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摘要:
The high specific-strength of glass fibers and exceptional self-lubrication of polytetrafluoroethylene (PTFE) fibers promote the potential application of hybrid PTFE/glass fabric composites in the tribological field, but their weak interfacial adhesion and inferior thermal properties significantly inhibit their tribological performance and reliability. Herein, a hybrid of polydopamine/silicon carbide/polyethyleneimine (PDA/SiC/PEI) functional coating was co-deposited onto the hybrid PTFE/glass fabric surface through a one-step impregnation method, leading to increased surface roughness and abundant amine groups. Tensile and peeling tests showed that this functional coating offered 47.8% enhancement in the fabric/matrix interfacial adhesion without compromising the strength of the pristine fabric. Moreover, the additional incorporation of WS2, and aluminum nitride (AlN) micro-fillers contributed to the development of a high-quality tribofilm and improved the thermal properties of fabric composites. The results of wear tests proved that the hybrid-fabric composites, after the introduction of functional coating and micro-fillers, exhibited outstanding tribological performance, which was attributed to the superior interfacial adhesion as well as the synergistic enhancement effects between WS2 and AlN micro-fillers.
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篇名 Combined effects of interface modification and micro-filler reinforcements on the thermal and tribological performances of fabric composites
来源期刊 摩擦(英文版) 学科
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年,卷(期) 2021,(5) 所属期刊栏目 Research Articles
研究方向 页码范围 1110-1126
页数 17页 分类号
字数 语种 英文
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摩擦(英文)
双月刊
2223-7690
10-1237/TH
北京市海淀区清华大学建筑学院
eng
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309
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0
总被引数(次)
195
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