Title :
Nanostructured epoxy/POSS composites: High performance dielectrics with improved breakdown strength and corona resistance
Author :
Heid, T. ; Frechette, Michel ; David, E.
Author_Institution :
Inst. de Rech. d´Hydro-Quebec (IREQ), Varennes, QC, Canada
Abstract :
In this work, the dielectric properties of epoxy/POSS composites with different contents of Glycidyl-POSS varying from 1 wt% to 5 wt% were investigated using Broadband Dielectric Spectroscopy (BDS) at 20 °C. Besides the known β-peak in the vicinity of 100 kHz, no additional loss peaks were found for the epoxy/POSS composites due to good dispersion of the additive in the epoxy matrix. Furthermore, the AC breakdown strength of the epoxy/POSS composites was found to be significantly improved compared to neat epoxy. Additionally, the resistance to electrical discharges has been remarkably improved as a function of POSS content.
Keywords :
corona; dielectric properties; epoxy insulation; nanocomposites; polymer blends; β-peak; AC breakdown strength; BDS; Glycidyl-POSS; additive; broadband dielectric spectroscopy; corona resistance; dielectric properties; electrical discharges resistance; epoxy matrix; frequency 100 kHz; nanostructured epoxy-POSS composites; temperature 20 C; Corona; Dielectrics; Discharges (electric); Insulation; Polymers; Resistance; AC breakdown strength; POSS; corona discharge; dielectric response; epoxy; erosion; interfacial polarization; nanodielectrics; polymer nanocomposites; silica;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2014 IEEE Conference on
Conference_Location :
Des Moines, IA
DOI :
10.1109/CEIDP.2014.6995766
