Tribological properties of phosphate esters as additives in rape seed oil

Li, Jiusheng; Wenqi, Rao; Ren, Tianhui; Fu, Xiaofeng; Liu, Weimin

doi:10.1002/jsl.3000200206

Cited by 7 publications

(2 citation statements)

References 1 publication

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“…30 percent reduction in coefficient of friction [12] is reported under sunflower oil as lubricant with coated tools compared to mineral oil. Phosphate esters with rapeseed oil exhibit about 40% reduction in friction and wear values [13,14]. About 80% reductions in wear rate is reported for soybean and with amine phosphate as lubricant tested under tribology test rigs [15].…”

Section: Introductionmentioning

confidence: 94%

Tribological Studies on AISI 1040 with Raw and Modified Versions of Pongam and Jatropha Vegetable Oils as Lubricants

Shashidhara¹,

Jayaram²

2012

Advances in Tribology

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The friction and wear tests on AISI 1040 are carried out under raw, modified versions of two nonedible vegetable oils Pongam (Pongamia pinnata) and Jatropha (Jatropha curcas) and also commercially available mineral oil using a pin-on-disc tribometer for various sliding distances and loads. A significant drop in friction and wear for AISI 1040 is observed under Pongam and Jatropha raw oil compared to mineral oil, for the complete tested sliding distance and load, increasing the potential of vegetable oil for tribological applications. Stribeck curves are also drawn to understand the regimes of lubrication. Both the vegetable oils showed a clear reduction in the boundary lubrication regimes, leading to an early start of full film lubrication.

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Section: Introductionmentioning

confidence: 94%

Tribological Studies on AISI 1040 with Raw and Modified Versions of Pongam and Jatropha Vegetable Oils as Lubricants

Shashidhara¹,

Jayaram²

2012

Advances in Tribology

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“…The knowledge of the interaction of phosphate esters with iron-based surfaces begins with the work on vapor phase lubrication by Klaus [60]. A wide range of techniques have been used to Advances in Tribology the reactions and the structure of the films formed on the surface, including Fourier transform infrared spectroscopy (FT-IR) [61], nuclear magnetic resonance(NMR) [62], and surface methods including x-ray photoelectron spectroscopy (XPS) [63], Auger electron spectroscopy (AES) [64] and x-ray absorption near edge spectroscopy(XANES) [65]. These techniques have demonstrated that tricresyl phosphate forms a multilayer film on steel surfaces which acts as a lubricious polymer.…”

Section: Mechanism For the Modification Of Metal Surfaces By Phosphatmentioning

confidence: 99%

The Tribology and Chemistry of Phosphorus‐Containing Lubricant Additives

Johnson¹

2016

Advances in Tribology

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Phosphate esters, thiophosphate esters and metal thiophosphates have been used as lubricant additives for over 50 years. Recently, phosphorus-containing ionic liquids have emerged as a new class of lubricant additives. While the use of phosphorus compounds has been extensive, a detailed knowledge of how they work has been a much more recent development. In this chapter, the use of phosphate esters, thiophosphate esters, metal thiophosphates and phosphorus-containing ionic liquids as antiwear or extreme pressure additives is discussed. The primary emphasis will be on how they form a protective film, which is both durable and reduces friction. The first part of the chapter discusses the use of alkyl phosphates, triaryl phosphates and metal-containing thiophosphate esters with primarily iron-and steel-based bearing materials. The second part of the chapter examines phosphorus-containing ionic liquids and the challenges posed by new bearing materials with different surface chemistries.

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Eco‐Friendly Vegetable Oil‐Based Metalworking Fluid (MWFs) from Modification of Glycolyzed Products of Polyurethane

Negm

El-Sukkary

Sayed

et al. 2016

J Surfact & Detergents

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In order to produce environmentally friendly and efficient metalworking fluids and also to reduce the impact of waste polyurethane polymer in the environment, polyurethane polymers were recycled in a novel process. Waste polyurethane foam was glycolyzed using polyethylene glycol 400 to give the glycolyzed product (GPU). The GPU was esterified using oleic acid, linoleic acid, and acids obtained from hydrolysis of rapeseeds oil, coconut oil, and castor oil to obtain GPUO, GPUL, GPUA, GPUB, and GPUC, respectively. The prepared additives were used as emulsifiers in the formulation for metalworking fluid application in the presence of rapeseed oil, coconut oil, and castor oil as environmentally friendly oils. The results showed good stability of the prepared water-vegetable oil emulsions. The pH, specific gravity, kinematic viscosity at 40 and 100°C, surface tension, and anticorrosion tests of the prepared formulation showed acceptable results compared with the published data for several metalworking fluid formulations.

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Tribological properties of phosphate esters as additives in rape seed oil

Abstract: Key wordsphosphate ester, additive, rape seed oil, four-ball tester, XPS

Cited by 7 publications

References 1 publication

Tribological Studies on AISI 1040 with Raw and Modified Versions of Pongam and Jatropha Vegetable Oils as Lubricants

Tribological Studies on AISI 1040 with Raw and Modified Versions of Pongam and Jatropha Vegetable Oils as Lubricants

The Tribology and Chemistry of Phosphorus‐Containing Lubricant Additives

Eco‐Friendly Vegetable Oil‐Based Metalworking Fluid (MWFs) from Modification of Glycolyzed Products of Polyurethane

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