The purpose of this study is to examine the fretting wear property of ultra-high molecular weight polyethylene (UHMWPE)-based composites reinforced by different content of attapulgite.,A series of composites were prepared by a hot-pressing method. Fretting tests were carried out using an SRV-IV oscillating reciprocating friction wear tester with a load of 10 N and a frequency of 100 Hz. The morphology of the fracture structure and the worn surface was observed by field-emission scanning electron microscopy, X-ray diffraction and a non-contact three dimensional surface profiler.,With the addition of attapulgite, the microstructure of the composites become more regular, and their heat resistance improved. Furthermore, the friction coefficient and the specific wear rate of the composites with lower filler content reduced compared with that of neat UHMWPE, and the optimum filler content is 1 per cent.,The study investigated the fretting resistance mechanism of the attapulgite in the UHMWPE matrix. The results could help to provide some experimental evidence for the broader application of silicates on the fretting wear resistance of polymers.,The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-10-2019-0420/

中文翻译：

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凹凸棒石对UHMWPE复合材料磨损表面及微动磨损性能的影响

本研究的目的是考察不同含量凹凸棒石增强的超高分子量聚乙烯(UHMWPE)基复合材料的微动磨损性能。通过热压法制备了一系列复合材料。微动试验使用 SRV-IV 摆动往复摩擦磨损试验机进行，载荷为 10 N，频率为 100 Hz。通过场发射扫描电镜、X射线衍射和非接触式三维表面轮廓仪观察断口结构和磨损表面的形貌。随着凹凸棒石的加入，复合材料的微观结构变得更加规则，并且它们的耐热性得到提高。此外，与纯UHMWPE相比,填料含量较低的复合材料的摩擦系数和比磨损率降低,最佳填料含量为1%。,研究了凹凸棒石在UHMWPE基体中的抗微动磨损机理。该结果有助于为硅酸盐在聚合物微动耐磨性方面的更广泛应用提供一些实验证据。本文的同行评审历史可在：https://publons.com/publon/10.1108/ILT-10 -2019-0420/