Abstract In this study, attapulgite (ATP) nanofibers were modified by hydrotalcite-like cobalt-nickel via hydrothermal (named ATP-CoNi(H)) and co-precipitation (named ATP-CoNi(C)) method, respectively. The morphology and the composition of the ATP-CoNi hybrids were investigated. Meanwhile, the fretting wear properties of ultra-high molecular weight polyethylene (UHMWPE)-based composites reinforced by ATP and two kinds of ATP-CoNi hybrids at 2 wt% content were investigated. The results show that ATP-CoNi hybrids exhibit better fretting wear properties than pure ATP in the UHMWPE matrix. Thereinto, the ATP-CoNi(C) nanofibers present the best antifriction property that the friction coefficient and wear volume severally decreased by 27% and 47%. It is attributed to the optimal interfacial bonding between the nanofibers and the matrix, which makes the dense structure of the composite.

中文翻译：

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通过在凹凸棒石纳米纤维上接枝 Co-Ni 层状双氢氧化物提高 UHMWPE 复合材料的微动磨损性能

摘要 本研究通过水热法（命名为ATP-CoNi(H)）和共沉淀法（命名为ATP-CoNi(C)），分别用类水滑石钴镍对凹凸棒石（ATP）纳米纤维进行改性。研究了 ATP-CoNi 杂化物的形态和组成。同时，研究了 ATP 增强的超高分子量聚乙烯 (UHMWPE) 基复合材料和两种 2 wt% 含量的 ATP-CoNi 杂化物的微动磨损性能。结果表明，在 UHMWPE 基体中，ATP-CoNi 杂化物表现出比纯 ATP 更好的微动磨损性能。其中，ATP-CoNi(C)纳米纤维表现出最好的减摩性能，摩擦系数和磨损量分别降低了27%和47%。这归因于纳米纤维和基体之间的最佳界面结合，