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Effect of surface treatment on the structure and properties of para-aramid fibers by phosphoric acid

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Abstract

The surface of para-aramid fiber was modified by phosphoric acid solutions (H3PO4) based on an orthogonal experimental design and analysis method. Statistical results indicate that treatment temperature is the most significant variable in the modification processing, while treatment time was the least important factor. The structure and morphology of the modified fiber were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction instrument (XRD), and scanning electron microscope (SEM). The results showed that some polar groups were introduced into the molecular structure of aramid fibers and the physical structure of the treated fibers was not etched obviously. The interfacial properties of aramid fiber/epoxy composites were investigated by the single fiber pull-out test (SFP), and the mechanical properties of aramid fibers were investigated by the tensile strength test. The results showed that the interfacial shear strength (IFSS) of aramid/epoxy composites was remarkably improved and the breaking strength of aramid fibers was not affected appreciably after surface modification.

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Authors and Affiliations

  1. College of Textile and Garment, Shandong University of Technology, Zibo, 255049, P.R. China

    Jia Zhao

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  1. Jia Zhao
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Correspondence to Jia Zhao.

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Zhao, J. Effect of surface treatment on the structure and properties of para-aramid fibers by phosphoric acid. Fibers Polym 14, 59–64 (2013). https://doi.org/10.1007/s12221-013-0059-x

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  • DOI: https://doi.org/10.1007/s12221-013-0059-x

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