Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures

The thermo-oxidation (70–160 °C) of two polymeric materials widely used as electrical insulators in cable systems was studied. The polymers are cross-linked polyethylene (XLPE) and cross-linked ethylene propylene rubber (XLEPR). Characterisation of the aged materials was performed by using FTIR spec...

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Autores principales:	Camille Blivet, Jean-François Larché, Yaël Israëli, Pierre-Olivier Bussière, Jean-Luc Gardette
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Polyethylene Ethylene-propylene copolymer Thermo-oxidation Multi-scale correlation Arrhenius law Activation energy Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/da21c30252504ba7afc3835bf7dfb8b2
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spelling	oai:doaj.org-article:da21c30252504ba7afc3835bf7dfb8b22021-11-24T04:24:11ZThermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures0142-941810.1016/j.polymertesting.2020.106913https://doaj.org/article/da21c30252504ba7afc3835bf7dfb8b22021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941820321425https://doaj.org/toc/0142-9418The thermo-oxidation (70–160 °C) of two polymeric materials widely used as electrical insulators in cable systems was studied. The polymers are cross-linked polyethylene (XLPE) and cross-linked ethylene propylene rubber (XLEPR). Characterisation of the aged materials was performed by using FTIR spectroscopy, gel fraction, differential scanning calorimetry and tensile tests. Correlations were observed between the formation of oxidation products, the changes in crystallinity, the variation in gel content and the reduction in mechanical properties in both materials. By using a classical Arrhenius methodology, activation energies of XLPE and XLEPR were calculated in the temperature range 70–160 °C from spectroscopic measurements on 200 μm thick films and from tensile test results on 1 mm thick samples: the average values are 103 kJ mol−1 for XLPE and 102 kJ mol−1 for XLEPR. The results were consistent despite a diffusion-limited oxidation (DLO) effect observed in the 1 mm thick samples.Camille BlivetJean-François LarchéYaël IsraëliPierre-Olivier BussièreJean-Luc GardetteElsevierarticlePolyethyleneEthylene-propylene copolymerThermo-oxidationMulti-scale correlationArrhenius lawActivation energyPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106913- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Polyethylene Ethylene-propylene copolymer Thermo-oxidation Multi-scale correlation Arrhenius law Activation energy Polymers and polymer manufacture TP1080-1185
spellingShingle	Polyethylene Ethylene-propylene copolymer Thermo-oxidation Multi-scale correlation Arrhenius law Activation energy Polymers and polymer manufacture TP1080-1185 Camille Blivet Jean-François Larché Yaël Israëli Pierre-Olivier Bussière Jean-Luc Gardette Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures
description	The thermo-oxidation (70–160 °C) of two polymeric materials widely used as electrical insulators in cable systems was studied. The polymers are cross-linked polyethylene (XLPE) and cross-linked ethylene propylene rubber (XLEPR). Characterisation of the aged materials was performed by using FTIR spectroscopy, gel fraction, differential scanning calorimetry and tensile tests. Correlations were observed between the formation of oxidation products, the changes in crystallinity, the variation in gel content and the reduction in mechanical properties in both materials. By using a classical Arrhenius methodology, activation energies of XLPE and XLEPR were calculated in the temperature range 70–160 °C from spectroscopic measurements on 200 μm thick films and from tensile test results on 1 mm thick samples: the average values are 103 kJ mol−1 for XLPE and 102 kJ mol−1 for XLEPR. The results were consistent despite a diffusion-limited oxidation (DLO) effect observed in the 1 mm thick samples.
format	article
author	Camille Blivet Jean-François Larché Yaël Israëli Pierre-Olivier Bussière Jean-Luc Gardette
author_facet	Camille Blivet Jean-François Larché Yaël Israëli Pierre-Olivier Bussière Jean-Luc Gardette
author_sort	Camille Blivet
title	Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures
title_short	Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures
title_full	Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures
title_fullStr	Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures
title_full_unstemmed	Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures
title_sort	thermal oxidation of cross-linked pe and epr used as insulation materials: multi-scale correlation over a wide range of temperatures
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/da21c30252504ba7afc3835bf7dfb8b2
work_keys_str_mv	AT camilleblivet thermaloxidationofcrosslinkedpeandeprusedasinsulationmaterialsmultiscalecorrelationoverawiderangeoftemperatures AT jeanfrancoislarche thermaloxidationofcrosslinkedpeandeprusedasinsulationmaterialsmultiscalecorrelationoverawiderangeoftemperatures AT yaelisraeli thermaloxidationofcrosslinkedpeandeprusedasinsulationmaterialsmultiscalecorrelationoverawiderangeoftemperatures AT pierreolivierbussiere thermaloxidationofcrosslinkedpeandeprusedasinsulationmaterialsmultiscalecorrelationoverawiderangeoftemperatures AT jeanlucgardette thermaloxidationofcrosslinkedpeandeprusedasinsulationmaterialsmultiscalecorrelationoverawiderangeoftemperatures
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Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperatures

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