composite materials (epoxy resin barium titanate and epoxy CCTO) was analysed as a function of ceramic amount. Composites were prepared by mixing the components and pouring them into suitable moulds. In some compositions, the matrix was reduced by tetrahydrofuran (THF) incorporation. Samples containing various amounts of ceramic filler were examined by TG/DTA and scanning electron microscopy analysis. Dielectric measurements were performed from 20Hz to 1 MHz and 30ºC to 120ºC. It was demonstrated that the epoxy CCTO composites possessed higher permittivity than classic epoxy BaTiO3 composites. However, the low resin permittivity prevailed in the composite dielectric performance.
