Surface Processing of Polyester Canvas using Atmospheric Pressure Air Glow Discharge Plasma

A staggered contact electrode structure was proposed in this study. Through pressing the electrode closely to the surface of polyester canvas, the electric field distribution with intensive electric field in short gap while weak electric field in long gap was formed, which was conducive to inhibit the emergence of filamentary discharge. Specifically, such electric field distribution could restrain the development degree of electron avalanche so that the quasi atmospheric pressure glow discharge plasma with nearly uniform luminescence could be generated in air gaps between the electrode and the surfaces of polyester canvas. Moreover, the device based on multi groups of staggered contact electrode structures was employed to achieve the large-area and continuous processing of polyester canvas. Through scanning electron microscope observations and peel strength tests, it could be observed that the surface roughness of polyester fabrics was obviously enhanced and the adhesion property of the canvas was greatly improved after treatment. The peel strength value was increased from 3.5 to 7.3 N/mm.