Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin

Molding is a process to fabricate the compounded rubber to the desired shape and dimensions of the intended product. Rejects attributed to poor hot tear resistance of vulcanized rubber at high temperature vulcanization are of prime concerned, in particular thin and complicated moulded rubber profile...

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Main Author:	Kamarudin, Nor Atiqah
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Rubber industry
Online Access:	https://ir.uitm.edu.my/id/eprint/27195/1/TM_NOR%20ATIQAH%20KAMARUDIN%20AS%2015_5.pdf
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id	my-uitm-ir.27195
record_format	uketd_dc
spelling	my-uitm-ir.271952020-01-13T04:14:30Z Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin 2015 Kamarudin, Nor Atiqah Rubber industry Molding is a process to fabricate the compounded rubber to the desired shape and dimensions of the intended product. Rejects attributed to poor hot tear resistance of vulcanized rubber at high temperature vulcanization are of prime concerned, in particular thin and complicated moulded rubber profiles. The purpose of this study is to investigate the effect of high temperature on tearing energy of vulcanized rubber, the effect of types of filler on tearing energy and the effect of types of crosslink on hot tear resistant. Tearing measurements were done at various different temperatures practiced by the rubber industry. Trouser test-pieces were placed inside an electrically heated oven at the desired test temperature for 15 minutes before applying dead load to determine its critical tearing energy. It was found that strain-crystallizing rubbers showed critical tearing energy, Tc. Above Tc catastrophic tearing occurs. Non-strain-crystallizing rubber shows time dependent tearing where the crack increases in length as a function of time. The magnitude of tearing energy is affected by the extend of strain-crystallization. In the absence of strain-crystallization, the tearing energy is affected by the glass-transition temperature, Tg. The higher the Tg, the higher is the tearing energy. 2015 Thesis https://ir.uitm.edu.my/id/eprint/27195/ https://ir.uitm.edu.my/id/eprint/27195/1/TM_NOR%20ATIQAH%20KAMARUDIN%20AS%2015_5.pdf text en public masters Universiti Teknologi MARA Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Rubber industry
spellingShingle	Rubber industry Kamarudin, Nor Atiqah Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin
description	Molding is a process to fabricate the compounded rubber to the desired shape and dimensions of the intended product. Rejects attributed to poor hot tear resistance of vulcanized rubber at high temperature vulcanization are of prime concerned, in particular thin and complicated moulded rubber profiles. The purpose of this study is to investigate the effect of high temperature on tearing energy of vulcanized rubber, the effect of types of filler on tearing energy and the effect of types of crosslink on hot tear resistant. Tearing measurements were done at various different temperatures practiced by the rubber industry. Trouser test-pieces were placed inside an electrically heated oven at the desired test temperature for 15 minutes before applying dead load to determine its critical tearing energy. It was found that strain-crystallizing rubbers showed critical tearing energy, Tc. Above Tc catastrophic tearing occurs. Non-strain-crystallizing rubber shows time dependent tearing where the crack increases in length as a function of time. The magnitude of tearing energy is affected by the extend of strain-crystallization. In the absence of strain-crystallization, the tearing energy is affected by the glass-transition temperature, Tg. The higher the Tg, the higher is the tearing energy.
format	Thesis
qualification_level	Master's degree
author	Kamarudin, Nor Atiqah
author_facet	Kamarudin, Nor Atiqah
author_sort	Kamarudin, Nor Atiqah
title	Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin
title_short	Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin
title_full	Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin
title_fullStr	Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin
title_full_unstemmed	Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin
title_sort	hot tear resistance of vulcanized rubber / nor atiqah kamarudin
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2015
url	https://ir.uitm.edu.my/id/eprint/27195/1/TM_NOR%20ATIQAH%20KAMARUDIN%20AS%2015_5.pdf
_version_	1783733934403616768

Hot tear resistance of vulcanized rubber / Nor Atiqah Kamarudin

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