Dielectric properties of epoxy nanocomposites containing TiO/sub 2/, Al/sub 2/O/sub 3/ and ZnO fillers

This work presents results of dielectric spectroscopy and space charge (PEA) measurements on epoxy resin filled with 10% w/w micro- and nano- sized particles of TiO/sub 2/, Al/sub 3/O/sub 2/ and ZnO. The results appear to show that the material from which the nano-particle is made is not highly significant in influencing these results. The results support the proposition that the dielectric properties of such nano-filled composites are controlled by Stern-Gouy-Chapman layers ("interaction zones") around the particles.