Abstract
In order to improve the uniformity of dispersion of aramid pulp (AP) in an epoxy resin (EP) system containing the EP and curing agent, a series of treatments including the surface cleaning, colloid mill grinding, freeze-drying of APs were carried out in this article. In addition, the composites were prepared by mixing the untreated and treated APs and EP system with the AP mass fractions of 0, 0.1, 0.3, 0.5 and 0.7%. The APs and their dispersion behaviors in EP system were characterized by scanning electron microscope (SEM), fiber quality analyzer, specific surface area tester and optical microscope, moreover, the impact strength and section morphology of composites after impact damage were tested and characterized by a universal material testing machine and SEM.
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