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Atmospheric plasma treatment of CFRP composites to enhance structural bonding investigated using surface analytical techniques

Dighton, Chris, Rezai, Amir, Ogin, Stephen L. and Watts, John F. (2019) Atmospheric plasma treatment of CFRP composites to enhance structural bonding investigated using surface analytical techniques International Journal of Adhesion and Adhesives, 91. pp. 142-149.

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Abstract

This paper considers the effects of an atmospheric plasma treatment (APT) on the surface properties of an amine cured carbon fibre/epoxy resin composite, and how those effects manifest over time. In particular, the ability of the APT to remove a thin layer of silicone-containing, proprietary, release agent (Chemlease® 41 EZ), typically used in the production of composite components, has been investigated. It was concluded that the reduction in water contact angle (WCA) after APT for both the solvent wiped and contaminated surfaces was as a result of an increase in oxygen containing species at the surface, as determined through X-ray photoelectron spectroscopy (XPS). Further, it was found that the APT slightly reduced the failure strength of lap shear specimens for solvent wiped surfaces, whereas an increase in failure strength was observed for silicone contaminated samples. WCA and XPS results suggest that the contaminant layer was not removed, but instead transformed to a more stable inorganic form.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Dighton, Chrisc.dighton@surrey.ac.uk
Rezai, Amir
Ogin, Stephen L.S.Ogin@surrey.ac.uk
Watts, John F.J.Watts@surrey.ac.uk
Date : June 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1016/j.ijadhadh.2019.03.010
Copyright Disclaimer : © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Atmospheric plasma treatment; Surface preparation; Contaminant removal; Bonding; Composites; XPS; Lap-shear strength
Depositing User : Clive Harris
Date Deposited : 03 May 2019 08:13
Last Modified : 06 Jul 2019 05:26
URI: http://epubs.surrey.ac.uk/id/eprint/851737

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