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18 August 1997 Influence of the laser process parameters on the efficiency of an excimer laser pretreatment for adhesive bonding of PEEK
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Proceedings Volume 3097, Lasers in Material Processing; (1997) https://doi.org/10.1117/12.281103
Event: Lasers and Optics in Manufacturing III, 1997, Munich, Germany
Abstract
Surface treatment with restricted thermal effects can be achieved using pulsed excimer lasers. Therefore these tools are appropriate to thermally sensitive materials such as polymer. The present work deals with the possibility of using the excimer laser to achieve a prebonding treatment on the PEEK and to study the influence of the wavelength on the efficiency of the treatment in terms of bonded joint strength. Regarding the mechanical test results, it appears that the adhesive properties of the polymer are mainly dependent on the laser wavelength. Without any pretreatment, the bonded joint strength does not exceed 5 J/m2 and the failure occurs at the interface between the PEEK and the adhesive. After a 193 nm irradiation, below or above the ablation threshold, a cohesive failure in the adhesive at 700 J/m2 is obtained whereas at 248 nm the laser treatment leads to an adhesive failure at the PEEK-adhesive interface at 330 J/m2. In order to understand why the wavelength have such a strong influence on the adhesive properties, the modifications induced on the surface after treatment are investigated.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Benedicte Sadras, Patricia Laurens, F. Decobert, F. Arefi, and Jacques Amouroux "Influence of the laser process parameters on the efficiency of an excimer laser pretreatment for adhesive bonding of PEEK", Proc. SPIE 3097, Lasers in Material Processing, (18 August 1997); https://doi.org/10.1117/12.281103
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