Enhanced interfacial and tribological properties of fabric liner by constructing a MXene/HNTs/PAMAM hierarchical coating

材料科学 涂层 摩擦学 复合材料 摩擦系数
作者
Meng Li,Zhaozhu Zhang,Yaohui He,Chin-I Liao,Mingming Yang,Fanjie Chu,Wei Jiang,Junya Yuan,Weimin Liu
出处
期刊:Polymer Composites [Wiley]
标识
DOI:10.1002/pc.28310
摘要

Abstract A special “hard‐soft” MXene/Halloysite nanotube (HNTs)/ poly(amidoamine) (PAMAM) structure was constructed to improve the interfacial and tribological performances of fabric liner (FL) materials. Thereinto, the MXene/HNTs coating were successfully grafted onto fabric surface by electrostatic self‐assembly strategy, and a novel PAMAM dendrimer polymer terminated by amino groups was prepared via condensation reaction. The mechanical and tribological performances of MXene/HNTs/PAMAM@FL as well as wear mechanism were systematically evaluated. Specifically, the incorporation of MXene/HNTs/PAMAM coating enhanced the bonding strength by 62.4%, and declined the wear rate by 27.7% in comparison with pure FL. The splendid performance was ascribed to the synergistic effect of “soft” toughening PAMAM polymer and “hard” lubricating MXene/HNTs hybrids. The introduction of MXene/HNTs hybrids could enhance mechanical interlocking and bearing capacity. Then PAMAM polymer ameliorated interfacial adhesion and compatibility with resin via forming chemical bonds, which further reducing stress concentration through increased crack deflections due to the steric hindrance. Highlights MXene/HNTs/PAMAM coating was prepared via electrostatic self‐assembly and condensation reaction. Interfacial adhesion of fabric liner achieved effective promotion. High‐quality tribofilm was constructed by the synergistic enhancement effect between MXene/HNTs particles and PAMAM polymer. The tribo‐chemical reactions participate in improving the lubricity and durability of tribofilm.
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