Rapid surface activation of carbon fibre reinforced PEEK and PPS composites by high-power UV-irradiation for the adhesive joining of dissimilar materials

Quan, D.; Deegan, Brian; Byrne, Lorcán; Scarselli, Gennaro; Ivanković, Alojz; Murphy, Neal

doi:10.1016/j.compositesa.2020.105976

Rapid surface activation of carbon fibre reinforced PEEK and PPS composites by high-power UV-irradiation for the adhesive joining of dissimilar materials

Title

Rapid surface activation of carbon fibre reinforced PEEK and PPS composites by high-power UV-irradiation for the adhesive joining of dissimilar materials

Author

Quan, D. (TU Delft Structural Integrity & Composites)
Deegan, Brian (Henkel Ireland Operations & Research Ltd.)
Byrne, Lorcán (ENBIO Ltd)
Scarselli, Gennaro (University of Salento)
Ivanković, Alojz (University College Dublin)
Murphy, Neal (University College Dublin)

Date

2020-10

Abstract

Carbon fibre reinforced poly-etherether-ketone (PEEK) and poly-phenylene-sulfide (PPS) composites were rapidly surface-treated by high-power UV light, and then adhesively bonded to aluminium 2024-T3 and carbon fibre/epoxy composites. The results of a single lap-shear joint test demonstrated that a UV-treatment lasting for 5 s was sufficient to prevent joint failure occurring at the composite/adhesive interfaces in all cases, e.g. it increased the failure strength of the PPS composite/aluminium joints from 11.1 MPa to 37.5 MPa. Moreover, the composite/adhesive interfaces performed well upon an exposure of the joints to an environment of high humidity and temperature for 8 weeks. Additionally, an investigation lasting for 6 months showed no degradation of the surface functionalisation from UV-irradiation. Overall, this work highlights high-power UV-irradiation a very promising method for surface preparation of thermoplastic composites (TPCs) for adhesive joining, i.e. TPC adhesive joints with excellent structural integrity can be obtained by using this rapid, eco-friendly and low-cost surface-treatment method.

Subject

B: Strength
E: Joints/joining
E: Surface treatments
Thermoplastic composites

To reference this document use:

http://resolver.tudelft.nl/uuid:8de94b8b-cc2d-409e-9b02-a393ded68e6a

DOI

https://doi.org/10.1016/j.compositesa.2020.105976

ISSN

1359-835X

Source

Composites Part A: Applied Science and Manufacturing, 137

Part of collection

Institutional Repository