Epoxy/BaTiO3 Light-Cured Composites as Organic Capacitors

Epoxy/BaTiO3 hybrid materials are prepared as good candidates for organic capacitors. The hybrid system is cured by using camphorquinone and a iodonium salt through a free-radical promoted cationic polymerization using a long-wavelength tungsten halogen lamp. The cured films are fully characterized. Morphological characterization shows a well-dispersed inorganic phase within the organic matrix. Electrical characterization demonstrates a linear increase of the dielectric constant with increasing filler content, while low dielectric loss values are obtained.