Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application

This research is to study the effect of nanofillers on mechanical, physical, dielectric and thermal properties of the crosslinked polyethylene (XLPE) matrix. Untreated nanofillers used are zinc oxide (ZnO) and aluminium oxide (Al2O3). Treated nanofillers used are organoclay (OMMT), 3-aminopropylt...

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Main Author:	Lim, Kai Sheng
Format:	Thesis
Language:	English
Published:	2018
Subjects:	T Technology
Online Access:	http://eprints.usm.my/46666/1/Characterization%20Of%20Various%20Types%20Of%20Nanofillers%20Filled%20Crosslinked%20Polyethylene%20Composites%20For%20Cable%20Application.pdf
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spelling	my-usm-ep.466662021-11-17T03:42:13Z Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application 2018-04-01 Lim, Kai Sheng T Technology TA401-492 Materials of engineering and construction. Mechanics of materials This research is to study the effect of nanofillers on mechanical, physical, dielectric and thermal properties of the crosslinked polyethylene (XLPE) matrix. Untreated nanofillers used are zinc oxide (ZnO) and aluminium oxide (Al2O3). Treated nanofillers used are organoclay (OMMT), 3-aminopropyltriethoxysilane treated ZnO (KH550-ZnO), triethoxycaprylylsilane treated ZnO (TCS-ZnO) and aluminic ester treated Al2O3 (AE-Al2O3). XLPE nanocomposites were prepared by melt mixing with a single screw extruder followed by hot press moulding. Different weight percentages (0.5, 1, 1.5 and 2 wt%) were compounded in untreated and treated nanocomposites. Combinations of ZnO/Al2O3 and ZnO/OMMT with different ratios (75/25, 50/50 and 25/75) in total of 1 wt% filler loading were compounded in hybrid nanocomposites. Nanocomposites were tested as per ASTM standard methods and characterized with scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results showed that the addition of untreated and treated nanofillers improved tensile property, burning rate, dielectric property and decomposition temperature. However, it has limited effect on the water resistance property, melting and crystallization temperatures. The optimal filler loading was 1.5 wt% and the effect of Al2O3 is better than ZnO and OMMT nanofillers based on most properties. Surface treatment with coupling agent enhanced the interface between the filler and the matrix with chemical bonding. Strong filler-matrix interaction further improved the properties of composite. The optimal filler loading was 1.5 wt% and the effect of AE-Al2O3 is better than KH550- ZnO and TCS-ZnO nanofillers based on most properties. In hybrid nanocomposites, the best filler ratio was 50/50 in ZnO/Al2O3 and 75/25 in ZnO/OMMT combinations which induced synergistic properties. Overall, AE-Al2O3(1.5)/XLPE nanocomposite has the best results. As compared with the unfilled XLPE, it has led to the significant improvement in tensile strength (59%), elongation at break (51%), Young’s modulus (60%), contact angle (4%), dielectric breakdown strength (35%), volume resistivity (55%), decomposition temperature and reduced burning rate (14%). It is suitable for cable insulation application due to its extraordinary mechanical, physical, dielectric and thermal properties. 2018-04 Thesis http://eprints.usm.my/46666/ http://eprints.usm.my/46666/1/Characterization%20Of%20Various%20Types%20Of%20Nanofillers%20Filled%20Crosslinked%20Polyethylene%20Composites%20For%20Cable%20Application.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Lim, Kai Sheng Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application
description	This research is to study the effect of nanofillers on mechanical, physical, dielectric and thermal properties of the crosslinked polyethylene (XLPE) matrix. Untreated nanofillers used are zinc oxide (ZnO) and aluminium oxide (Al2O3). Treated nanofillers used are organoclay (OMMT), 3-aminopropyltriethoxysilane treated ZnO (KH550-ZnO), triethoxycaprylylsilane treated ZnO (TCS-ZnO) and aluminic ester treated Al2O3 (AE-Al2O3). XLPE nanocomposites were prepared by melt mixing with a single screw extruder followed by hot press moulding. Different weight percentages (0.5, 1, 1.5 and 2 wt%) were compounded in untreated and treated nanocomposites. Combinations of ZnO/Al2O3 and ZnO/OMMT with different ratios (75/25, 50/50 and 25/75) in total of 1 wt% filler loading were compounded in hybrid nanocomposites. Nanocomposites were tested as per ASTM standard methods and characterized with scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results showed that the addition of untreated and treated nanofillers improved tensile property, burning rate, dielectric property and decomposition temperature. However, it has limited effect on the water resistance property, melting and crystallization temperatures. The optimal filler loading was 1.5 wt% and the effect of Al2O3 is better than ZnO and OMMT nanofillers based on most properties. Surface treatment with coupling agent enhanced the interface between the filler and the matrix with chemical bonding. Strong filler-matrix interaction further improved the properties of composite. The optimal filler loading was 1.5 wt% and the effect of AE-Al2O3 is better than KH550- ZnO and TCS-ZnO nanofillers based on most properties. In hybrid nanocomposites, the best filler ratio was 50/50 in ZnO/Al2O3 and 75/25 in ZnO/OMMT combinations which induced synergistic properties. Overall, AE-Al2O3(1.5)/XLPE nanocomposite has the best results. As compared with the unfilled XLPE, it has led to the significant improvement in tensile strength (59%), elongation at break (51%), Young’s modulus (60%), contact angle (4%), dielectric breakdown strength (35%), volume resistivity (55%), decomposition temperature and reduced burning rate (14%). It is suitable for cable insulation application due to its extraordinary mechanical, physical, dielectric and thermal properties.
format	Thesis
qualification_level	Master's degree
author	Lim, Kai Sheng
author_facet	Lim, Kai Sheng
author_sort	Lim, Kai Sheng
title	Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application
title_short	Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application
title_full	Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application
title_fullStr	Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application
title_full_unstemmed	Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application
title_sort	characterization of various types of nanofillers filled crosslinked polyethylene composites for cable application
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2018
url	http://eprints.usm.my/46666/1/Characterization%20Of%20Various%20Types%20Of%20Nanofillers%20Filled%20Crosslinked%20Polyethylene%20Composites%20For%20Cable%20Application.pdf
_version_	1747821708186746880

Characterization Of Various Types Of Nanofillers Filled Crosslinked Polyethylene Composites For Cable Application

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