INTEMA 05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Dielectric Behavior of Ag/BaTiO3/Epoxy Nanocomposites
Autor/es:
L. RAMAJO; M. REBOREDO; M. CASTRO
Lugar:
Rio de Janeairo
Reunión:
Conferencia; COMAT 2007; 2007
Institución organizadora:
Universidad Federal de Rio de Janeiro
Resumen:
Dielectric properties and relaxation phenomena of hybrid material (BaTiO3/epoxy/functionalized nanosilver) were studied as a function of ceramic content. Nanoparticles were obtained through chemical reduction in ethanol and triethylenetetramine. Epoxy resin, funtionalized Ag and BaTiO3 were mixed and composites were prepared by dipping on glass substrates. Samples containing various amounts of ceramic filler were examined by thermal analysis and SEM analysis. Dielectric measurements were performed at different frequencies and temperatures. It was found that hybrid materials had high permittivity and their relaxation processes were influenced by the epoxy resin near its Tg, while metallic and ceramic content modified the real permittivity values.
