Tribological Properties of Pickering Emulsion Constructed with ZnO Nanoparticles Modified by Magnetic Surfactants
Colloids and Surfaces A: Physicochemical and Engineering Aspects(2024)
Abstract
To fulfill the requirements of long-term stable lubrication and corrosion protection, conventional industrial emulsion lubricants often involve complex formulations with multiple components, posing challenges in terms of preparation, recycling, and potential environmental impact. In order to address the problems, a Pickering emulsion with a simple composition and excellent anti-corrosion properties is prepared by incorporating magnetic surfactant ((C18H37)2N+(CH3)2[CeCl4]-) modified ZnO nanoparticles as a multifunctional additive into colza oil and water. The results demonstrate that Pickering emulsions exhibit excellent stability. Moreover, their magnetic responsiveness makes them promising candidates for intelligent lubricants. Furthermore, effective recycling and sustainability are achieved through reversible emulsification and demulsification. Tribological test results reveal that the addition of modified ZnO enhances the emulsions’ anti-friction and anti-wear properties due to nanoparticle rolling and repairing effects, generation of tribofilms, and deposition of ZnO nanoparticles. We anticipate that the Pickering emulsion could find widespread applications in various sectors, including metalworking and industrial manufacturing, owing to its uncomplicated composition, environmentally friendly nature, excellent anti-corrosion capabilities, and superior lubricating properties.
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Key words
ZnO nanoparticles,magnetic surfactants,Pickering emulsion,tribological properties,lubrication mechanism
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