Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)

Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)

The use of polyethylene in sliding systems for automotive industry requires adequate mechanical properties, such as high wear resistance, besides good processing properties in conventional extrusion processes. Aiming to fulfill these requirements, crosslinks were introduced in a high molecular weight polyethylene (HMWPE) grade through a process involving grafting of vinyltrimethoxysilane (VTMOS) onto the polymer chain, promoted by dicumyl peroxide (DCP). The results obtained showed that the introduction of crosslinks improved the wear resistance of HMWPE. However, the HMWPE crosslinking led to a significant decrease in the Young’s Modulus, as a result of the reduction in crystallinity or the heterogeneous structure of the crosslinked samples. The tensile strength and the thermal properties were not affected.

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Main Authors: Rocha,Marisa Cristina Guimarães, Moraes,Lorena Rodrigues da Costa, Cella,Norberto
Format: Digital revista
Language:English
Published: ABM, ABC, ABPol 2017
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501332
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spelling oai:scielo:S1516-143920170005013322017-10-06Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)Rocha,Marisa Cristina GuimarãesMoraes,Lorena Rodrigues da CostaCella,Norberto high molecular weight polyethylene mechanical properties thermal properties wear resistance The use of polyethylene in sliding systems for automotive industry requires adequate mechanical properties, such as high wear resistance, besides good processing properties in conventional extrusion processes. Aiming to fulfill these requirements, crosslinks were introduced in a high molecular weight polyethylene (HMWPE) grade through a process involving grafting of vinyltrimethoxysilane (VTMOS) onto the polymer chain, promoted by dicumyl peroxide (DCP). The results obtained showed that the introduction of crosslinks improved the wear resistance of HMWPE. However, the HMWPE crosslinking led to a significant decrease in the Young’s Modulus, as a result of the reduction in crystallinity or the heterogeneous structure of the crosslinked samples. The tensile strength and the thermal properties were not affected.info:eu-repo/semantics/openAccessABM, ABC, ABPolMaterials Research v.20 n.5 20172017-10-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501332en10.1590/1980-5373-mr-2016-0552
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Rocha,Marisa Cristina Guimarães
Moraes,Lorena Rodrigues da Costa
Cella,Norberto
spellingShingle Rocha,Marisa Cristina Guimarães
Moraes,Lorena Rodrigues da Costa
Cella,Norberto
Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)
author_facet Rocha,Marisa Cristina Guimarães
Moraes,Lorena Rodrigues da Costa
Cella,Norberto
author_sort Rocha,Marisa Cristina Guimarães
title Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)
title_short Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)
title_full Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)
title_fullStr Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)
title_full_unstemmed Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)
title_sort thermal and mechanical properties of vinyltrimethoxysilane (vtmos) crosslinked high molecular weight polyethylene (hmwpe)
description The use of polyethylene in sliding systems for automotive industry requires adequate mechanical properties, such as high wear resistance, besides good processing properties in conventional extrusion processes. Aiming to fulfill these requirements, crosslinks were introduced in a high molecular weight polyethylene (HMWPE) grade through a process involving grafting of vinyltrimethoxysilane (VTMOS) onto the polymer chain, promoted by dicumyl peroxide (DCP). The results obtained showed that the introduction of crosslinks improved the wear resistance of HMWPE. However, the HMWPE crosslinking led to a significant decrease in the Young’s Modulus, as a result of the reduction in crystallinity or the heterogeneous structure of the crosslinked samples. The tensile strength and the thermal properties were not affected.
publisher ABM, ABC, ABPol
publishDate 2017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501332
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AT moraeslorenarodriguesdacosta thermalandmechanicalpropertiesofvinyltrimethoxysilanevtmoscrosslinkedhighmolecularweightpolyethylenehmwpe
AT cellanorberto thermalandmechanicalpropertiesofvinyltrimethoxysilanevtmoscrosslinkedhighmolecularweightpolyethylenehmwpe
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