The results of a comparative analysis performed on specimens of nanostructured epoxy resins obtained by different boehmite filler concentrations are reported in this paper. The specimens were prepared by dispersion of boehmite nanoparticles into a cycloaliphatic epoxy resin cross linked under UV. Photopolymerization process was followed by RT-FTIR and the properties of uv-cured films investigated. Dielectric properties, in particular space charge accumulation, are measured as a function of nanofiller content. Results indicate that space charge build up and charge mobility are affected largely by filler content. Concentrations of nanofiller of 5–7 wt % show significant decrease of the space charge with respect to the base-epoxy resin and an increased mobility of negative carriers.
Titolo: | Epoxy-bohemite nanocomposites as new insulating materials |
Autore/i: | M. Sangermano; F. Deorsola; FABIANI, DAVIDE; MONTANARI, GIAN CARLO; G. Rizza |
Autore/i Unibo: | |
Anno: | 2009 |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/app.30799 |
Abstract: | The results of a comparative analysis performed on specimens of nanostructured epoxy resins obtained by different boehmite filler concentrations are reported in this paper. The specimens were prepared by dispersion of boehmite nanoparticles into a cycloaliphatic epoxy resin cross linked under UV. Photopolymerization process was followed by RT-FTIR and the properties of uv-cured films investigated. Dielectric properties, in particular space charge accumulation, are measured as a function of nanofiller content. Results indicate that space charge build up and charge mobility are affected largely by filler content. Concentrations of nanofiller of 5–7 wt % show significant decrease of the space charge with respect to the base-epoxy resin and an increased mobility of negative carriers. |
Data prodotto definitivo in UGOV: | 2010-03-01 09:20:46 |
Appare nelle tipologie: | 1.01 Articolo in rivista |