Synthesis,Characterization, and Tribological Behavior of Neopentyl Polyol Ester-Based and Mixed Oil-Based Titanium Complex Grease |
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Authors: | Jiguo Chen |
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Affiliation: | (1) School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, People’s Republic of China |
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Abstract: | Four types of titanium complex grease were synthesized using a 3-l reaction vessel, and their friction and wear behavior were
evaluated using a four-ball tester in the presence of two base oils: neopentyl polyol ester and a mixture oil of neopentyl
polyol ester, 650SN, and epoxidized soy bean oil (4.5:2.5:1), with two compositions: benzoic acid/stearic acid and sebacic
acid/stearic acid. The results indicate that mixed oil-based titanium complex grease has excellent tribological properties.
Moreover, compositions affect the physical characteristics of titanium complex grease but have little effect on the friction-reduction,
antiwear, and load-carrying capability of the same types of oil-based titanium complex grease. In addition, base oils also
affect the tribological property of titanium complex grease. Based on scanning electron microscopy and x-ray photoelectron
spectrometer of the worn surfaces of steel balls lubricated with the different types of grease, synergistic boundary lubrication
was proposed to illustrate the friction-reduction and antiwear properties of titanium complex grease. |
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Keywords: | |
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