High-performance polymer composites for dust-tolerant extreme environment bearings for lunar exploration

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-04-16 DOI:10.1016/j.wear.2025.206084

Jack Sorrell , Emerson Escobar Nunez , Andreas A. Polycarpou

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引用次数: 0

Abstract

The current study evaluates the tribological performance of vitrimer Aromatic thermosetting copolyester (ATSP), polyether ether ketone (PEEK), and Polyimide (PI) as high-performance polymers (HPPs) blended with different solid lubricants, such as Polytetrafluoroethylene (PTFE) and graphite (G), and reinforced with fillers such as Zylon, carbon nanotubes (CN), and carbon fibers (CF), as alternative materials for tribological components used during lunar exploration. Tribological experiments were performed using a pin-on-disk configuration under a dust environment to simulate the abrasive lunar regolith conditions encountered by different tribopairs under a normal load of 5 N, sliding speed of 0.25 m/s and unlubricated conditions in a N₂ environment at room temperature. Polymer-on-metal and polymer-on-polymer were the tribopairs employed to evaluate the friction, wear resistance, and capacity to mitigate the effect of dust during lunar exploration. Experimental results showed that vitrimer ATSP-based composites provide higher wear resistance and dust mitigation capacity as well as acceptable friction behavior, compared to other tribopair combinations.

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高性能聚合物复合材料耐尘极端环境轴承用于月球探测

目前的研究评估了玻璃体芳香族热固性共聚酯（ATSP）、聚醚醚酮（PEEK）和聚酰亚胺（PI）作为高性能聚合物（HPPs）与不同的固体润滑剂（如聚四氟乙烯（PTFE）和石墨(G)）混合，并与填料(如Zylon、碳纳米管（CN）和碳纤维（CF）增强，作为月球探测中使用的摩擦学部件的替代材料。在尘埃环境下，采用针盘式结构进行摩擦学实验，模拟不同摩擦副在5 N法向载荷、0.25 m/s滑动速度和室温N2无润滑条件下所遇到的磨蚀性月球风化条件。聚合物对金属和聚合物对聚合物是用来评估摩擦、耐磨性和减轻月球探测过程中灰尘影响的能力的摩擦副。实验结果表明，与其他摩擦副组合相比，玻璃体atsp基复合材料具有更高的耐磨性和降尘能力以及可接受的摩擦性能。

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.