Surface Modification of Fluorine Contained Resins using an Elongated Parallel Plate Electrode Type Dielectric Barrier Discharge Device

In this study, we developed an elongated parallel plate type dielectric barrier discharge(DBD) device with pre-ionization electrodes for large-area surface modification of fluorine contained resin films, such as polytetrafluoroethylene (PTFE) and ethylene tetrafluoroethylene (ETFE). By optimizing a phase difference between pre-ionization and main discharge voltages, we confirmed that an intensified DBD plasma was generated between main electrodes having an electrode area of 50 × 200 mm2 and a gap of 5 mm. Uniformity of surface modification of fluorine contained resin films treated by DBD plasmas were examined under air and helium circumstances using carboxyl-reactive fluorescence dye for different polymer materials (PTFE, ETFE and polyethylene) and treatment times.