Effect of Base Oil Nature on the Operational Properties of Low-Temperature Greases | Zendy

Yaroslav V. Porfiryev | Zendy; Sergey Shuvalov | Zendy; P. S. Popov | Zendy; Dmitry S. Kolybelsky | Zendy; Daria Petrova | Zendy; Е. В. Иванов | Zendy; B. P. Tonkonogov | Zendy; В. А. Винокуров | Zendy

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Effect of Base Oil Nature on the Operational Properties of Low-Temperature Greases

Author(s) -

Yaroslav V. Porfiryev,

Sergey Shuvalov,

P. S. Popov,

Dmitry S. Kolybelsky,

Daria Petrova,

Е. В. Иванов,

B. P. Tonkonogov,

В. А. Винокуров

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b04087

Subject(s) - base oil , pour point , viscosity index , viscosity , materials science , stearic acid , lithium (medication) , grease , dispersion (optics) , base (topology) , chemical engineering , atmospheric temperature range , composition (language) , asphaltene , organic chemistry , chemistry , thermodynamics , composite material , endocrinology , scanning electron microscope , medicine , mathematical analysis , linguistics , physics , mathematics , engineering , philosophy , optics

Studies of the physicochemical characteristics, group, and fractional composition of low-viscosity base oils with various nature were carried out. The influence of the composition of these oils on their low- and high-temperature characteristics was studied. Studies of the influence of the nature and composition of the dispersion medium on the physicochemical properties of low-temperature greases (LTG) thickened with lithium soap of stearic acid have been carried out. The possibility of expanding the operating temperature range and improving the antiwear properties of low-temperature greases through the combined use of low pour point mineral oil and high-index hydroprocessing oil has been found out. For the first time, the ability to predict the viscosity-temperature and tribological characteristics of lithium LTG based on standard methods for analyzing base oils are established.

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