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Thermoplastic cable insulation comprising a blend of isotactic polypropylene and a propylene-ethylene copolymer

Thermoplastic cable insulation comprising a blend of isotactic polypropylene and a propylene-ethylene copolymer
Thermoplastic cable insulation comprising a blend of isotactic polypropylene and a propylene-ethylene copolymer
There is much interest in the development of replacement materials for crosslinked polyethylene (XLPE) that are both recyclable (i.e. thermoplastic) and capable of high temperature operation. Thermally, polypropylene is the ideal choice, although its stiffness and low electrical breakdown strength make for a challenging materials design problem. We report here on the compositional optimization of a propylene homopolymer/propylene-ethylene copolymer blend in terms of its dynamic mechanical properties and thin film electrical breakdown strength. The extrusion of a trial mini-cable using the optimized blend is also discussed, which is shown to exhibit a significantly improved electrical performance, as gauged by its DC breakdown strength, than an XLPE-insulated reference.
639-648
Green, C.D.
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Vaughan, A.S.
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Stevens, G.C.
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Pye, A.
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Sutton, S.J.
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Geussens, T.
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Fairhurst, M. J.
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Green, C.D.
d603bd37-e0a5-481f-834a-a5c36a9751f5
Vaughan, A.S.
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Stevens, G.C.
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Pye, A.
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Sutton, S.J.
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Geussens, T.
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Fairhurst, M. J.
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Green, C.D., Vaughan, A.S., Stevens, G.C., Pye, A., Sutton, S.J., Geussens, T. and Fairhurst, M. J. (2015) Thermoplastic cable insulation comprising a blend of isotactic polypropylene and a propylene-ethylene copolymer. IEEE Transactions on Dielectrics and Electrical Insulation, 22 (2), 639-648, [7076758]. (doi:10.1109/TDEI.2015.7076758).

Record type: Article

Abstract

There is much interest in the development of replacement materials for crosslinked polyethylene (XLPE) that are both recyclable (i.e. thermoplastic) and capable of high temperature operation. Thermally, polypropylene is the ideal choice, although its stiffness and low electrical breakdown strength make for a challenging materials design problem. We report here on the compositional optimization of a propylene homopolymer/propylene-ethylene copolymer blend in terms of its dynamic mechanical properties and thin film electrical breakdown strength. The extrusion of a trial mini-cable using the optimized blend is also discussed, which is shown to exhibit a significantly improved electrical performance, as gauged by its DC breakdown strength, than an XLPE-insulated reference.

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Accepted/In Press date: 8 July 2014
e-pub ahead of print date: 9 April 2015
Published date: 9 April 2015
Organisations: EEE

Identifiers

Local EPrints ID: 400912
URI: http://eprints.soton.ac.uk/id/eprint/400912
PURE UUID: d2a11fe5-3f1a-440b-ac84-3e9e9061e1c0
ORCID for A.S. Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

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Date deposited: 30 Sep 2016 08:37
Last modified: 15 Mar 2024 03:06

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Contributors

Author: C.D. Green
Author: A.S. Vaughan ORCID iD
Author: G.C. Stevens
Author: A. Pye
Author: S.J. Sutton
Author: T. Geussens
Author: M. J. Fairhurst

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