Effect of air dielectric barrier discharge plasma treatment on the adhesion property of sanded polyphenylene sulfide

Abstract

Air dielectric barrier discharge (DBD) plasma was employed to treat the sanded polyphenylene sulfide (PPS) surface. The plasma-treated PPS samples were bonded with epoxy adhesive, and the adhesion strength was measured by the single lap-joint specimen test. Scanning electron microscopy (SEM), water contact angle analysis, and X-ray photoelectron spectroscopy (XPS) were applied to investigate the effect of the plasma treatment on the PPS surface property. A slight etching trace was detected after the plasma treatment according to the SEM images. XPS and water contact angle analysis indicated that the plasma treatment introduced sulfide oxides (S¼O and O¼S¼O) onto the PPS surface leading to a higher surface energy. A steady improvement of bonding shear strength was achieved with the increase of plasma treatment time or discharge power density, which was consistent with the failure mode study. According to the above analysis, the air DBD plasma treatment could effectively improve the adhesion property of PPS.

Possible Ways to Improve Interphase Adhesion between Fiberglass and Polyphenylenesulfide

“…Plasma treatment of an air dielectric barrier discharge can lead to the appearance of oxygencontaining polar groups (-SO and -SO2) on the surface of the PPS film. Due to the presence of -SO2 groups on the surface of the PPS film, the interfacial adhesion between GF and PPS became stronger, and, as a result, excellent mechanical properties of the PPS/GF or PPS/GFF composites were obtained [52].…”

Mn/Ce Oxides Decorated Polyphenylene Sulfide Needle-Punching Fibrous Felts for Dust Removal and Denitration Application

“…The surface of PPS fiber has been etched, crosslinked, group introduced, roughened, etc., due to highly excited and unstable active particles in air plasma. On the surface of PPS fibers, fine cracks are formed, convex deposits are generated, and a series of polar groups containing oxygen and sulfur are generated [28][29][30][31]. Therefore, the air plasma increases the micro-roughness of the fiber surface, improves the fiber adhesion, biocompatibility, etc., and further facilitates the decorating of the catalyst.…”