Water Rejection of Vegetable Oil Base Stocks for Tractor/Hydraulic Fluids

Rhodes, Blaine; Mammel, W. C.; Landis, Phillip S.; Erickson, Frank L.

doi:10.4271/952073

Cited by 9 publications

(6 citation statements)

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“…Further weakness of vegetable oils is their tendency to hydrolyze in the presence of water [41]. The presence of ester functionality groups renders these oils susceptible to hydrolytic breakdown [42], therefore, contamination with water in the form of emulsion must be prevented at every stage. Vegetable oils also show poor corrosion protection especially when moisture is present [43].…”

Section: Poor Hydrolytic Stabilitymentioning

confidence: 99%

Vegetable Oil Based Lubricants: Challenges and Prospects

et al. 2019

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Lubricants are very important consumables in all industries as failure in machine parts due to absence or wrong choice of lubricants carries enormous cost. The base oil used for the formulation of most lubricants is environmentally hostile mineral oil and 30% of lubricants consumed ends up in the ecosystem. However, mineral oil reserve is depleting and the environmental concern about the damaging impact of mineral oil is growing. The search for environment friendly substitutes to mineral oils as base oils in lubricants has become a frontier area of research in the lubricant industry. Vegetable oils are perceived to be alternatives to mineral oils for lubricant base oils due to certain inherent technical properties and their ability to be biodegradable. This paper is an overview of recent research on vegetable oils as base oil for lubricant production with focus on the prospects, challenges and efforts to overcome the challenges of using vegetable oils as base oil for the production of industrial lubricants. Compared to mineral oils, vegetable oils in general possess high flash point, high viscosity index, high lubricity, low evaporative loss, are renewable, and are environmentally friendly. Poor oxidative and hydrolytic stability, high cost, food versus energy debate, high temperature sensitivity of tribological behaviour and poor cold flow properties are reckoned to be the limitations of vegetable oils for their use as base oils for industrial lubricants. The current effort to overcome these limitations includes the use of non edible oils, additives, chemical modifications and thermal modifications. More research and legislation in favour of the use of vegetable oil lubricants is recommended.

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Section: Poor Hydrolytic Stabilitymentioning

confidence: 99%

Vegetable Oil Based Lubricants: Challenges and Prospects

et al. 2019

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“…The ester functionality present in the triacylglycerol structure renders these oils susceptible to hydrolytic breakdown (42). Therefore, at every stage, contamination with water in the form of emulsions must be prevented.…”

Section: Introductionmentioning

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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“…Vegetable oils also show poor corrosion protection (13). The ester functionality present in the triacylglycerol structure renders these oils susceptible to hydrolytic breakdown (14). Therefore, contamination with water in the form of emulsions must be prevented at every stage.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Hydroxy Thio-ether Derivatives of Vegetable Oil

Sharma

Adhvaryu

Erhan

2006

J. Agric. Food Chem.

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Bio-based additives are desirable commodities due to their eco-friendly nature. These additives can demonstrate physical and chemical properties comparable to those of conventional mineral oil-based products. Sulfur incorporated triacylglycerol can function as an antiwear/antifriction additive for lubricants. The synthesis of four useful hydroxy thio-ether derivatives of vegetable oils, from commercially available epoxidized soybean oil and common organic thiols, is reported in this paper. The common thiols used herein were 1-butanethiol, 1-decanethiol, 1-octadecanethiol, and cyclohexyl mercaptan. Currently, there is no reported literature describing the synthesis of hydroxy thio-ether derivatives of vegetable oil. The reaction was monitored, and products were confirmed by NMR and FTIR spectroscopies. Experimental conditions involving various thiols, solvent, catalyst amount, time, and temperature were optimized for research quantity and laboratory scale-up. The synthetic process retains the vegetable oil structure, eliminates polyunsaturation in the molecule, and adds polar functional groups on triacylglycerol. These products can be used as agriculturally-based antiwear additives for lubricant applications.

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Water Rejection of Vegetable Oil Base Stocks for Tractor/Hydraulic Fluids

Cited by 9 publications

References 0 publications

Vegetable Oil Based Lubricants: Challenges and Prospects

Vegetable Oil Based Lubricants: Challenges and Prospects

Lubricants from renewable energy sources – a review

Synthesis of Hydroxy Thio-ether Derivatives of Vegetable Oil

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