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Effect of ground electrode on charge injection and surface potential of corona charged polyethylene film

Effect of ground electrode on charge injection and surface potential of corona charged polyethylene film
Effect of ground electrode on charge injection and surface potential of corona charged polyethylene film
The surface potential decay measurement is a simple and low cost tool to assess electrical properties of insulation materials; therefore, understanding the physical mechanisms of the surface potential decay becomes necessary. With our recent space charge measurement results on corona charged samples, bipolar charge injection on corona charged samples had been observed. Based on this new fact, it is anticipated that the ground electrode should have significant effect during corona charging and subsequently decay processes. In the paper, low density polyethylene (LDPE) film with gold ground electrode was compared with LDPE film with aluminium ground to study effect of ground electrode on charge injection and surface potential decay processes. Charging current during the corona charging, surface potential decay and space charge dynamics after corona charging in the samples with either gold coated or aluminium ground electrode were measured. Differences have been observed for gold ground electrode when compared with aluminium ground electrode. Higher work function of gold electrode is responsible for the observed differences. A preliminary simulation has also attempted to show that the bipolar injection may take place in corona charged LDPE films.
0304-3886
139-146
Zhuang, Yuan
fd738637-e5e3-4c0a-ad8e-e011ab0b1314
Hao, Miao
181e8cd2-9050-412f-8234-6aa0ecec23f2
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Chen, Xin
927cf7ef-386c-42b5-aac4-c35836675619
Zhang, Chong
77caa4ba-ea19-4fa6-b92e-b77dc6e00b81
Li, Wenpeng
e2596a0a-cf53-441f-a95f-fb2cd41c7be0
Wang, Haitian
7f867657-bb51-48a8-ad1a-98241c1d02b9
Zhou, Mingyu
964c43a7-3a1e-4b39-9008-1d3bd29ac82f
Lei, Xianzhang
5fb22438-77e5-48d1-9851-b2109286504c
Zhuang, Yuan
fd738637-e5e3-4c0a-ad8e-e011ab0b1314
Hao, Miao
181e8cd2-9050-412f-8234-6aa0ecec23f2
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Chen, Xin
927cf7ef-386c-42b5-aac4-c35836675619
Zhang, Chong
77caa4ba-ea19-4fa6-b92e-b77dc6e00b81
Li, Wenpeng
e2596a0a-cf53-441f-a95f-fb2cd41c7be0
Wang, Haitian
7f867657-bb51-48a8-ad1a-98241c1d02b9
Zhou, Mingyu
964c43a7-3a1e-4b39-9008-1d3bd29ac82f
Lei, Xianzhang
5fb22438-77e5-48d1-9851-b2109286504c

Zhuang, Yuan, Hao, Miao, Chen, George, Chen, Xin, Zhang, Chong, Li, Wenpeng, Wang, Haitian, Zhou, Mingyu and Lei, Xianzhang (2017) Effect of ground electrode on charge injection and surface potential of corona charged polyethylene film. Journal of Electrostatics, 90, 139-146. (doi:10.1016/j.elstat.2017.10.004).

Record type: Article

Abstract

The surface potential decay measurement is a simple and low cost tool to assess electrical properties of insulation materials; therefore, understanding the physical mechanisms of the surface potential decay becomes necessary. With our recent space charge measurement results on corona charged samples, bipolar charge injection on corona charged samples had been observed. Based on this new fact, it is anticipated that the ground electrode should have significant effect during corona charging and subsequently decay processes. In the paper, low density polyethylene (LDPE) film with gold ground electrode was compared with LDPE film with aluminium ground to study effect of ground electrode on charge injection and surface potential decay processes. Charging current during the corona charging, surface potential decay and space charge dynamics after corona charging in the samples with either gold coated or aluminium ground electrode were measured. Differences have been observed for gold ground electrode when compared with aluminium ground electrode. Higher work function of gold electrode is responsible for the observed differences. A preliminary simulation has also attempted to show that the bipolar injection may take place in corona charged LDPE films.

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Accepted/In Press date: 20 October 2017
e-pub ahead of print date: 12 November 2017
Published date: December 2017

Identifiers

Local EPrints ID: 416146
URI: http://eprints.soton.ac.uk/id/eprint/416146
ISSN: 0304-3886
PURE UUID: e2a1b759-e0b5-4f04-8c1f-b67c03538772

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Date deposited: 06 Dec 2017 17:30
Last modified: 07 Oct 2020 04:13

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Contributors

Author: Yuan Zhuang
Author: Miao Hao
Author: George Chen
Author: Xin Chen
Author: Chong Zhang
Author: Wenpeng Li
Author: Haitian Wang
Author: Mingyu Zhou
Author: Xianzhang Lei

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