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DC current in nanosilica-based polyethylene nanocomposites

DC current in nanosilica-based polyethylene nanocomposites
DC current in nanosilica-based polyethylene nanocomposites
In the present paper, DC current of polyethylene nanocomposites containing different nanosilica loading ratios, either the untreated or the surface treated using the trimethoxy(propyl)silane coupling agent has been investigated. TGA was used to identify the true loading concentration in the samples and the nanofillers dispersion was studied using SEM. A range of electric field from 10 kV/mm to 50 kV/mm were applied It has been found that two dynamic processes are involved in the current observed over a period of 3 hours. The initial process was dominated by trap filling where a decreasing current versus time was observed. The second process was related to the transient space charge limited current in the unfilled sample but taken over by the effect of nanofillers that shows a continuous current increase versus time rather than peaking. The exact mechanism responsible for the increasing current is not known yet. The influence of surface treatment of the nanofillers on the current is significant, resulting in a lower current comparing with the untreated samples. A current dip has been observed for samples with lower loading concentration, supporting the deep trap concept.
978 - 1 - 4673 - 7498 - 9
515-518
IEEE
Wang, Yan
f64021d0-1658-417b-93a7-b59055bd76f9
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Wang, Yan
f64021d0-1658-417b-93a7-b59055bd76f9
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3

Wang, Yan, Xu, Zhiqiang, Chen, George and Vaughan, Alun (2015) DC current in nanosilica-based polyethylene nanocomposites. In 2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP). IEEE. pp. 515-518 . (doi:10.1109/CEIDP.2015.7352137).

Record type: Conference or Workshop Item (Paper)

Abstract

In the present paper, DC current of polyethylene nanocomposites containing different nanosilica loading ratios, either the untreated or the surface treated using the trimethoxy(propyl)silane coupling agent has been investigated. TGA was used to identify the true loading concentration in the samples and the nanofillers dispersion was studied using SEM. A range of electric field from 10 kV/mm to 50 kV/mm were applied It has been found that two dynamic processes are involved in the current observed over a period of 3 hours. The initial process was dominated by trap filling where a decreasing current versus time was observed. The second process was related to the transient space charge limited current in the unfilled sample but taken over by the effect of nanofillers that shows a continuous current increase versus time rather than peaking. The exact mechanism responsible for the increasing current is not known yet. The influence of surface treatment of the nanofillers on the current is significant, resulting in a lower current comparing with the untreated samples. A current dip has been observed for samples with lower loading concentration, supporting the deep trap concept.

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Published date: 18 October 2015
Venue - Dates: 2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena, United States, 2015-10-17 - 2015-10-20
Organisations: EEE

Identifiers

Local EPrints ID: 383637
URI: http://eprints.soton.ac.uk/id/eprint/383637
ISBN: 978 - 1 - 4673 - 7498 - 9
PURE UUID: 189052f2-b262-4ac9-8b73-5c59f7685c71
ORCID for Zhiqiang Xu: ORCID iD orcid.org/0000-0002-6640-7335
ORCID for Alun Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

Catalogue record

Date deposited: 19 Nov 2015 09:27
Last modified: 18 Feb 2021 17:14

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Contributors

Author: Yan Wang
Author: Zhiqiang Xu ORCID iD
Author: George Chen
Author: Alun Vaughan ORCID iD

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