Tribological Application of Oleylamine Incorporated Flexible Metal-Organic Frameworks Mil-88a Based Self-Lubricating Composite

Abstract

To expand the application of MOFs in self-lubricating composites, we synthesized metal organic frameworks (MOFs) MIL-88A tailored for oleylamine (Ole) adsorption, resulting in the Ole@MIL-88A composite with oleylamine adsorbed. This material was incorporated into epoxy resin (EP) to form EP/Ole@MIL-88A composites. The composites were firstly applied to axle sleeves for tribological evaluations. The tests revealed that the EP/10 wt.% Ole@MIL-88A composite had the lowest COF (0.137), with a 65.9% decrease compared to pure EP. The EP/8 wt.% Ole@MIL-88A displayed the lowest wear depth, with a 68.4% reduction compared to pure EP. This research signifies the initial application of MOF-based self-lubricating composites to mechanical components and engineering evaluations, laying the groundwork for their design in future industrial settings.

Keywords: self-lubricating composite, metal-organic framework (MOFs), oleylamine, tribological properties