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

Wear ◽  
2009 ◽  
Vol 266 (9-10) ◽  
pp. 917-924 ◽  
Author(s):  
Yubin Sun ◽  
Litian Hu ◽  
Qunji Xue
Wear ◽  
2004 ◽  
Vol 256 (11-12) ◽  
pp. 1106-1113 ◽  
Author(s):  
Weijiu Huang ◽  
Bin Hou ◽  
Peng Zhang ◽  
Junxiu Dong

Wear ◽  
2005 ◽  
Vol 259 (1-6) ◽  
pp. 519-523 ◽  
Author(s):  
Hu Jianqiang ◽  
Zhu Huanqin ◽  
Wang Li ◽  
Wei Xianyong ◽  
Ji Feng ◽  
...  

Tribologia ◽  
2016 ◽  
Vol 266 (2) ◽  
pp. 61-72
Author(s):  
Rafał KOZDRACH

The paper discusses the influence of vegetable oil basis on lubricating properties of their selected compositions. Four vegetable oils were used for production of lubricating greases: rapeseed, sunflower, soybean, and castor, all thickened with modified silica of Aerosil® type. The tribological properties of lubricating greases based on vegetable oils were investigated. On their basis, the most beneficial compositions were selected. The tribological properties of greases were estimated via measurements of limiting load of wear (Goz/40), welding load (Pz), scuffing load (Pt), limiting load of scuffing (Poz), and the limiting pressure of seizure (Poz). Based on the obtained results, it may be concluded that the best antiwear properties were shown by the lubricating compositions based on rapeseed oil, whereas the best antiscuffing properties have compositions using castor oil as a disperse phase.


2017 ◽  
Vol 29 (6) ◽  
pp. 395-409 ◽  
Author(s):  
Mengnan Qu ◽  
Yali Yao ◽  
Jinmei He ◽  
Xuerui Ma ◽  
Shanshan Liu ◽  
...  

2021 ◽  
Vol 37 ◽  
pp. 00030
Author(s):  
Alexander P. Bychenin ◽  
Oleg S. Volodko ◽  
Denis N. Bazhutov

The paper analyzes the main applications of alternative fuels and lubricants in automotive vehicles, considers the possibility of using vegetable oils as a working fluid for hydraulic systems of agricultural machinery. Based on the laboratory findings, it states the ways to improve a lubrication formula based on rapeseed oil. The formula is proven to be optimal if it includes 88.9% rapeseed oil + 3.7% D-11 + 3.2% EFO + 4.197% graphite + 0.003% MS-200A, which is superior in tribological properties to MGE-46V hydraulic oil, and can be recommended for use in hydraulic systems of agricultural machinery as an alternative to mineral oils.


Tribologia ◽  
2021 ◽  
Vol 294 (6) ◽  
pp. 57-63
Author(s):  
Zbigniew Pawelec ◽  
Jarosław Molenda ◽  
Bernadetta Kaźmierczak

The article presents the tribological characteristics of plastic greases in which the dispersing phase was vegetable (rapeseed) oil or synthetic ester oil (Priolube). The lithium stearate was used as a thickener in an amount sufficient to obtain a composition in the second consistency class, and the functional additives were biocarbon produced in the process of pyrolysis of the following plant waste: flax straw, wheat straw, corn leaves and stalks, and cherry stones. The compositions containing 5% m/m of biocarbon were prepared and the influence of the type of biocarbon on the tribological properties of the obtained plastic greases was assessed. The tribological characteristics of the grease compositions were determined using the T-02 tester in accordance with the requirements of the relevant standards. The influence of the applied biocarbon on the anti-wear (Goz) and anti-seize (Pt, poz) properties of plastic greases made with vegetable and synthetic basis was determined. It was found that some of the biocarbon, especially those derived from the pyrolysis of corn waste, significantly improve the tribological properties of plastic greases, both those based on plant and synthetic sources.


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