Space charge characteristics of thermally aged epoxy based nanocomposite

Author

Pandey, J.C. ; Gupta, Neeraj

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Kanpur, Kanpur, India

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

707

Lastpage

710

Abstract

Space charge accumulation has been identified as one of the principal aging factors in polymeric materials, typically through electric field distortion and energy dissipative processes. Thus characterization of space charge behavior in aging insulating materials is important. In this paper, we study the space charge characteristics of epoxy and an epoxy-based nanocomposite. Bisphenol-A type epoxy resin (LY 556) is used as polymer matrix. Aluminum oxide (size 40 to 47nm, density 3.97 g/cm³ at 25°C) is used as nano filler. Pulsed Electro-Acoustic (PEA) technique and Electroluminescence (EL) measurement using a Photo Multiplier Tube (PMT) operated in photon counting mode are used in order to estimate space charge accumulation. Further, we investigate the effect of thermal aging on space charge in epoxy and the nanocomposite. Aging is characterised by estimating material changes through X-Ray Diffraction (XRD) analysis and Fourier Transform Infra Red (FTIR) spectroscopy. The nanocomposite is found to exhibit lower space charge accumulation and a higher threshold field for aging.

Keywords

Fourier transform spectra; X-ray diffraction; aluminium compounds; electric fields; electroluminescence; epoxy insulation; infrared spectra; nanocomposites; photomultipliers; photon counting; pulsed electroacoustic methods; space charge; Bisphenol-A type epoxy resin; EL measurement; Fourier transform infra red spectroscopy; LY 556; PEA technique; PMT; X-ray diffraction analysis; XRD analysis; aging insulating material; aluminum oxide; electric field distortion; electroluminescence measurement; energy dissipative process; nanofiller; photo multiplier tube; photon counting mode; polymer matrix; polymeric material; pulsed electroacoustic technique; space charge accumulation; thermal aging; thermally aged epoxy based nanocomposite; Aging; Electric fields; Electroluminescence; Polymers; Space charge; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2013 IEEE Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/CEIDP.2013.6748254

Filename

6748254