Tribological Behavior of Plant Oil-Based Extreme Pressure Lubricant Additive in Water-Ethylene Glycol Liquid
- Haiyang Ding1, Xiaohua Yang1, Lina Xu1, Mei Li1, Shouhai Li1, Jianling Xia1,*
1 Institute of Chemical Industry of Forest Products, Nanjing, 210042, China; Key Laboratory of Biomass Energy and Material, Nanjing, China; National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, 210042, China; Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing, 210042, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210042, China.
*Corresponding Author: Jianling Xia. Email:
.
(This article belongs to this Special Issue: Renewable Polymer Materials and Their Application)
*Corresponding Author: Jianling Xia. Email:
(This article belongs to this Special Issue: Renewable Polymer Materials and Their Application)
Abstract
A water-soluble lubricant additive (RSOPE) was prepared by
esterification reaction using fatty acid from rubber seed oil. The RSOPE was added
into water-ethylene glycol (W-EG) solution as lubricant additive. Dispersion
stability and rheological properties were investigated. We used a four-ball
tribotester to assess the lubrication performance of W-EG based fluid with the
RSOPE additive. The stainless-steel surface was analyzed using scanning electron
microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Good dispersion
stability was observed in the RSOPE/W-EG solutions. Furthermore, nonNewtonian
fluid behavior at low shear rates and Newtonian fluid behavior at high
shear rates was exhibited. The addition of RSOPE into water-glycol reduced the
friction coefficients (COF) and wear scar diameters (WSD). The maximum nonseizure
loads (PB) increased from 98 N to 752 N and the W-EG solution with
RSOPE had good corrosion resistance properties. Good tribological performances
for W-EG solution with RSOPE were attributed to the boundary tribofilm
composed of iron oxide, iron phosphide and so on.
Keywords
Rubber seed oil; fatty acid; water-soluble additive; tribological performance; friction mechanism
Cite This Article
Ding, H., Yang, X., Xu, L., Li, M., Li, S. et al. (2019). Tribological Behavior of Plant Oil-Based Extreme Pressure Lubricant Additive in Water-Ethylene Glycol Liquid. Journal of Renewable Materials, 7(12), 1391–1401.
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