DocumentCode :
1438581
Title :
Partial discharge resistant characteristics of epoxy nanocomposites
Author :
Preetha, P. ; Thomas, M. Joy
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India
Volume :
18
Issue :
1
fYear :
2011
fDate :
2/1/2011 12:00:00 AM
Firstpage :
264
Lastpage :
274
Abstract :
Epoxy nanocomposite samples with a good dispersion of alumina nanoparticles in epoxy matrix were prepared and experiments were performed to measure their partial discharge resistant characteristics. Epoxy alumina nanocomposites with 0.1, 1, 5, 10 and 15 wt% nanofillers were prepared in the laboratory and partial discharge (PD) experiments were conducted at a voltage of 10 kV for different durations using IEC (b) type electrodes. The degradation of the sample surfaces were analyzed using SEM techniques, surface profile studies, FTIR spectroscopy as well as PD studies. An attempt was made to understand the interaction dynamics between the nanoparticle and the epoxy chain by measuring the glass transition temperature of the nanocomposites. The partial discharge resistance obtained for the nanocomposites are compared with those of unfilled epoxy and epoxy microcomposites. It was observed that even with 0.1 wt% of nanofiller added to the epoxy matrix, the partial discharge resistance to degradation gets improved considerably. It was also observed that the inter particle distance has a significant effect on the discharge resistance to degradation. The improvement in the degradation resistance is attributed to the interactions between the nanoparticle and the epoxy chain. A possible mechanism for the surface degradation of nanocomposites has been proposed.
Keywords :
Fourier transform spectra; alumina; discharges (electric); filled polymers; glass transition; infrared spectra; nanocomposites; nanoparticles; scanning electron microscopy; Al2O3; FTIR spectroscopy; IEC (b) type electrodes; SEM techniques; alumina nanoparticles; epoxy alumina nanocomposites; epoxy chain; epoxy matrix; glass transition temperature; nanoparticle; partial discharge resistant characteristics; surface profile; voltage 10 kV; Degradation; Discharges; Nanocomposites; Resistance; Rough surfaces; Surface discharges; Surface roughness; Epoxy; nanocomposites; nanofiller; partial discharge; surface degradation;
fLanguage :
English
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
1070-9878
Type :
jour
DOI :
10.1109/TDEI.2011.5704518
Filename :
5704518
Link To Document :
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