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

Abstract 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 calor...

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Autores principales:	Yuan Li, Guangya Zhu, Kai Zhou, Pengfei Meng, Guodong Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b8fa3c2127084ddaa5b31ee032725793
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spelling	oai:doaj.org-article:b8fa3c2127084ddaa5b31ee0327257932021-12-02T17:24:12ZEvaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications10.1038/s41598-021-97328-x2045-2322https://doaj.org/article/b8fa3c2127084ddaa5b31ee0327257932021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97328-xhttps://doaj.org/toc/2045-2322Abstract 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.Yuan LiGuangya ZhuKai ZhouPengfei MengGuodong WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuan Li Guangya Zhu Kai Zhou Pengfei Meng Guodong Wang Evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
description	Abstract 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.
format	article
author	Yuan Li Guangya Zhu Kai Zhou Pengfei Meng Guodong Wang
author_facet	Yuan Li Guangya Zhu Kai Zhou Pengfei Meng Guodong Wang
author_sort	Yuan Li
title	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_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_sort	evaluation of graphene/crosslinked polyethylene for potential high voltage direct current cable insulation applications
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b8fa3c2127084ddaa5b31ee032725793
work_keys_str_mv	AT yuanli evaluationofgraphenecrosslinkedpolyethyleneforpotentialhighvoltagedirectcurrentcableinsulationapplications AT guangyazhu evaluationofgraphenecrosslinkedpolyethyleneforpotentialhighvoltagedirectcurrentcableinsulationapplications AT kaizhou evaluationofgraphenecrosslinkedpolyethyleneforpotentialhighvoltagedirectcurrentcableinsulationapplications AT pengfeimeng evaluationofgraphenecrosslinkedpolyethyleneforpotentialhighvoltagedirectcurrentcableinsulationapplications AT guodongwang evaluationofgraphenecrosslinkedpolyethyleneforpotentialhighvoltagedirectcurrentcableinsulationapplications
_version_	1718380931823173632

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

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