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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Polymer Testing |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941820321425 |
| _version_ | 1818932651497619456 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-20T04:35:52Z |
| format | Article |
| id | doaj.art-da21c30252504ba7afc3835bf7dfb8b2 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-12-20T04:35:52Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-da21c30252504ba7afc3835bf7dfb8b22022-12-21T19:53:16ZengElsevierPolymer Testing0142-94182021-01-0193106913Thermal oxidation of cross-linked PE and EPR used as insulation materials: Multi-scale correlation over a wide range of temperaturesCamille Blivet0Jean-François Larché1Yaël Israëli2Pierre-Olivier Bussière3Jean-Luc Gardette4Université Clermont-Auvergne-CNRS-SIGMA, Institut de Chimie de Clermont-Ferrand, Campus des Cézeaux, 24 Avenue Blaise Pascal, TSA 60026, CS 60026, 63178, Aubière Cedex, FranceNexans Research Center (NRC), 18 Rue Lortet, 69357, Lyon, France; Corresponding author.Université Clermont-Auvergne-CNRS-SIGMA, Institut de Chimie de Clermont-Ferrand, Campus des Cézeaux, 24 Avenue Blaise Pascal, TSA 60026, CS 60026, 63178, Aubière Cedex, FranceUniversité Clermont-Auvergne-CNRS-SIGMA, Institut de Chimie de Clermont-Ferrand, Campus des Cézeaux, 24 Avenue Blaise Pascal, TSA 60026, CS 60026, 63178, Aubière Cedex, France; Corresponding author. I.C.C.F, UMR 6296 - Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne - CNRS - SIGMA Clermont Campus des Cézeaux - 24, 24 Avenue Blaise Pascal, TSA 60026, CS 60026, 63178, Aubière Cedex, France.Université Clermont-Auvergne-CNRS-SIGMA, Institut de Chimie de Clermont-Ferrand, Campus des Cézeaux, 24 Avenue Blaise Pascal, TSA 60026, CS 60026, 63178, Aubière Cedex, FranceThe 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.http://www.sciencedirect.com/science/article/pii/S0142941820321425PolyethyleneEthylene-propylene copolymerThermo-oxidationMulti-scale correlationArrhenius lawActivation energy |
| spellingShingle | 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 Polymer Testing Polyethylene Ethylene-propylene copolymer Thermo-oxidation Multi-scale correlation Arrhenius law Activation energy |
| title | 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_short | 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 |
| topic | Polyethylene Ethylene-propylene copolymer Thermo-oxidation Multi-scale correlation Arrhenius law Activation energy |
| url | http://www.sciencedirect.com/science/article/pii/S0142941820321425 |
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