Surface treatment of para-aramid fiber by argon dielectric barrier discharge plasma at atmospheric pressure

摘要

This paper is focused on influence of argon dielectric barrier discharge (DBD) plasma on the adhesive per formance and wettability of para-aramid fibers and three parameters including treated power, exposure time and argon flux were detected. The interfacial shear strength (IFS.S) was greatly increased by 28% with 300W, 60s, 2 L min~(-1) argon flux plasma treatment. The content of oxygen atom and oxygen-containing polar functional groups were enhanced after the argon plasma treated, so as the surface roughness, which contributed to the improvement of surface wettability and the decrease of contact angle with water. How ever, long-time exposure, exorbitant power or overlarge argon flux could partly destroy the prior effects of the treatment and damage the mechanical properties of fibers to some degree.