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Research Article | Open Access

Flexible metal–organic frameworks based self-lubricating composite

Xiao YANG1,2( ), Yunbo WANG1,2, Weihua CAO1,2, Jinghan ZHENG4, Changxin LIU1,2, Bingli FAN1,2, Xiaowen QI1,3
School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
Key Laboratory of Self-Lubricating Spherical Plain Bearing Technology of Hebei Province, Yanshan University, Qinhuangdao 066004, China
Aviation Key Laboratory of Science and Technology on Generic Technology of Self-Lubricating Spherical Plain Bearing, Yanshan University, Qinhuangdao 066004, China
Department of Materials. Imperial College London, London SW7 2AZ, UK
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Abstract

To expand the use of metal–organic frameworks (MOFs) based self-lubricating composite, flexible MOFs MIL-88D has been studied as a nanocontainer for loading lubricant. In this work, the mechanism of oleamine adsorption and desorption by MIL-88D was investigated through molecular simulations and experiments. Molecular simulations showed that the oleamines can be physically adsorbed into open MIL-88Ds with the Fe and O atoms of MIL-88D interacting with oleamine NH2- group. Higher temperature can cause Ole@MIL-88D to release more oleamines, while higher pressure on Ole@MIL-88D caused less oleamines released. Moreover the Ole@MIL-88D was incorporated into epoxy resin (EP) for friction tests. The optimum mass ratio of MIL-88D to EP is 15 wt%, and the EP/Ole@MIL-88D prefers light load and high frequency friction. This work suggests that flexible MOFs can be used as a nanocontainer for loading lubricant, and can be used as a new self-lubricating composite.

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Keywords

self-lubricating compositemetal–organic framework (MOFs)MIL-88Dmolecular dynamic (MD) simulation

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Friction
Volume 12 Issue 8,
August 2024
Pages 1816-1827
DOI: 10.1007/s40544-023-0857-0

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Cite this article:
YANG X, WANG Y, CAO W, et al. Flexible metal–organic frameworks based self-lubricating composite. Friction, 2024, 12(8): 1816-1827. https://doi.org/10.1007/s40544-023-0857-0

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Received: 24 July 2023
Revised: 30 October 2023
Accepted: 07 December 2023
Published: 25 May 2024
© The author(s) 2023.

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