Effect of silver/polydopamine graphene oxide as lubricating oil additive on temperature rise and vibration of motorized spindle

In this study, polydopamine and silver-modified graphene oxide (Ag/PGO) were prepared using a one-step method, and the effects of Ag/PGO as a lubricating oil additive on the viscosity, thermal conductivity, and lubricating performance of lubricating oil were studied. The influence of additive lubric...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2024-03, Vol.238 (5), p.1688-1698
Main Authors: Zhang, Lixiu, Yin, Zhenyu, Zhang, Ke, Wang, Junhai, Wei, Xiaoyi, Wang, Liyan
Format: Article
Language:English
Subjects:
Friction
Friction reduction
Graphene
Heat conductivity
Heat transfer
Lubricating oils
Lubricating properties
Motorized spindles
Nanocomposites
Nanoparticles
Oil additives
Silver
Thermal conductivity
Thermophysical properties
Vibration
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Summary:In this study, polydopamine and silver-modified graphene oxide (Ag/PGO) were prepared using a one-step method, and the effects of Ag/PGO as a lubricating oil additive on the viscosity, thermal conductivity, and lubricating performance of lubricating oil were studied. The influence of additive lubricating oil on the temperature increase and vibration of a high-speed motorized spindle was studied through a motorized spindle experiment. The results showed that the addition of Ag/PGO nanocomposites could improve the thermophysical properties and lubricating properties of the lubricating oil. The Ag/PGO nanoparticles deposited on the friction surface formed a friction protective film, which prevented direct contact between the friction pairs and effectively reduced the heat generated through friction and micro-peak collision during bearing operation. The lubricating oil containing Ag/PGO had high thermal conductivity and a good heat dissipation effect in convection heat transfer in the bearing cavity. The deposition and repair of nanoparticles could improve the micro-morphology of the friction surface and reduce the high-frequency amplitude of the motorized spindle.
ISSN:0954-4062
2041-2983
DOI:10.1177/09544062231187731