Electrical insulating characteristics of polymer nanocomposites for high voltage applications

Polymer nanocomposites have attracted wide interests in electrical insulating society due to its potential properties enhancement. In the present work, high density polyethylene (HDPE) nanocomposites containing 2 wt%, 5 wt% and 8 wt% of nanosized organically modified montmorillonite clay (nanoclay)...

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Main Author:	Lau, Kwan Yiew
Format:	Thesis
Published:	2010
Subjects:	TK Electrical engineering Electronics Nuclear engineering
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id	my-utm-ep.36281
record_format	uketd_dc
spelling	my-utm-ep.362812017-08-14T03:31:11Z Electrical insulating characteristics of polymer nanocomposites for high voltage applications 2010 Lau, Kwan Yiew TK Electrical engineering. Electronics Nuclear engineering Polymer nanocomposites have attracted wide interests in electrical insulating society due to its potential properties enhancement. In the present work, high density polyethylene (HDPE) nanocomposites containing 2 wt%, 5 wt% and 8 wt% of nanosized organically modified montmorillonite clay (nanoclay) were investigated, with unfilled HDPE served as reference material. The nanocomposites were prepared by using Brabender Plasticorder twin screw extruder. Scanning Electron Microscope (SEM) characterization was performed to determine the dispersion state of nanoclay in HDPE. Electrical insulating properties, mainly the surface tracking and internal discharge characteristics were investigated based on BS EN 60587: 2007 and CIGRE Method II test standards respectively. It was found that nanoclay negatively affected the surface tracking property of HDPE, in which higher amount of nanoclay causes more severe tracking progression. A degradation mechanism leading to the adverse effect of nanoclay towards surface tracking was proposed. In addition, contact angle measurement was performed to determine the hydrophobicity of the test samples. Results indicate that HDPE nanocomposites were less hydrophobic than unfilled HDPE. For internal discharge test, unfilled HDPE shows the highest resistance towards internal discharge. Interestingly, among nanocomposites, higher loading of nanoclay improved the internal discharge performance of the insulating material. Meanwhile, thermal characterization through Differential Scanning Calorimeter (DSC) shows that there is no significant difference observed for melting and cooling endotherms of HDPE nanocomposites and unfilled HDPE. 2010 Thesis http://eprints.utm.my/id/eprint/36281/ masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Lau, Kwan Yiew Electrical insulating characteristics of polymer nanocomposites for high voltage applications
description	Polymer nanocomposites have attracted wide interests in electrical insulating society due to its potential properties enhancement. In the present work, high density polyethylene (HDPE) nanocomposites containing 2 wt%, 5 wt% and 8 wt% of nanosized organically modified montmorillonite clay (nanoclay) were investigated, with unfilled HDPE served as reference material. The nanocomposites were prepared by using Brabender Plasticorder twin screw extruder. Scanning Electron Microscope (SEM) characterization was performed to determine the dispersion state of nanoclay in HDPE. Electrical insulating properties, mainly the surface tracking and internal discharge characteristics were investigated based on BS EN 60587: 2007 and CIGRE Method II test standards respectively. It was found that nanoclay negatively affected the surface tracking property of HDPE, in which higher amount of nanoclay causes more severe tracking progression. A degradation mechanism leading to the adverse effect of nanoclay towards surface tracking was proposed. In addition, contact angle measurement was performed to determine the hydrophobicity of the test samples. Results indicate that HDPE nanocomposites were less hydrophobic than unfilled HDPE. For internal discharge test, unfilled HDPE shows the highest resistance towards internal discharge. Interestingly, among nanocomposites, higher loading of nanoclay improved the internal discharge performance of the insulating material. Meanwhile, thermal characterization through Differential Scanning Calorimeter (DSC) shows that there is no significant difference observed for melting and cooling endotherms of HDPE nanocomposites and unfilled HDPE.
format	Thesis
qualification_level	Master's degree
author	Lau, Kwan Yiew
author_facet	Lau, Kwan Yiew
author_sort	Lau, Kwan Yiew
title	Electrical insulating characteristics of polymer nanocomposites for high voltage applications
title_short	Electrical insulating characteristics of polymer nanocomposites for high voltage applications
title_full	Electrical insulating characteristics of polymer nanocomposites for high voltage applications
title_fullStr	Electrical insulating characteristics of polymer nanocomposites for high voltage applications
title_full_unstemmed	Electrical insulating characteristics of polymer nanocomposites for high voltage applications
title_sort	electrical insulating characteristics of polymer nanocomposites for high voltage applications
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2010
_version_	1747816423541964800

Electrical insulating characteristics of polymer nanocomposites for high voltage applications

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