Tribological properties and action mechanism of N,N-dialkyl dithiocarbamate-derived S-hydroxyethyl borate esters as additives in rapeseed oil

Sun, Yuan; Hu, Litian; Xue, Qunji

doi:10.1016/j.wear.2008.12.004

Cited by 52 publications

(39 citation statements)

References 7 publications

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“…It has been found that the compounds (67 and 68) with longer alkyl chains on borate have better anti-wear properties and stabilized friction coefficient, and with shorter alkyl chains on nitrogen of the dithiocarbamate group improve the anti-wear performance [135]. The similar N,N-dialkyl dithiocarbamatederived S-hydroxyethyl borate esters (69) can greatly improve the extreme pressure and anti-wear properties, but no improvement shown in friction reduction properties, which was similar to that of the above mentioned borate esters (67 and 68) [136].…”

Section: Boratesmentioning

confidence: 59%

A review of recent developments of friction modifiers for liquid lubricants (2007–present)

Zheng-lin¹,

2014

Current Opinion in Solid State and Materials Science

390

208

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Section: Boratesmentioning

confidence: 59%

A review of recent developments of friction modifiers for liquid lubricants (2007–present)

Zheng-lin¹,

2014

Current Opinion in Solid State and Materials Science

390

208

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“…The peak of Fe2p at about 709.64 eV is assigned to Fe 2 O 3 [7]. The B1s peak at 191.40 eV is assigned to B 2 O 3 [8,9].…”

Section: Xps Analysis Of the Worn Surfacementioning

confidence: 99%

The rheological and tribological properties of calcium sulfonate complex greases

2014

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Abstract:In this study, we synthesized two types of calcium sulfonate complex greases (barium soap and calcium soap) and investigated their physical, rheological, and tribological properties in detail. The test results showed that the evolution of their linear viscoelasticity functions with frequency were quite similar to those of traditional lubricating greases. Moreover, these two calcium sulfonate complex greases had good frictionreducing and antiwear properties at room temperature and at 150 °C . In addition, by adding an organic molybdenum compound (MoDTC) to the base greases, we obtained a very low friction coefficient (0.065) for one of the greases (calcium soap) at 400 N and 500 N (maximum Hertzian pressures of 3.47 GPa and 3.74 GPa, respectively) at 150 °C . X-ray photoelectron spectroscopy (XPS) analysis showed that the tribofilm was composed of some complex oxide species and CaCO 3 that had formed on the worn surface.

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“…The synthetic thiophosphates as additives in rapeseed oil at proper concentrations were found to show enhanced tribological properties. Besides these, Sun et al (109) synthesized and characterized four N,N-dialkyl dithiocarbamatederived S-hydroxyethyl borates with different carbon chains and investigated their performance as additives in rapeseed oil. These compounds improved the extreme-pressure and antiwear properties of oil.…”

Section: Synthesis Of Additives For Biolubricating Oilsmentioning

confidence: 99%

Lubricants from renewable energy sources – a review

Soni

Agarwal

2014

Green Chemistry Letters and Reviews

114

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Lubricant oils are known to decrease the friction coefficient between two contacting surfaces. It is essential for the correct function of almost the totality of mechanical machinery working in the entire world. Lubricant oils consist of about 80% of oily base stocks which attributes to their properties of viscosity, stability, and pour point to the lubricant plus additives supplemented to improve these properties. Petroleum lubricants are usually environmentally unacceptable due to their low biodegradability and toxicity. These oils contaminate the air, soil, and drinking water and affect human and plant life to a great extent. Thus, the demand for environmentally acceptable lubricants is increasing along with the public concerns for a pollution-free environment. Plant oils are promising as base fluid for biolubricants because of their excellent lubricity, biodegradability, viscosity-temperature characteristics, and low volatility. The purpose of this paper is to present a survey of the current status of biolubricating oil. This research provides an overview on the synthesis, tribochemical behavior; the effect of structure on friction/wear, load-bearing capacity, resistance to rise in specimen temperature, and varying response of antiwear/extreme-pressure additives in the presence of vegetable oil/derivative structures has also been discussed. Though a significant number of papers have been published in this area, there is still much to explore. A proper selection of base oil and additives is therefore essential for an efficient synthesis of biolubricating oil.

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Tribological properties and action mechanism of N,N-dialkyl dithiocarbamate-derived S-hydroxyethyl borate esters as additives in rapeseed oil

Cited by 52 publications

References 7 publications

A review of recent developments of friction modifiers for liquid lubricants (2007–present)

A review of recent developments of friction modifiers for liquid lubricants (2007–present)

The rheological and tribological properties of calcium sulfonate complex greases

Lubricants from renewable energy sources – a review

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