Adhesion Improvement of Thermoplastics-Based Composites by Atmospheric Plasma and UV Treatments
| Autor: | Brian Deegan, Neal Murphy, Gennaro Scarselli, Dong Quan, Denis P. Dowling, Alojz Ivankovic |
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| Přispěvatelé: | Scarselli, G., Quan, D., Murphy, N., Deegan, B., Dowling, D., Ivankovic, A. |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Adhesive bonding UV treatment 02 engineering and technology 01 natural sciences Contact angle chemistry.chemical_compound 0103 physical sciences Peek Shear strength Thermoplastics Thermoplastic Atmospheric plasma treatment Composite material 010302 applied physics Epoxy 021001 nanoscience & nanotechnology Polyetherimide Lap joint chemistry visual_art Adhesion Ceramics and Composites visual_art.visual_art_medium Adhesive 0210 nano-technology |
| Zdroj: | Applied Composite Materials: an international journal for the science and application of composite materials, 28(1) |
| ISSN: | 1573-4897 0929-189X |
| DOI: | 10.1007/s10443-020-09854-y |
| Popis: | The present work is concerned with adhesive bonding of thermoplastic composites used in general aerospace applications, including polyphenylene sulfide (PPS), polyetherimide (PEI) and polyetheretherketone (PEEK) carbon fibre composites. Three different surface treatments have been applied to the PEEK, PPS and PEI-based composites in order to enhance the adhesion: atmospheric plasma, ultraviolet radiation (UV) and isopropanol wiping as a control. Water contact angles and free surface energies were measured following the standard experimental procedure based on the employment of three different liquid droplets. Infrared spectroscopy and X-ray photoelectron spectroscopy (XPS) were subsequently performed to characterize the surface chemistry of the samples after treatment. The single lap joints were manufactured and bonded by an Aerospace grade epoxy-based film adhesive originally developed for use on metals but with the ability to bond treated thermoplastics to good strength (supplied by Henkel Ireland). Quasi-static (QS) tests were conducted. The lap shear strength was evaluated, and the failure mechanisms of the different joints were examined for the range of surface treatments considered. It was found that the performances of the PEEK and PPS joints were considerably improved by the plasma and UV treatments resulting in cohesive and delamination failures, while PEI was unaffected by the plasma and UV treatments and performed very well throughout. |
| Databáze: | OpenAIRE |
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