用于水润滑超润滑性的碳纤维/纳米二氧化硅增强聚电解质接枝超高分子量聚乙烯

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL Tribology International Pub Date : 2024-10-04 DOI:10.1016/j.triboint.2024.110303

Jianyong Lan , Chunshao Mo , Xiaozhi Chen , Tao Hu , Xiaolei Li , Chenhui Zhang

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引用次数: 0

摘要

本研究开发了一种具有超低摩擦系数（COF）和高机械性能的新型超高分子量聚乙烯复合材料。通过热引发自由基聚合将亲水性单体 3-甲基丙烯酸磺丙基钾盐（SPMK）接枝到超高分子量聚乙烯粉末上的有效方法已经建立。接枝 SPMK 的超高分子量聚乙烯样品的 COF 显著降低了 50%。填充碳纤维和纳米二氧化硅后，超高分子量聚乙烯复合材料的 COF 在 0.1 m/s 的速度下可降低至 0.009。此外，单一超高分子量聚乙烯的磨损率降低了 76.1%。超高分子量聚乙烯复合材料优异的摩擦学性能归功于水合润滑和颗粒增强的协同作用。所制备的超高分子量聚乙烯复合材料具有实现水润滑轴承的巨大潜力。

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Carbon fiber/nano SiO2 reinforced polyelectrolyte-graft UHMWPE for water lubricated superlubricity

In this study, a new kind of UHMWPE composite with ultralow coefficient of friction (COF) and high mechanical properties was developed. An efficient method was established to graft hydrophilic monomer 3-sulfopropyl methacrylate potassium salt (SPMK) onto UHMWPE powder by thermal initiation radical polymerization. The COF of UHMWPE grafted SPMK sample was significantly reduced by 50 %. After filling carbon fiber and nano SiO₂, the COF of UHMWPE composites can be reduced as low as 0.009 at 0.1 m/s. Besides, a 76.1 % decrease in wear rate of single UHMWPE was achieved. The outstanding tribological properties of UHMWPE composite was attributed to the synergistic effect of hydration lubrication and particle reinforcement. The prepared UHMWPE composite has great potential to realize water lubricated bearing.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.