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Enhancement of the electrical and thermal properties of unidirectional carbon fibre/epoxy laminates through the addition of graphene oxide

Enhancement of the electrical and thermal properties of unidirectional carbon fibre/epoxy laminates through the addition of graphene oxide
Enhancement of the electrical and thermal properties of unidirectional carbon fibre/epoxy laminates through the addition of graphene oxide
A means of enhancing electrical and thermal conductivities of carbon fibre reinforced polymer (CFRP) composites is investigated for the purpose of reducing damage when electric current and/or heat is introduced into a CFRP structure. The addition of commercially available graphene oxide (GO) nano-flakes dispersed into an epoxy resin is studied; quantities up to 6.3 vol% are used in a vacuum infusion process with carbon fibre fabric to form CFRP laminates. Measurements of the anisotropic electrical and thermal conductivity of the laminate were conducted on CFRP specimens with and without the GO nano-flakes. It is shown that the electrical conductivity in the through-thickness direction increased markedly, reaching values up to 0.18 S/cm, when 6.3 vol% of GO was added into the epoxy, showing a threefold increase compared to the neat CFRP. Similar improvement was also found in the thermal through-thickness conductivity for the same filler content, where the laminate exhibited identical values in both transverse and through-thickness directions. However, the properties transverse to the fibres were not greatly affected by the GO addition. To assess the effect of the GO on the mechanical properties, interlaminar shear strength tests were conducted that showed that the addition of the GO significantly enhanced the through-thickness shear strength.
0022-2461
8955-8970
Senis, Evangelos
dacb2db8-e3cc-444f-8acf-db881eb99a54
Golosnoy, Igor O.
40603f91-7488-49ea-830f-24dd930573d1
Dulieu-Barton, Janice M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Thomsen, Ole T.
f3e60b22-a09f-4d58-90da-d58e37d68047
Senis, Evangelos
dacb2db8-e3cc-444f-8acf-db881eb99a54
Golosnoy, Igor O.
40603f91-7488-49ea-830f-24dd930573d1
Dulieu-Barton, Janice M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Thomsen, Ole T.
f3e60b22-a09f-4d58-90da-d58e37d68047

Senis, Evangelos, Golosnoy, Igor O., Dulieu-Barton, Janice M. and Thomsen, Ole T. (2019) Enhancement of the electrical and thermal properties of unidirectional carbon fibre/epoxy laminates through the addition of graphene oxide. Journal of Materials Science, 54 (12), 8955-8970. (doi:10.1007/s10853-019-03522-8).

Record type: Article

Abstract

A means of enhancing electrical and thermal conductivities of carbon fibre reinforced polymer (CFRP) composites is investigated for the purpose of reducing damage when electric current and/or heat is introduced into a CFRP structure. The addition of commercially available graphene oxide (GO) nano-flakes dispersed into an epoxy resin is studied; quantities up to 6.3 vol% are used in a vacuum infusion process with carbon fibre fabric to form CFRP laminates. Measurements of the anisotropic electrical and thermal conductivity of the laminate were conducted on CFRP specimens with and without the GO nano-flakes. It is shown that the electrical conductivity in the through-thickness direction increased markedly, reaching values up to 0.18 S/cm, when 6.3 vol% of GO was added into the epoxy, showing a threefold increase compared to the neat CFRP. Similar improvement was also found in the thermal through-thickness conductivity for the same filler content, where the laminate exhibited identical values in both transverse and through-thickness directions. However, the properties transverse to the fibres were not greatly affected by the GO addition. To assess the effect of the GO on the mechanical properties, interlaminar shear strength tests were conducted that showed that the addition of the GO significantly enhanced the through-thickness shear strength.

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More information

Accepted/In Press date: 8 March 2019
e-pub ahead of print date: 14 March 2019
Published date: June 2019

Identifiers

Local EPrints ID: 429326
URI: http://eprints.soton.ac.uk/id/eprint/429326
ISSN: 0022-2461
PURE UUID: d40afe25-8e8a-4cd4-9d25-c7765519ce6e
ORCID for Evangelos Senis: ORCID iD orcid.org/0000-0002-7500-2778

Catalogue record

Date deposited: 26 Mar 2019 17:30
Last modified: 17 Dec 2019 01:29

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