BaTiO3-Epoxy Composites for Electronic Applications

LEANDRO ALFREDO RAMAJO; MARIA MARTA REBOREDO; MIRIAM SUSANA CASTRO

International Journal of Applied Ceramic Technology

Wiley

Año: 2010 vol. 7 p. 444 - 451

1546-542X

A brief review related with dielectric properties of BaTiO3/epoxy composites is presented. The composites were obtained employing the dipping technique. To facilitate the mixing and modify the filler surface, a solvent and a surface coupling agent were used. Intermediate and low concentrations of solvent and silane improved microstructure and dielectric properties of the composite material, whereas higher concentrations led to composites of poor quality. Finally, a model employing finite elements was used, in order to predict the composite permittivity in relation to the percentage of filler. Model results were compared with the Effective Medium Theory and experimental results.