Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound

Silane-crosslinked polyethylene (Si-XLPE) compounds are widely used cable insulation materials, cured by water as the crosslinking inducer. Herein, an attempt was made to evaluate the alterations of dynamic mechanical and static mechanical properties of Si-XLPE by increasing the water vapor-triggere...

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Autores principales:	Navid Mostofi Sarkari, Mohsen Mohseni, Morteza Ebrahimi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	XLPE Silane-water Hot set test DMA DSC Tensile testing Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/3ec3abea3aa34081b603a653690602ed
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spelling	oai:doaj.org-article:3ec3abea3aa34081b603a653690602ed2021-11-24T04:24:33ZExamining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound0142-941810.1016/j.polymertesting.2020.106933https://doaj.org/article/3ec3abea3aa34081b603a653690602ed2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941820321620https://doaj.org/toc/0142-9418Silane-crosslinked polyethylene (Si-XLPE) compounds are widely used cable insulation materials, cured by water as the crosslinking inducer. Herein, an attempt was made to evaluate the alterations of dynamic mechanical and static mechanical properties of Si-XLPE by increasing the water vapor-triggered crosslinking duration. The criterion for determining the progress of crosslinking was based on an industrially-used method (hot set test), and results indicated 16 h of vapor exposure as an appropriate duration for approaching maximum attainable crosslinking extent. Progress in crosslinking during this period was confirmed by FTIR spectroscopy. DMA was employed to assess the variations of dynamic mechanical behavior. Extending the crosslinking duration affected the storage modulus noticeably, and decreased it due to adverse effect of crosslinking on crystallinity. DSC confirmed the diminishment of crystallinity owing to the extended crosslinking time. Furthermore, prolonged vapor exposure period impacted β and γ transitions due to the influence of formed crosslinks on the mobility of chains. Tensile testing was carried out to ascertain the static mechanical characteristics of crosslinked samples. Findings demonstrated that tensile strength at yield increased below 5%, and tensile stress at break grew around 17%. Besides, elongation and Young's modulus experienced nonmonotonic changes due to the lengthened crosslinking period.Navid Mostofi SarkariMohsen MohseniMorteza EbrahimiElsevierarticleXLPESilane-waterHot set testDMADSCTensile testingPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106933- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	XLPE Silane-water Hot set test DMA DSC Tensile testing Polymers and polymer manufacture TP1080-1185
spellingShingle	XLPE Silane-water Hot set test DMA DSC Tensile testing Polymers and polymer manufacture TP1080-1185 Navid Mostofi Sarkari Mohsen Mohseni Morteza Ebrahimi Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
description	Silane-crosslinked polyethylene (Si-XLPE) compounds are widely used cable insulation materials, cured by water as the crosslinking inducer. Herein, an attempt was made to evaluate the alterations of dynamic mechanical and static mechanical properties of Si-XLPE by increasing the water vapor-triggered crosslinking duration. The criterion for determining the progress of crosslinking was based on an industrially-used method (hot set test), and results indicated 16 h of vapor exposure as an appropriate duration for approaching maximum attainable crosslinking extent. Progress in crosslinking during this period was confirmed by FTIR spectroscopy. DMA was employed to assess the variations of dynamic mechanical behavior. Extending the crosslinking duration affected the storage modulus noticeably, and decreased it due to adverse effect of crosslinking on crystallinity. DSC confirmed the diminishment of crystallinity owing to the extended crosslinking time. Furthermore, prolonged vapor exposure period impacted β and γ transitions due to the influence of formed crosslinks on the mobility of chains. Tensile testing was carried out to ascertain the static mechanical characteristics of crosslinked samples. Findings demonstrated that tensile strength at yield increased below 5%, and tensile stress at break grew around 17%. Besides, elongation and Young's modulus experienced nonmonotonic changes due to the lengthened crosslinking period.
format	article
author	Navid Mostofi Sarkari Mohsen Mohseni Morteza Ebrahimi
author_facet	Navid Mostofi Sarkari Mohsen Mohseni Morteza Ebrahimi
author_sort	Navid Mostofi Sarkari
title	Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
title_short	Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
title_full	Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
title_fullStr	Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
title_full_unstemmed	Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
title_sort	examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/3ec3abea3aa34081b603a653690602ed
work_keys_str_mv	AT navidmostofisarkari examiningimpactofvaporinducedcrosslinkingdurationondynamicmechanicalandstaticmechanicalcharacteristicsofsilanewatercrosslinkedpolyethylenecompound AT mohsenmohseni examiningimpactofvaporinducedcrosslinkingdurationondynamicmechanicalandstaticmechanicalcharacteristicsofsilanewatercrosslinkedpolyethylenecompound AT mortezaebrahimi examiningimpactofvaporinducedcrosslinkingdurationondynamicmechanicalandstaticmechanicalcharacteristicsofsilanewatercrosslinkedpolyethylenecompound
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Examining impact of vapor-induced crosslinking duration on dynamic mechanical and static mechanical characteristics of silane-water crosslinked polyethylene compound

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