Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites

The aims of this research were firstly, to investigate the effect of bentonite (Bt) loading, secondly, the partial replacement of Bt by calcium carbonate (CaCO3), thirdly, the modification of Bt by bis (3-triethoxysilylpropyl) tetrasulfide (Si69) and the last one, the effect of blend ratio of ethyle...

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Main Author:	Mat, Nurus Sakinah Che
Format:	Thesis
Language:	English
Published:	2018
Subjects:	T Technology
Online Access:	http://eprints.usm.my/46689/1/Curing%2C%20Mechanical%20And%20Aging%20Properties%20Of%20Bentonite%20Filled%20Ethylene%20Propylene%20Diene%20Monomer%20Composites.pdf
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spelling	my-usm-ep.466892021-11-17T03:42:13Z Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites 2018-06-01 Mat, Nurus Sakinah Che T Technology TA401-492 Materials of engineering and construction. Mechanics of materials The aims of this research were firstly, to investigate the effect of bentonite (Bt) loading, secondly, the partial replacement of Bt by calcium carbonate (CaCO3), thirdly, the modification of Bt by bis (3-triethoxysilylpropyl) tetrasulfide (Si69) and the last one, the effect of blend ratio of ethylene propylene diene monomer (EPDM)/ natural rubber (NR) on the curing characteristics, tear and aging properties as well as fatigue life of bentonite filled EPDM composites. EPDM/Bt composites were prepared by two roll mills and vulcanized at 1500C. The curing characteristics of the composites were investigated by using rheometer and mechanical properties were determined by using Instron and fatigue-to-failure test machine. It was found that addition of Bt decreased scorch time (ts2) and increased optimum cure time (t90), maximum torque (MH) and minimum torque (ML) of EPDM/Bt composites. Tear strength and aging property (based on retention percentage) improved up to 90 phr and 70 phr Bt, respectively but fatigue life of EPDM/Bt composites decreased. The partial replacement of Bt by CaCO3 decreased ML and increased ts2, t90, and MH. The tear strength and fatigue life decreased but aging property increased with increasing of CaCO3 in Bt/CaCO3 ratio loading of EPDM/Bt/CaCO3 composites. As EPDM/Bt composites were modified with bis (3-triethoxysilylpropyl) tetrasulfide (Si69), ts2 was slightly increased meanwhile t90 decreased. Both MH and ML were found increased up to 0.5 phr Si69. The aging property of EPDM/Bt composites increased with increasing Si69. The tear strength and fatigue life of EPDM/Bt composites increased up to 0.5 phr Si69. Increasing NR in blend ratio of EPDM/NR decreased ts2, t90 and ML while increased MH of EPDM/NR/Bt composites. The tear strength and fatigue life increased but aging property decreased as NR increased in EPDM/NR blend ratio of EPDM/NR/Bt composites. 2018-06 Thesis http://eprints.usm.my/46689/ http://eprints.usm.my/46689/1/Curing%2C%20Mechanical%20And%20Aging%20Properties%20Of%20Bentonite%20Filled%20Ethylene%20Propylene%20Diene%20Monomer%20Composites.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 Mat, Nurus Sakinah Che Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites
description	The aims of this research were firstly, to investigate the effect of bentonite (Bt) loading, secondly, the partial replacement of Bt by calcium carbonate (CaCO3), thirdly, the modification of Bt by bis (3-triethoxysilylpropyl) tetrasulfide (Si69) and the last one, the effect of blend ratio of ethylene propylene diene monomer (EPDM)/ natural rubber (NR) on the curing characteristics, tear and aging properties as well as fatigue life of bentonite filled EPDM composites. EPDM/Bt composites were prepared by two roll mills and vulcanized at 1500C. The curing characteristics of the composites were investigated by using rheometer and mechanical properties were determined by using Instron and fatigue-to-failure test machine. It was found that addition of Bt decreased scorch time (ts2) and increased optimum cure time (t90), maximum torque (MH) and minimum torque (ML) of EPDM/Bt composites. Tear strength and aging property (based on retention percentage) improved up to 90 phr and 70 phr Bt, respectively but fatigue life of EPDM/Bt composites decreased. The partial replacement of Bt by CaCO3 decreased ML and increased ts2, t90, and MH. The tear strength and fatigue life decreased but aging property increased with increasing of CaCO3 in Bt/CaCO3 ratio loading of EPDM/Bt/CaCO3 composites. As EPDM/Bt composites were modified with bis (3-triethoxysilylpropyl) tetrasulfide (Si69), ts2 was slightly increased meanwhile t90 decreased. Both MH and ML were found increased up to 0.5 phr Si69. The aging property of EPDM/Bt composites increased with increasing Si69. The tear strength and fatigue life of EPDM/Bt composites increased up to 0.5 phr Si69. Increasing NR in blend ratio of EPDM/NR decreased ts2, t90 and ML while increased MH of EPDM/NR/Bt composites. The tear strength and fatigue life increased but aging property decreased as NR increased in EPDM/NR blend ratio of EPDM/NR/Bt composites.
format	Thesis
qualification_level	Master's degree
author	Mat, Nurus Sakinah Che
author_facet	Mat, Nurus Sakinah Che
author_sort	Mat, Nurus Sakinah Che
title	Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites
title_short	Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites
title_full	Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites
title_fullStr	Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites
title_full_unstemmed	Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites
title_sort	curing, mechanical and aging properties of bentonite filled ethylene propylene diene monomer composites
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2018
url	http://eprints.usm.my/46689/1/Curing%2C%20Mechanical%20And%20Aging%20Properties%20Of%20Bentonite%20Filled%20Ethylene%20Propylene%20Diene%20Monomer%20Composites.pdf
_version_	1747821713080451072

Curing, Mechanical And Aging Properties Of Bentonite Filled Ethylene Propylene Diene Monomer Composites

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