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Epoxy‐boehmite nanocomposites as new insulating materials
Author(s) -
Sangermano Marco,
Deorsola Fabio,
Fabiani Davide,
Montanari Giancarlo,
Rizza Giancarlo
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30799
Subject(s) - epoxy , boehmite , materials science , nanocomposite , composite material , space charge , filler (materials) , dielectric , fourier transform infrared spectroscopy , photopolymer , dispersion (optics) , polymer , chemical engineering , electron , polymerization , aluminium , physics , optoelectronics , optics , quantum mechanics , engineering
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. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009