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

Yaroslav Porfiryev; Sergey Shuvalov; Pavel Popov; Dmitry Kolybelsky; Daria Petrova; Evgenii Ivanov; Boris Tonkonogov; Vladimir Vinokurov

doi:10.1021/acsomega.9b04087

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

ACS Omega. 2020 May 19;5(21):11946-11954. doi: 10.1021/acsomega.9b04087. eCollection 2020 Jun 2.

Authors

Yaroslav Porfiryev¹, Sergey Shuvalov¹, Pavel Popov¹, Dmitry Kolybelsky¹, Daria Petrova^{2

3}, Evgenii Ivanov², Boris Tonkonogov², Vladimir Vinokurov²

Affiliations

¹ NC Rosneft-MP Nefteprodukt, PJSC, 40 Shosse Entuziastov, Moscow 105118, Russia.
² Gubkin University, 65 Leninsky Prospekt, Moscow 119991, Russia.
³ Moscow State University, GSP-1, Leninskie Gory, Moscow 119991, Russia.

Abstract

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.