Triple Function Lubricant Additives Based on Organic–Inorganic Hybrid Star Polymers: Friction Reduction, Wear Protection, and Viscosity Modification

2018 ◽  
Vol 11 (1) ◽  
pp. 1363-1375 ◽  
Author(s):  
Bas G. P. van Ravensteijn ◽  
Raghida Bou Zerdan ◽  
Dongjin Seo ◽  
Nicholas Cadirov ◽  
Takumi Watanabe ◽  
...  
Keyword(s):  
Star Polymers ◽  
Lubricant Additives ◽  
Friction Reduction ◽  
Hybrid Star ◽  
Inorganic Hybrid ◽  
Wear Protection ◽  
Viscosity Modification

scholarly journals Synthesis of the Organic/Inorganic Hybrid Star Polymers and Their Inclusion Complexes with Cyclodextrins

2005 ◽  
Vol 38 (8) ◽  
pp. 3099-3107 ◽  
Author(s):  
Shih-Chi Chan ◽  
Shiao-Wei Kuo ◽  
Feng-Chih Chang
Keyword(s):  
Inclusion Complexes ◽  
Star Polymers ◽  
Hybrid Star ◽  
Inorganic Hybrid

Nitrogen-Phosphorus Codoped Carbon Nanospheres as Lubricant Additives for Antiwear and Friction Reduction

2020 ◽  
Vol 3 (6) ◽  
pp. 5362-5371
Author(s):  
Qian Ye ◽  
Sha Liu ◽  
Fei Xu ◽  
Jin Zhang ◽  
Shujuan Liu ◽  
...  
Keyword(s):  
Lubricant Additives ◽  
Friction Reduction ◽  
Carbon Nanospheres ◽  
Nitrogen Phosphorus

scholarly journals Ionic Liquids as High-Performance Lubricants and Lubricant Additives

2021 ◽  
Author(s):  
Hong Guo ◽  
Patricia Iglesias Victoria
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
High Performance ◽  
Negative Impact ◽  
Molecular Structures ◽  
Lubricant Additives ◽  
Friction Reduction ◽  
Protic Ionic Liquids ◽  
Protection Mechanisms ◽  
Low Toxicity

Taking into account the environmental awareness and ever-growing restrictive regulations over contamination, the study of new lubricants or lubricant additives with high performance and low toxicity over the traditional lubes to reduce the negative impact on the environment is needed. In this chapter, the current literature on the use of ionic liquids, particularly protic ionic liquids, as high-performance lubricants and lubricant additives to different types of base lubricants are reviewed and described. The relation between ionic liquids structures and their physicochemical properties, such as viscosity, thermal stability, corrosion behavior, biodegradability, and toxicity, is elaborated. Friction reduction and wear protection mechanisms of the ionic liquids are discussed with relation to their molecular structures and physicochemical properties.

Dialkyl Dithiophosphate-Functionalized Gallium-Based Liquid-Metal Nanodroplets as Lubricant Additives for Antiwear and Friction Reduction

2020 ◽  
Vol 3 (10) ◽  
pp. 10115-10122
Author(s):  
Baoluo He ◽  
Sha Liu ◽  
Xiangyuan Zhao ◽  
Jianxi Liu ◽  
Qian Ye ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Lubricant Additives ◽  
Friction Reduction ◽  
Dialkyl Dithiophosphate

scholarly journals Opportunities and Challenges with Polyalkylene Glycol for Engine Oil Application

Lubricants ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 72
Author(s):  
Arup Gangopadhyay ◽  
John Cuthbert
Keyword(s):  
Fuel Economy ◽  
Friction Reduction ◽  
Engine Oil ◽  
Base Oil ◽  
Bench Tests ◽  
Automotive Engine ◽  
Wear Protection ◽  
Laboratory Bench ◽  
Polyalkylene Glycol ◽  
Engine Components

Base oil plays an important role in engine oil formulation in delivering overall performance attributes in addition to additives. Non-traditional base oil like polyalkylene glycol (PAG) did not get much attention in the past for formulating automotive engine oil. This investigation explored PAGs for enhancing engine oil performance primarily for fuel economy benefit over traditional mineral oil-based formulations. This paper highlights key findings from an extensive investigation, parts of which were published in detail elsewhere, and identifying opportunities and challenges. Several PAG chemistries were investigated depending on their feedstock material. Friction performance was evaluated by several methods starting with laboratory bench tests to engine components to chassis roll dynamometer tests. Durability was also evaluated from laboratory bench tests to engine components to ASTM sequence tests. The investigation revealed that significant friction reduction or fuel economy gain can be achieved with PAG oil but wear protection capability, piston deposit, and varnish require much improvement requiring identification/development of additive components. A few alternative routes for performance improvement are suggested.

scholarly journals The Performance of SiO2 and TiO2 Nanoparticles as Lubricant Additives in Sunflower Oil

Lubricants ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 10 ◽  
Author(s):  
Vicente Cortes ◽  
Karen Sanchez ◽  
Ramiro Gonzalez ◽  
Mataz Alcoutlabi ◽  
Javier A. Ortega
Keyword(s):  
Silicon Dioxide ◽  
Tio2 Nanoparticles ◽  
Sunflower Oil ◽  
Parallel Plate ◽  
Lubricant Additives ◽  
Experimental Results ◽  
Wear Protection ◽  
The Coefficient Of Friction ◽  
Conventional Models ◽  
Biodegradable Lubricant

In recent years, there has been growing concern regarding the use of petroleum-based lubricants. This concern has generated interest in readily biodegradable fluids such as vegetable oils. The present work evaluated the rheological and tribological characteristics of sunflower oil modified with silicon dioxide (SiO2) and titanium dioxide (TiO2) nanoparticles as lubricant additives at different concentrations. A parallel plate rheometer was used to evaluate the effects of concentration and shear rate on the shear viscosity, and the experimental data was compared with conventional models. The wear protection and friction characteristics of the oil-formulations were evaluated by conducting block-on-ring sliding tests. Surface analysis-based instruments, including scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and profilometry, were used to characterize the morphology and structure of the worn surfaces. The experimental results showed that the coefficient of friction decreased with the addition of SiO2 and TiO2 nanoparticles by 77.7% and 93.7%, respectively when compared to base sunflower oil. Furthermore, the volume loss was lowered by 74.1% and 70.1%, with the addition of SiO2 and TiO2 nanoparticles, respectively. Based on the experimental results, the authors conclude that modified sunflower oil enhanced with nanoparticles has the potential for use as a good biodegradable lubricant.

Friction reduction and viscosity modification of cellulose nanocrystals as biolubricant additives in polyalphaolefin oil

2019 ◽  
Vol 220 ◽  
pp. 228-235 ◽  
Author(s):  
Ke Li ◽  
Xiao Zhang ◽  
Chen Du ◽  
Jinwan Yang ◽  
Bolang Wu ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Friction Reduction ◽  
Viscosity Modification

Novel Organic/Inorganic Hybrid Star Polymer Surface-Crosslinked with Polyhedral Oligomeric Silsesquioxane

2019 ◽  
Vol 28 (2) ◽  
pp. 152-158 ◽  
Author(s):  
Jingyan Zhang ◽  
Dong Si ◽  
Shifeng Wang ◽  
Hao Liu ◽  
Xiaoming Chen ◽  
...  
Keyword(s):  
Polymer Surface ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Star Polymer ◽  
Hybrid Star ◽  
Inorganic Hybrid ◽  
Oligomeric Silsesquioxane
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