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Abstract <p>The influence of low-pressure (LP) air plasma treatment on the surface morphology of aramid fibers (AFs) in Kevlar fabric and on the physicomechanical properties of laminated composites with a polyphenylene sulfide matrix reinforced with this fabric has been investigated. The change in the AF surface morphology (increase in roughness) is most pronounced after LP plasma treatment for 30 min. Energy dispersive X-ray spectroscopy data are used to discuss the probability of chemical modification of the AF surface as a result of LP plasma treatment, namely, the introduction of –OH and –COOH functional groups, which additionally improves the interlaminar adhesion. After LP plasma treatment for 30 min, the interlaminar shear strength of the laminated composites is 30.2 MPa, which is 55% higher than that of the composites reinforced with untreated aramid fabric (19.5 MPa). Static tension tests demonstrate that the ultimate tensile strength of the composites increases by 11% and the elastic modulus, by 22%.</p>

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Surface Modification of Aramid Fibers in Low-Pressure Air Plasma for the Manufacture of Laminated Polyphenylene Sulfide-Based Composites

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • V. S. Duong,
  • P. V. Kosmachev,
  • S. V. Panin

摘要

Abstract

The influence of low-pressure (LP) air plasma treatment on the surface morphology of aramid fibers (AFs) in Kevlar fabric and on the physicomechanical properties of laminated composites with a polyphenylene sulfide matrix reinforced with this fabric has been investigated. The change in the AF surface morphology (increase in roughness) is most pronounced after LP plasma treatment for 30 min. Energy dispersive X-ray spectroscopy data are used to discuss the probability of chemical modification of the AF surface as a result of LP plasma treatment, namely, the introduction of –OH and –COOH functional groups, which additionally improves the interlaminar adhesion. After LP plasma treatment for 30 min, the interlaminar shear strength of the laminated composites is 30.2 MPa, which is 55% higher than that of the composites reinforced with untreated aramid fabric (19.5 MPa). Static tension tests demonstrate that the ultimate tensile strength of the composites increases by 11% and the elastic modulus, by 22%.