Abstract
In this article, the potassium permanganate solutions (KMnO4) was used to treat the PPTA fiber based on an orthogonal experimental design. The optimum conditions of KMnO4treatment were concentration of 20%, temperature of 30°C and treating time of 20min. The interfacial properties of aramid fiber/epoxy composites were investigated by the single fiber pull-out test (SFP), and the results showed that the interfacial shear strength (IFSS) of aramid/epoxy composites was remarkbly improved.
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