Dielectric behaviour of CaCu3Ti4O12-epoxy composites

Ramajo, Leandro Alfredo; Ramírez, Miguel Angel; Bueno, Paulo Roberto; Reboredo, María Marta; Castro, Miriam Susana

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/130427

Title:

Dielectric behaviour of CaCu3Ti4O12-epoxy composites

Author(s):

Institution:

University of Mar del Plata
Universidade Estadual Paulista (UNESP)

ISSN:

1516-1439

Sponsorship:

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Abstract:

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.

Issue Date:

1-Jan-2008

Citation:

Materials Research, v. 11, n. 1, p. 85-88, 2008.

Time Duration:

85-88

Publisher:

Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials

Keywords:

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

Source:

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392008000100016&lng=en&nrm=iso&tlng=en

URI:

Access Rights:

Acesso aberto

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/130427

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