The high quality and the relevance of Lucie’s thesis contributed to get significant results as a part of SURFINNOV project.
About this thesis
This study provides some insight into the effects of process parameters (device power, distance between nozzle and substrate, etc) on adhesion improvement. Mechanisms which are attributed to it are investigated by means of three point bending and crosscut adhesion standard tests. Results are discussed with respect to surface properties characterized by wettability measurements including acid-base approach, X-ray Photoelectrons Spectroscopy and Atomic Force Microscopy.
In order to facilitate industrialization of atmospheric pressure remote plasma as surface activation technique, this study proposes a new approach aiming at allowing a better and more equitable comparison between atmospheric pressure plasma processes. This comparison is made through the “plasma dose” expression, similar to the one commonly used in Corona process. It is applicable for one plasma gas and accounts for both received energy and interaction time of the post-discharge with the surface. Mechanisms assigned to improvement of adhesion will be more appreciated and their characterization will contribute to a greater definition of industrial surface preparation range by remote plasma.
- M. Nicolas GHERARDI – CNRS-LAPLACE – PhD Advisor
- M. Bertrand RIVES – IRT Saint Exupéry/STELIA – Co-Supervisor
- Mme Françoise MASSINES – Promes-CNRS – Rapporteur
- M. Patrick CHOQIET – Luxembourg Institute of Science and Technology – Rapporteur
- Mme Aline BARBERA – Airbus Helicopters – Examiner
- M. Nicolas NAUDE – Univ. Paul Sabatier – LAPLACE – Invited
- M. Thierry SINDZINGRE – AcXys Technologies – Invited
Abstract : Our study focuses on a remote atmospheric pressure plasma for the improvement of polymer surface reactivity. From the perspective of linking surface modifications to adhesives performances, wettability measurements are made using two models (Owens-Wendt-Rabel-Kaelble and Van Oss-Good-Chaudhury). This study is a contribution to correlate wettability with adhesion results obtained with three-point bending test. Acid-base properties of the treated polymeric surfaces are discussed according to the Lewis’s theory.
L. Bres, N. Naude, N. Gherardi and B. Rives: “Cold Atmospheric Pressure Plasma treatment of PEEK and PEKK based composite for aeronautical purposes”. PSE 2016 (15th International Conference on Plasma Surface Engineering), Garmisch-Partenkirchen (Germany). 2016
L. Bres, B. Rives : “Cold atmospheric pressure plasma activation for CFRP before paint application”. Airbus Structure Days, Madrid (Spain). 2015