Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar

The paper describes the polarization current characteristics of filler added natural rubber. There are many parameters that can be employed for predicting the insulation properties and the charging and discharging is one of them. One of the ways to observe the charging and discharging activities is...

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Main Author:	Omar, Mohd Hasrul Naim
Format:	Thesis
Language:	English
Published:	2007
Online Access:	https://ir.uitm.edu.my/id/eprint/84617/1/84617.pdf
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id	my-uitm-ir.84617
record_format	uketd_dc
spelling	my-uitm-ir.846172024-02-19T07:10:48Z Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar 2007 Omar, Mohd Hasrul Naim The paper describes the polarization current characteristics of filler added natural rubber. There are many parameters that can be employed for predicting the insulation properties and the charging and discharging is one of them. One of the ways to observe the charging and discharging activities is by measuring the polarization and depolarization currents. In this study, samples of natural rubber filled with varying amount of fillers were moulded and measurement will be focused on their polarization current, which is through their charging processes. The measurement of the samples is conducted by the use of Keithley 6517A Electrometer, which is interfaced to and controlled by a personal computer via a computer program using the TestPoint™ Software. The samples are placed on a specially designed test jig. The polarization current process is set for 5 minutes (300 sec) with 500 V DC injected between the terminals of the test jig. Fillers of three types namely, French Chalk, China Clay and Carbon Black, were added in varying amount to the natural rubber. Natural rubber with French Clay, China Clay and Carbon Black used as a sample because the cost are cheaper, easy to get locally and compatible in production as a samples. For all the samples, certain chemicals have to be added to ensure proper vulcanisation and long lasting, and they are Zinc Oxide, Stearic Acid, Ozone Wax, Colour (Green), Sulphur, MBTS and Nonox CNS, which act as additives, ozone wax, colour, vulcanizes agent, accelerator, and antioxidant agent, respectively. For the case of French Chalks and China Clay, it is found that filler amount of 30 phr or less proved to improve the insulating properties of natural rubber. This is evident from the magnitudes of the polarization current. For the case of Carbon Black as filler, it is found that any amount of more that 10 phr increases the material's conductivity and this is also evident from the polarization current magnitudes. 2007 Thesis https://ir.uitm.edu.my/id/eprint/84617/ https://ir.uitm.edu.my/id/eprint/84617/1/84617.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Hamzah, Ngah Ramzi
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Hamzah, Ngah Ramzi
description	The paper describes the polarization current characteristics of filler added natural rubber. There are many parameters that can be employed for predicting the insulation properties and the charging and discharging is one of them. One of the ways to observe the charging and discharging activities is by measuring the polarization and depolarization currents. In this study, samples of natural rubber filled with varying amount of fillers were moulded and measurement will be focused on their polarization current, which is through their charging processes. The measurement of the samples is conducted by the use of Keithley 6517A Electrometer, which is interfaced to and controlled by a personal computer via a computer program using the TestPoint™ Software. The samples are placed on a specially designed test jig. The polarization current process is set for 5 minutes (300 sec) with 500 V DC injected between the terminals of the test jig. Fillers of three types namely, French Chalk, China Clay and Carbon Black, were added in varying amount to the natural rubber. Natural rubber with French Clay, China Clay and Carbon Black used as a sample because the cost are cheaper, easy to get locally and compatible in production as a samples. For all the samples, certain chemicals have to be added to ensure proper vulcanisation and long lasting, and they are Zinc Oxide, Stearic Acid, Ozone Wax, Colour (Green), Sulphur, MBTS and Nonox CNS, which act as additives, ozone wax, colour, vulcanizes agent, accelerator, and antioxidant agent, respectively. For the case of French Chalks and China Clay, it is found that filler amount of 30 phr or less proved to improve the insulating properties of natural rubber. This is evident from the magnitudes of the polarization current. For the case of Carbon Black as filler, it is found that any amount of more that 10 phr increases the material's conductivity and this is also evident from the polarization current magnitudes.
format	Thesis
qualification_level	Bachelor degree
author	Omar, Mohd Hasrul Naim
spellingShingle	Omar, Mohd Hasrul Naim Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar
author_facet	Omar, Mohd Hasrul Naim
author_sort	Omar, Mohd Hasrul Naim
title	Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar
title_short	Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar
title_full	Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar
title_fullStr	Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar
title_full_unstemmed	Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar
title_sort	improvement of the study on polarization current of filler added natural rubber / mohd hasrul naim omar
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2007
url	https://ir.uitm.edu.my/id/eprint/84617/1/84617.pdf
_version_	1794192031630753792

Improvement of the study on polarization current of filler added natural rubber / Mohd Hasrul Naim Omar

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