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- W3063528377 endingPage "109069" @default.
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- W3063528377 abstract "In order to solve the problems of poor dispersibility and wettability, as well as unsatisfactory wear resistance and load capacity of polytetrafluoroethylene (PTFE) as water lubricating additive, a new type of [email protected] ([email protected]2) core-shell nanoparticles was prepared by encapsulating SiO2 layer on the surface of PTFE via chemical bonding. Electron microscope analysis showed that the synthesized particles had well-defined core-shell morphology. Special double/multi-core structure and a reduced thickness of the intermediate shell were found, and the formation mechanisms were also explored in detail. The water contact angle measurement proved that the wettability of PTFE could be greatly enhanced by coating SiO2 layer. The friction tests were performed to investigate the water lubrication properties of [email protected]2 additive, the results indicated that the core-shell [email protected]2 nanoparticles possessed the superior tribological properties, and the maximum friction coefficient and wear volume were respectively decreased by 75% and 99% when compared with pure water and water with PTFE/SiO2. Based on the analysis of worn surface, it was believed that the existence of core-shell structure and the formation of robust transfer film were the key to its excellent performance, and a possible lubrication mechanism was also proposed." @default.
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- W3063528377 date "2020-10-01" @default.
- W3063528377 modified "2023-10-12" @default.
- W3063528377 title "Novel additive of PTFE@SiO2 core-shell nanoparticles with superior water lubricating properties" @default.
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- W3063528377 doi "https://doi.org/10.1016/j.matdes.2020.109069" @default.
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