- A Biobased Nitrogen-Containing Lubricant Additive Synthesized from Epoxidized Methyl Oleate Using an Ionic Liquid Catalyst

2013 ◽  
pp. 150-165 ◽  
Keyword(s):  
Ionic Liquid ◽  
Methyl Oleate ◽  
Lubricant Additive

scholarly journals Effect of Ionicity of Three Protic Ionic Liquids as Neat Lubricants and Lubricant Additives to a Biolubricant

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 713 ◽  
Author(s):  
Hong Guo ◽  
Angela Rina Adukure ◽  
Patricia Iglesias
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Friction And Wear ◽  
Cost Effective ◽  
Lubricant Additive ◽  
Lubricant Additives ◽  
Environmental Damage ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
Wear Process

Friction and wear of sliding surfaces are responsible for important energy losses and negative environmental effects. The use of environmentally friendly and cost-effective protic ionic liquids as neat lubricants and lubricant additives has the potential to increase the efficiency and durability of mechanical components without increasing the environmental damage. In this work, three halogen-free protic ionic liquids with increasing extent of ionicity, 2-hydroxyethylammonium 2-ethylhexanoate, 2-hydroxymethylammonium 2-ethylhexancate, and 2-hydroxydimethylammonium 2-ethylhexanoate, were synthesized and studied as neat lubricants and additives to a biodegradable oil in a steel–steel contact. The results show that the use of any protic ionic liquid as a neat lubricant or lubricant additive reduced friction and wear with respect to the biodegradable oil. The ionic liquid with the lowest ionicity reached the highest wear reduction. The one possessing the highest ionicity presented the poorest friction and wear behaviors as a neat lubricant, probably due to the more ionic nature of this liquid, which promoted tribocorrosion reactions on the steel surface. This ionic liquid performed better as an additive, showing that a small addition of this liquid in a biodegradable oil is enough to form protective layers on steel surfaces. However, it is not enough to accelerate the wear process with detrimental tribocorrosion reactions.

Ionic liquid modified multi-walled carbon nanotubes as lubricant additive

2015 ◽  
Vol 81 ◽  
pp. 38-42 ◽  
Author(s):  
Bo Yu ◽  
Zhilu Liu ◽  
Chenbo Ma ◽  
Jianjun Sun ◽  
Weimin Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Lubricant Additive ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Antifriction and Antiwear Properties of an Ionic Liquid with Fluorine-Containing Anion Used as Lubricant Additive

2017 ◽  
Vol 65 (2) ◽  
Author(s):  
D. Blanco ◽  
R. González ◽  
J. L. Viesca ◽  
A. Fernández-González ◽  
M. Bartolomé ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additive ◽  
Antiwear Properties

scholarly journals Synthesis and evaluation of a protic ionic liquid as a multifunctional lubricant additive

Friction ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 568-576 ◽  
Author(s):  
Cheng Jiang ◽  
Yanan Wang ◽  
Huaigang Su ◽  
Weimin Li ◽  
Wenjing Lou ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additive ◽  
Protic Ionic Liquid

Antiwear Performance and Mechanism of an Oil-Miscible Ionic Liquid as a Lubricant Additive

2012 ◽  
Vol 4 (2) ◽  
pp. 997-1002 ◽  
Author(s):  
Jun Qu ◽  
Dinesh G. Bansal ◽  
Bo Yu ◽  
Jane Y. Howe ◽  
Huimin Luo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additive ◽  
Performance And Mechanism

scholarly journals Synergistic Behavior of Graphene and Ionic Liquid as Bio-Based Lubricant Additive

Lubricants ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 46
Author(s):  
Muhammad Harith Hasnul ◽  
Nurin Wahidah Mohd Zulkifli ◽  
Masjuki Hassan ◽  
Syahir Amzar Zulkifli ◽  
Mohd Nur Ashraf Mohd Yusoff ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additive ◽  
Dispersion Stability ◽  
Stable Suspension ◽  
Iron Sample ◽  
Frictional Performance ◽  
Additive Combination ◽  
Synergistic Behavior ◽  
Worn Surface ◽  
Lubricating Mechanism

The constant utilization of petroleum-based products has prompted concerns about the environment, hence a replacement for these products must be explored. Biolubricants are a suitable replacement for petroleum-based lubricants as they provide better lubricity. Biolubricant performance can be improved by the addition of graphene. However, there are reports that graphene is unable to form a stable suspension for a long period. This study used a graphene-ionic liquid additive combination to stabilize the dispersion in a biolubricant. Graphene and ionic liquid were dispersed into the biolubricant via a magnetic stirrer. The samples were tested using a high frequency reciprocating rig. The cast iron sample was then further observed using various techniques to determine the lubricating mechanism of the lubricant. Different dispersion stability of graphene was observed for different biolubricants, which can be improved with ionic liquids. All ionic liquid samples maintained an absorbance value of three for one month. The utilization of ionic liquid was also able to decrease the frictional performance by 33%. Further study showed that by using the ionic liquid alone, the frictional could only reduce the friction coefficient by 13% and graphene could only reduce the friction by 7%. A smooth worn surface scar can be seen on the graphene-IL sample compared to the prominent corrosive spot on the IL samples and abrasive scars on graphene samples. This indicates synergistic behavior between the two additives. It was found that the ionic liquid does not only improve the dispersion stability, but also plays a role in forming the tribolayer.

Synergistic Effect Between Phosphonium-Based Ionic Liquid and Three Oxide Nanoparticles as Hybrid Lubricant Additives

2020 ◽  
Vol 142 (5) ◽  
Author(s):  
M. Upendra ◽  
V. Vasu
Keyword(s):  
Ionic Liquid ◽  
Surface Characterization ◽  
Sio2 Nanoparticles ◽  
Lubricant Additive ◽  
Conclusive Evidence ◽  
Base Oil ◽  
Cuo Nps ◽  
Worn Surface ◽  
Group 1 ◽  
Mineral Base

Abstract The tribological properties of ionic liquid (IL) trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate along with Al2O3, CuO, and SiO2 nanoparticles (NPs) have been investigated as a lubricant additive in a group 1 mineral base oil. About 0.5 wt% concentration of additives were added in base oil, and tribological tests were conducted at mild (stipulated) and severe (ASTM D 4172D) working conditions to assess the synergy between IL and NPs. This study shows the excellent synergy between IL, Al2O3, and CuO NPs in improving tribological and extreme pressure (EP) properties. Al2O3 and CuO hybrid nanolubricants decreased friction by 19% and 24%, whereas wear by 32% and 36%, respectively, at ASTM test conditions. IL displayed very good EP properties with a total improvement of 19%, and the highest load-bearing capacity was observed for Al2O3 and CuO hybrid nanolubricants with an improvement of 30% and 34%, respectively. No conclusive evidence of synergy has been observed between IL and SiO2 NPs. Surface characterization techniques, such as scanning electron microscope, energy dispersive X-ray spectrometer, and Raman spectra, demonstrated the formation of a tribofilm rich in phosphate and tribosintered NPs on the worn surface responsible for improved triboperformances.

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