Abstract
The effects of radio-frequency plasma treatment on ultra high strength polyethylene (UHSPE) fibers using ammonia, oxygen, and argon plasmas were evaluated. The effects of oven aging on adhesion of UHSPE fibers were determined; two methods of oven aging, in air and in water, were used in this study. The effects of aging on the bond between the plasma treated UHSPE and epoxy resin were mechanically evaluated using single fiber pull-out tests. Electron spectroscopy for chemical analysis (ESCA) and wetting force measurements were used to evaluate chemical changes. ESCA results indicate that O-C=0 groups are important for improving IFSS between epoxy and UHSPE.
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