Tribological behavior of some antiwear additives in vegetable oils

Choi, Ung-su; Ahn, Byoung-Sung; Kwon, Oh‐Seung; Chun, Younghwa

doi:10.1016/s0301-679x(97)00039-x

Cited by 89 publications

(55 citation statements)

References 6 publications

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“…The two exothermic peaks starting at 140 • C for conventional tap oil (MO) in Fig. 12a arise as a result of the thermal decomposition of hydrocarbon molecules in the tap oil (Choi et al, 1997). For FA-MQL, the first exothermic peak was observed at 206 • C (Fig.…”

Section: Mql Fluid Effectsmentioning

confidence: 99%

Tapping of Al–Si alloys with diamond-like carbon coated tools and minimum quantity lubrication

Bhowmick

Lukitsch

Alpas

2010

Journal of Materials Processing Technology

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Section: Mql Fluid Effectsmentioning

confidence: 99%

Tapping of Al–Si alloys with diamond-like carbon coated tools and minimum quantity lubrication

Bhowmick

Lukitsch

Alpas

2010

Journal of Materials Processing Technology

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“…In the study conducted by Choi et al (24), tribological behavior of some antiwear additives in vegetable oils was studied. An additive, dibutyl 3,5-dit-butyl 4-hydroxy benzyl phosphonate (DBP), was synthesized.…”

Section: Synthesis Of Additives For Biolubricating Oilsmentioning

confidence: 99%

“…For many reactions, unsaturated double bonds in the fatty acids act as active sites. There are two major problems associated with vegetable oils as functional fluids offer low resistance to thermal oxidative stability (9,(22)(23)(24)(25)(26)(27)(28)(29)(30) and poor low-temperature properties (24,25,29,(31)(32)(33)(34).…”

Section: Introductionmentioning

confidence: 99%

Lubricants from renewable energy sources – a review

Soni

Agarwal

2014

Green Chemistry Letters and Reviews

107

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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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“…In these applications, successful lubrication is assured due to the presence of extreme pressure (EP) additives. For tribological processes involving steel surfaces, chlorinated, sulfurized, and phosphorous-containing organic materials are frequently used as EP additives [6,7]. It is assumed that these EP additives, through tribochemical reactions, form layers of iron compounds such as chlorides, sulfides, and phosphates, respectively [8].…”

Section: Introductionmentioning

confidence: 99%

Effects of Chlorinated Paraffin and ZDDP Concentrations on Boundary Lubrication Properties of Mineral and Soybean Oils

Asadauskas¹,

Biresaw

McClure

2009

Tribol Lett

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Concentration effects of chlorinated paraffin and zinc di-ethylhexyl dithio phosphate on boundary lubrication properties were tested in vegetable and mineral base stocks. Solvent refined low sulfur paraffinic mineral oil (150 N oil) and conventional food grade soybean oil (soy oil) with EP additive concentration of 0-20% (w/w) were used in ASTM D2783 four-ball extreme pressure (4-ball EP) and Twist Compression Tribotests (TCT). Weld points in 4-ball EP and times to failure in TCT at 200 MPa showed that 150 N oil needed more than double treat levels of EP additives to achieve similar boundary lubrication performance as their 5% blends in soy oil. Also, incorporation of 20% soy oil into 150 N oil-based EP additive blends improved the performance to nearly the same level as soy oil only blends of corresponding additives. Boundary lubricity of some soy oil samples was similar to that of a commercial straight oil chlorinated metal forming lubricant. Several suggestions are provided to explain such pronounced influence of the base stock type on EP additive response. The findings suggest that soy oil and other farm-based oils may provide strategies for formulating cost effective industrial fluids and other lubricants.

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Tribological behavior of some antiwear additives in vegetable oils

Cited by 89 publications

References 6 publications

Tapping of Al–Si alloys with diamond-like carbon coated tools and minimum quantity lubrication

Tapping of Al–Si alloys with diamond-like carbon coated tools and minimum quantity lubrication

Lubricants from renewable energy sources – a review

Effects of Chlorinated Paraffin and ZDDP Concentrations on Boundary Lubrication Properties of Mineral and Soybean Oils

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