Dielectric behaviour of CaCu3Ti4O12-epoxy composites
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Data
2008-01-01
Autores
Ramajo, Leandro Alfredo
Ramírez, Miguel Angel [UNESP]
Bueno, Paulo Roberto [UNESP]
Reboredo, María Marta
Castro, Miriam Susana
Título da Revista
ISSN da Revista
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Editor
Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials
Resumo
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 20 Hz to 1 MHz and 30 to 120 °C. 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.
Descrição
Palavras-chave
Composites, Electrical properties, Polymer-matrix composites (PMCs), Barium, Barium titanate, Calcium alloys, Carbon fiber reinforced plastics, Ceramic materials, Dielectric materials, Electron microscopes, Electron microscopy, Electron optics, Epoxy resins, Imaging techniques, Microfluidics, Microscopic examination, Mixing, Pigments, Resins, Scanning, Scanning electron microscopy, Ceramic fillers, Dielectric behavior, Dielectric behaviour, Dielectric measurements, Electron microscopy analysis, Tetrahydrofuran (pTHF), Painting
Como citar
Materials Research, v. 11, n. 1, p. 85-88, 2008.