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Investigation of plasma-enhanced-fluorination treatment on epoxy resins for high-voltage DC applications

Investigation of plasma-enhanced-fluorination treatment on epoxy resins for high-voltage DC applications
Investigation of plasma-enhanced-fluorination treatment on epoxy resins for high-voltage DC applications
Charge build-up under high voltage DC is a significant concern in the transmission system as its presence may distort the local electric field. By chemically treat polymeric insulation via plasma-enhanced-fluorination (PEF) treatment, the charge transport characteristics of the material can be modified. In doing so, excellent surface properties similar to those of fluoropolymers can be attained without compromising the bulk properties of the original polymeric insulation. The change in chemical components at the surface of polymeric insulation should lead to a corresponding change in dielectric properties at the surface and consequently may suppress the occurrences of charge build up. In this paper, the performance of plasma-treated epoxy resins was investigated in term of its dielectric performances, and valid comparison is made between PEF and direct-fluorination treatment from author’s previous work. The tests
include surface current measurement and surface flashover performances using a pair of finger electrodes. The effect of moisture absorption on the treated surface was also discussed and proved to be the limiting factor in the improvement of dielectric properties of fluorination treatment. This research proved that the introduction of the fluorinated surface layer on epoxy resins does play a major role in improving the surface dielectric properties for the use as insulation spacer in high voltage DC GIS systems.
epoxy resin insulator, surface flashover, Plasma, fluorination, surface charge accumulation, DC conductivity, moisture effect
3786 - 3793
Mohamad, Azwadi
da455387-212f-44a7-95a5-69f694227ebb
Chen, Guanghui
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Chen, Qiang
a88fd46c-3f0c-41a8-99cb-2000f2137e2e
Mohamad, Azwadi
da455387-212f-44a7-95a5-69f694227ebb
Chen, Guanghui
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Chen, Qiang
a88fd46c-3f0c-41a8-99cb-2000f2137e2e

Mohamad, Azwadi, Chen, Guanghui and Chen, Qiang (2017) Investigation of plasma-enhanced-fluorination treatment on epoxy resins for high-voltage DC applications. IEEE Transactions on Dielectrics and Electrical Insulation, 24 (6), 3786 - 3793. (doi:10.1109/TDEI.2017.006767).

Record type: Article

Abstract

Charge build-up under high voltage DC is a significant concern in the transmission system as its presence may distort the local electric field. By chemically treat polymeric insulation via plasma-enhanced-fluorination (PEF) treatment, the charge transport characteristics of the material can be modified. In doing so, excellent surface properties similar to those of fluoropolymers can be attained without compromising the bulk properties of the original polymeric insulation. The change in chemical components at the surface of polymeric insulation should lead to a corresponding change in dielectric properties at the surface and consequently may suppress the occurrences of charge build up. In this paper, the performance of plasma-treated epoxy resins was investigated in term of its dielectric performances, and valid comparison is made between PEF and direct-fluorination treatment from author’s previous work. The tests
include surface current measurement and surface flashover performances using a pair of finger electrodes. The effect of moisture absorption on the treated surface was also discussed and proved to be the limiting factor in the improvement of dielectric properties of fluorination treatment. This research proved that the introduction of the fluorinated surface layer on epoxy resins does play a major role in improving the surface dielectric properties for the use as insulation spacer in high voltage DC GIS systems.

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More information

Accepted/In Press date: 24 September 2017
e-pub ahead of print date: 31 December 2017
Published date: December 2017
Keywords: epoxy resin insulator, surface flashover, Plasma, fluorination, surface charge accumulation, DC conductivity, moisture effect

Identifiers

Local EPrints ID: 419157
URI: http://eprints.soton.ac.uk/id/eprint/419157
PURE UUID: ec167d24-dbaf-42aa-b8ae-cfd7243608c5

Catalogue record

Date deposited: 06 Apr 2018 16:30
Last modified: 06 Oct 2020 20:48

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