Flexible metal–organic frameworks based self-lubricating composite

IF 6.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Friction Pub Date : 2024-05-25 DOI:10.1007/s40544-023-0857-0

Xiao Yang, Yunbo Wang, Weihua Cao, Jinghan Zheng, Changxin Liu, Bingli Fan, Xiaowen Qi

引用次数: 0

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.

Abstract Image

查看原文本刊更多论文

基于金属有机框架的柔性自润滑复合材料

为了扩大基于金属有机框架（MOFs）的自润滑复合材料的应用，研究人员将柔性 MOFs MIL-88D 作为装载润滑剂的纳米容器。本研究通过分子模拟和实验研究了油胺在 MIL-88D 中的吸附和解吸机理。分子模拟结果表明，油胺可以通过 MIL-88D 的 Fe 原子和 O 原子与油胺 NH2 基相互作用而被物理吸附到开放的 MIL-88D 中。温度越高，Ole@MIL-88D 释放的油胺越多，而 Ole@MIL-88D 所承受的压力越大，释放的油胺越少。此外，还将 Ole@MIL-88D 加入环氧树脂（EP）中进行摩擦试验。MIL-88D 与 EP 的最佳质量比为 15 wt%，EP/Ole@MIL-88D 更倾向于轻载和高频摩擦。这项工作表明，柔性 MOFs 可用作装载润滑剂的纳米容器，并可用作新型自润滑复合材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Friction Engineering-Mechanical Engineering

CiteScore

12.90

自引率

13.20%

发文量

324

审稿时长

13 weeks

期刊介绍： Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.