Atmospheric reducing plasma modification of PTFE for adhesion improvement
| Authors | |
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| Year of publication | 2021 |
| Type | Conference abstract |
| MU Faculty or unit | |
| Citation | |
| Description | Polytetrafluoroethylene (PTFE) is a fluoropolymer with probably the most difficult adhesion to other types of materials because of its very low surface energy. Atmospheric pressure plasma generated by diffuse coplanar surface barrier discharge (DCSBD) [1,2] was utilized for adhesion improvement of PTFE surfaces. X-ray photoelectron spectroscopy was used for a detailed study of plasma-chemical changes on the PTFE surfaces after plasma modification in ambient air [3], pure H2 plasma, and plasma generated in H2-containing gas mixtures. As observed, plasma modification of the PTFE surface by reducing H2 – containing plasma led to completely different surface chemistry in comparison to using standard ambient air plasma. Such plasma treatment was then studied for the improvement of painting adhesion on PTFE and for adhesion improvement of glued joints of PTFE-like shell of solar tubes into plastic housings. As revealed, PTFE treated by H2 – containing plasma exhibited the best adhesion results (Table 1). |
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