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基于聚四氟乙烯和层状硅酸盐的复合材料摩擦表面形态分析

Morphology Analysis of Friction Surfaces of Composites Based on PTFE and Layered Silicates.

作者信息

Kapitonova Iuliia, Lazareva Nadezhda, Tarasova Praskovia, Okhlopkova Aitalina, Laukkanen Samuel, Mukhin Vasiliy

机构信息

Federal State Autonomous Educational Institution of Higher Education "M. K. Ammosov North-Eastern Federal University", 58 Belinskiy str, 677027 Yakutsk, Russia.

出版信息

Polymers (Basel). 2022 Nov 1;14(21):4658. doi: 10.3390/polym14214658.

DOI:10.3390/polym14214658
PMID:36365652
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9654802/
Abstract

In the present study, the tribological behavior of polytetrafluoroethylene (PTFE) composites filled with natural layered silicates (LS) was investigated. The change in the morphology of the friction surface of composites depending on the content and chemical composition of layered silicates has been shown. The friction surface of PTFE composites with layered silicates was investigated by scanning electron microscopy (SEM). The formation on the friction surface of a special layer with a structure different from the bulk of the polymer, which is formed from particles of fillers and wear products, has been established. The thickness of this layer is independent of the content of layered silicates in the polymer. It was indicated that wear debris of PTFE composites was assembled during friction and uniformly cover the friction surface layer by layer, thereby forming a protective layer.

摘要

在本研究中，对填充天然层状硅酸盐（LS）的聚四氟乙烯（PTFE）复合材料的摩擦学行为进行了研究。研究表明了复合材料摩擦表面形态随层状硅酸盐含量和化学成分的变化。通过扫描电子显微镜（SEM）研究了含层状硅酸盐的PTFE复合材料的摩擦表面。已确定在摩擦表面形成了一层特殊的层，其结构不同于聚合物本体，该层由填料颗粒和磨损产物形成。该层的厚度与聚合物中层状硅酸盐的含量无关。结果表明，PTFE复合材料的磨损碎屑在摩擦过程中聚集，并逐层均匀覆盖摩擦表面，从而形成一层保护层。

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