Effect of Surface Modifier on their Tribological Properties of LaF3 Nanoparticles in Base Oil

Guo Xian Yu; Mei Jin; Kun Wan; Ping Lu

doi:10.4028/www.scientific.net/AMR.230-232.774

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 230-232Effect of Surface Modifier on their Tribological...

Effect of Surface Modifier on their Tribological Properties of LaF₃ Nanoparticles in Base Oil

Abstract:

Surface modifiers with different lipophilic chain lengths, such as, lauric acid diethanolamine, myristic acid diethanolamine, palmitic acid diethanolamine and stearic acid diethanolamine, were used to prepare four kinds of LaF₃nanoparticles in the mixture solvent of water-ethanol. Morphology and surface modification of LaF₃nanoparticles were investigated by TEM, FTIR and TG. Effect of length of surface modifier lipophilic chain on tribological properties of LaF₃ nanoparticles and their susceptibility to base oils were investigated by a four-ball machine. Results show that the tribological properties of LaF₃nanoparticles in the base oil in build up as lipophilic chain length of surface modifiers increases; the longer the lipophilic chain is, the better the susceptibility of the nanoparticles to liquid paraffin wax is. This is mainly because that the lipophilic chain length influences the interface activity of the nanoparticles, moreover, for homologous organic acid soaps, the longer the lipophilic chain is, the better its friction reducing performance is; the properties of base oils also influence the interface activity of the nanoparticles.

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Periodical:

Advanced Materials Research (Volumes 230-232)

Pages:

774-778

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.230-232.774

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Online since:

May 2011

Authors:

Guo Xian Yu, Mei Jin, Kun Wan, Ping Lu

Keywords:

LaF₃, Lipophilic Chain Length, Nanoparticle, Surface Modifier, Tribological Property

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