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Plasma Modified Polyaramid Fiber Surface and Fiber/Epoxy Interface |
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| Authors: | Shijiu Jin Chunxin Chang Xia Wang Yunzhao Yu |
| Affiliation: | Institute of Chemistry , Academia Sinica, Beijing, 100080, P. R. China |
| Abstract: | Kevlar-49® was surface-modified through cold air plasma treatment and plasma grafting of poly-acrylic-acid (PAA), polyethylacrylate (PEA) and their copolymer (PAA/EA). To evaluate the effect of modification, the single fiber pull out (SPFO) test was developed; at least three important physical quantities, G i , F r L and τo were obtained. For grafting with PAA/EA, G i increased to 55 J/m2 in comparision with 36 J/m2 for Kevlar fibers with the sizing removed. The surface topography of fibers pulled from epoxy resin was studied by scanning electron microscopy (SEM). |
| Keywords: | Kevlar fiber plasma treatment surface grafting poly(acrylic acid) (PAA) poly(ethyl acrylate) (PEA) poly(acrylic acid) -co-poly(ethyl acrylate) (PAA/EA) fiber/resin interface SEM XPS single filament surface morphology failure mode |