The surfaces of two engineering polymers including polyamide 66 (PA66) and\npolytetrafluoroethylene (PTFE) were treated by diffuse coplanar surface barrier discharges in\natmospheric air. We found that plasma treatment improved the adhesion of PA66 for either\npolymer/polymer or polymer/steel joints, however, it was selective for the investigated adhesive\nagents. For PTFE the adhesion was unaltered for plasma treatment regardless the type of used\nadhesive. Tribological properties were slightly improved for PA66, too. Both the friction coefficient\nand wear decreased. Significant changes, again, could not be detected for PTFE. The occurred\nvariation in the adhesion and tribology was discussed on the basis of the occurred changes in surface\nchemistry, wettability and topography of the polymer surface.
Loading....