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.
Epoxy-bohemite nanocomposites as new insulating materials / M. Sangermano; F. Deorsola; D. Fabiani; G.C. Montanari; G. Rizza. - In: JOURNAL OF APPLIED POLYMER SCIENCE. - ISSN 0021-8995. - STAMPA. - 114:(2009), pp. 2541-2546. [10.1002/app.30799]
Epoxy-bohemite nanocomposites as new insulating materials
FABIANI, DAVIDE;MONTANARI, GIAN CARLO;
2009
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
