Synergetic enhancement of wear resistance of polyimide coatings through the integration of MoS2 nanoflowers and MXene nanosheets

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2024-09-26 DOI:10.1016/j.wear.2024.205584

Jiayuan Yan , Chunxia Wu , Yongxing Liu , Wangfei Shen , Xiaoliang Zhang , Ping Li , Guangshuo Wang , Zehu Wang , Hongwei Che , Yanming Wang

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引用次数: 0

Abstract

Composite nano-lubricating fillers have attracted much attention due to their excellent synergistic effect. In this study, MoS₂ nanoflowers composed of two-dimensional nanosheets were synthesized by precise control of hydrothermal conditions. Using the "bridging" effect of dopamine, the flower-like MoS₂ was assembled with MXene to form a unique compound filler. This distinctive structure perfectly retained the shape of the MoS₂ flower. The impacts of compound fillers on the thermodynamic, mechanistic, and frictional properties of polyimide (PI) coatings were scrutinized. The formation of the compound fillers between MXene and MoS₂ effectively improve the interface compatibility of individual materials in the PI matrix. The compound fillers can enhance the thermodynamic stability and mechanical properties of PI. It is noteworthy that the frictional coefficient of the PI/(MoS₂:MXene = 4:6) compound coating decreased by 47.2 %, and the attrition rate reduced by 98.5 % compared to the pure PI coating. The compound lubricating filler prepared by the combination of two types of two-dimensional lubrication fillers has an important application prospect in the field of wear resistance of polymer materials.

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通过整合 MoS2 纳米花和 MXene 纳米片协同增强聚酰亚胺涂层的耐磨性

复合纳米润滑填料因其卓越的协同效应而备受关注。本研究通过精确控制水热条件，合成了由二维纳米片组成的 MoS2 纳米花。利用多巴胺的 "桥接 "效应，花状 MoS2 与 MXene 组装成一种独特的复合填料。这种独特的结构完美地保留了 MoS2 花朵的形状。复合填料对聚酰亚胺（PI）涂层的热力学、机械和摩擦性能的影响得到了仔细研究。在 MXene 和 MoS2 之间形成的复合填料有效地改善了聚酰亚胺基体中各种材料的界面相容性。复合填料可以提高聚酰亚胺涂层的热力学稳定性和机械性能。值得注意的是，与纯聚氨酯涂层相比，聚氨酯/（MoS2:MXene = 4:6）复合涂层的摩擦系数降低了 47.2%，损耗率降低了 98.5%。由两种二维润滑填料组合制备的复合润滑填料在聚合物材料的耐磨性领域具有重要的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.