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Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications

This paper evaluates the potential usage of graphene/crosslinked polyethylene (graphene/XLPE) as the insulating material for high voltage direct current (HVDC) cables. Thermal, mechanical and electrical properties of blends with/without graphene were evaluated by differential scanning calorimetry (D...

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Detalles Bibliográficos
Autores principales: Li, Yuan, Zhu, Guangya, Zhou, Kai, Meng, Pengfei, Wang, Guodong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8438012/
https://www.ncbi.nlm.nih.gov/pubmed/34518571
http://dx.doi.org/10.1038/s41598-021-97328-x
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author Li, Yuan
Zhu, Guangya
Zhou, Kai
Meng, Pengfei
Wang, Guodong
author_facet Li, Yuan
Zhu, Guangya
Zhou, Kai
Meng, Pengfei
Wang, Guodong
author_sort Li, Yuan
collection PubMed
description This paper evaluates the potential usage of graphene/crosslinked polyethylene (graphene/XLPE) as the insulating material for high voltage direct current (HVDC) cables. Thermal, mechanical and electrical properties of blends with/without graphene were evaluated by differential scanning calorimetry (DSC), tensile strength, DC conductivity, space charge measurements and water tree aging test. The results indicate that 0.007–0.008% weight amount of graphene can improve the mechanical and electrical insulation properties of XLPE blends, namely higher tensile/yield strength, improved space charge distribution, and shorter/fewer water tree branches. The improvements mainly attribute to the high stiffness of graphene, deep traps introduced by the interaction zones of graphene and XLPE, and the blockage effect of graphene within XLPE. For thermal performance of XLPE blends, graphene nano-fillers have but limited improvement. The crystallinity of the blends barely changes with the addition of graphene. However, the crosslinking degree increases as the additive-like amounts of graphene doped. The above findings provide a guide for tailoring lightweight XLPE materials with excellent mechanical and electrical performances by doping them with a small amount of graphene.
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spelling pubmed-84380122021-09-15 Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications Li, Yuan Zhu, Guangya Zhou, Kai Meng, Pengfei Wang, Guodong Sci Rep Article This paper evaluates the potential usage of graphene/crosslinked polyethylene (graphene/XLPE) as the insulating material for high voltage direct current (HVDC) cables. Thermal, mechanical and electrical properties of blends with/without graphene were evaluated by differential scanning calorimetry (DSC), tensile strength, DC conductivity, space charge measurements and water tree aging test. The results indicate that 0.007–0.008% weight amount of graphene can improve the mechanical and electrical insulation properties of XLPE blends, namely higher tensile/yield strength, improved space charge distribution, and shorter/fewer water tree branches. The improvements mainly attribute to the high stiffness of graphene, deep traps introduced by the interaction zones of graphene and XLPE, and the blockage effect of graphene within XLPE. For thermal performance of XLPE blends, graphene nano-fillers have but limited improvement. The crystallinity of the blends barely changes with the addition of graphene. However, the crosslinking degree increases as the additive-like amounts of graphene doped. The above findings provide a guide for tailoring lightweight XLPE materials with excellent mechanical and electrical performances by doping them with a small amount of graphene. Nature Publishing Group UK 2021-09-13 /pmc/articles/PMC8438012/ /pubmed/34518571 http://dx.doi.org/10.1038/s41598-021-97328-x Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Li, Yuan
Zhu, Guangya
Zhou, Kai
Meng, Pengfei
Wang, Guodong
Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
title Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
title_full Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
title_fullStr Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
title_full_unstemmed Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
title_short Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
title_sort evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8438012/
https://www.ncbi.nlm.nih.gov/pubmed/34518571
http://dx.doi.org/10.1038/s41598-021-97328-x
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