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Hygrothermal effects on painted carbon fibre composite surfaces

de Souza, M.L., Mardel, J.I. and Fox, B.L. 2013, Hygrothermal effects on painted carbon fibre composite surfaces, Journal of composite materials, vol. 47, no. 5, pp. 539-547.

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Title Hygrothermal effects on painted carbon fibre composite surfaces
Author(s) de Souza, M.L.
Mardel, J.I.
Fox, B.L.
Journal name Journal of composite materials
Volume number 47
Issue number 5
Start page 539
End page 547
Total pages 9
Publisher Sage
Place of publication Thousand Oaks, Calif.
Publication date 2013
ISSN 0021-9983
1530-793X
Keyword(s) carbon fibre
epoxy
hygrothermal aging
surface finish
distinctness of image
long-term waviness
Summary In this article, the effect of hygrothermal aging on the painted surface finish of unidirectional and fabric carbon fibre composite laminates, with and without surfacing film was investigated. The results highlighted the importance of ensuring that the composite surface directly beneath the paint layer is made from a uniform material with a consistent thickness in order to minimise surface defects from occurring during aging. The surfacing film was found to minimise the print through development on the painted unidirectional and twill composite surfaces. However, the surfacing film layer was found to intermingle with the carbon fibre plies during cure, which resulted in an uneven film thickness that caused increased levels of orange peel. The twill laminate painted surface produced high levels of print through and surface waviness that was caused by the large resin rich regions located within the tow intersections at the surface which enlarged due to thermal expansion and swelling of the matrix with hygrothermal aging. It was also noted that the small resin rich regions between the individual carbon fibres on the unidirectional composite surface were sufficiently large to print through the painted surface.
Language eng
Field of Research 090202 Automotive Engineering Materials
091202 Composite and Hybrid Materials
Socio Economic Objective 880108 Road Public Transport
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051214

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.