Advanced active screen plasma (ASP) technology is used to modify polyacrylonitrile‐derived carbon fibre (CF) surfaces using gas mixtures of N₂–H₂ and N₂–H₂–Ar. Unlike conventional plasma treatments, ASP treatment can reduce the structural disorder of CF surfaces and increase the surface crystallite size. Moreover, ASP treatment can lead to an increased single fibre tensile strength. This is mainly because the post‐plasma nature of the ASP technology can effectively eliminate ion‐bombardment‐induced degradation while providing radicals necessary for surface modification. The addition of argon to the nitrogen–hydrogen gas mixture contributes to a more ordered graphitic structure on CF surfaces and further increases the single fibre tensile strength. The interfacial properties (interlaminar shear strength and flexural strength) of the resulting composites are improved.

中文翻译：

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通过主动筛分等离子体表面功能化来增强PAN衍生碳纤维和所得复合材料的性能

先进的有源筛分等离子体（ASP）技术用于使用N ₂ -H ₂和N ₂ -H _2的气体混合物改性聚丙烯腈衍生的碳纤维（CF）表面–Ar。与传统的等离子体处理不同，ASP处理可以减少CF表面的结构紊乱并增加表面微晶尺寸。此外，ASP处理可以提高单纤维的拉伸强度。这主要是因为ASP技术的等离子后性质可以有效消除离子轰击引起的降解，同时提供表面改性所需的自由基。向氮气-氢气混合物中添加氩气有助于CF表面上的石墨结构更有序，并进一步提高单纤维的拉伸强度。所得复合材料的界面性质（层间剪切强度和挠曲强度）得到改善。