Results 1 to 10 of about 130 (112)

Comparative study on corrosion resistance and lubrication function of lithium complex grease and polyurea grease [PDF]

Friction, 2019
In this study, lithium complex grease (LCG) and polyurea grease (PUG) were synthesized using mineral oil (500SN) and polyalphaolefin (PAO40) as base oil, adsorbed onto lithium complex soap and polyurea as thickeners, respectively.
Xiangyuan Ye, Xiaoqiang Fan, Minhao Zhu
exaly   +3 more sources

Polyurea Thickened Lubricating Grease-The Effect of Degree of Polymerization on Rheological and Tribological Properties. [PDF]

Polymers (Basel), 2022
Lubricating greases based on urea thickeners are frequently used in high-performance applications since their invention in 1954. One property that has so far been neglected in the further development of these systems due to their low solubility and the resulting difficulty of analysis, is to better understand how the degree of polymerization affect ...
Jopen M, Degen P, Henzler S, Grabe B, Hiller W, Weberskirch R.   +5 more
europepmc   +4 more sources

Sustainable Polyurea Greases Based on Epoxidized Soybean Oil: Influence of Ureido Structure on Performance [PDF]

Molecules
In this study, sustainable polyurea greases were prepared using epoxidized soybean oil (ESO) as bio-based base oil, with octadecylamine (ODA) reacted with three diisocyanates: 4,4′-diphenylmethane diisocyanate (MDI), 1,6-hexamethylene diisocyanate (HDI),
Yifan Chen, Xiaoling Yao, Hongjiang Yu, Gaobo Lou   +3 more
doaj   +2 more sources

Tribological Behavior of WS₂ Nanoparticles as Additives in Calcium Sulfonate Complex–Polyurea Grease

Lubricants, 2023
In order to improve the tribological properties of calcium sulfonate complex–polyurea grease, WS2 nanoparticles were used as additives to prepare WS2 calcium sulfonate complex–polyurea grease.
Hong Zhang, Yimin Mo, Juncheng Lv, Jun Wang   +3 more
doaj   +2 more sources

Effects of Gold Mine Tailings as an Additive on the Tribological Performance of Lubricating Polyurea Grease

Lubricants
Lubricating greases with varying proportions of gold mine tailings or SiO2 as additives were prepared, and their friction and wear performance were evaluated using a four-ball tribometer.
Xiaodong Liu, Heping Wang, Rongshe Wang, Binglong Zhang, Jiqing Wang, Wei Wang, Xihong He   +6 more
doaj   +2 more sources

Modified Ni Nanoparticles as Additives in Various Greases: Assessment of Comparative Performance Potential

Lubricants, 2022
China’s rapid industrial development requires more energy consumption based on non-renewable energy resources. The energy consumption caused by unnecessary friction accounts for about 4.5% of the GDP in China.
Jiabei Wang, Hong Zhang, Wenjing Hu, Jiusheng Li   +3 more
doaj   +1 more source

Optimization of the Tribological Performance and Service Life of Calcium Sulfonate Complex—Polyurea Grease Based on Unreplicated Saturated Factorial Design

Lubricants, 2023
In order to further extend the service life of calcium sulfonate complex–polyurea grease (CSCPG) while ensuring its tribological performance, this article starts with the production of raw materials and the preparation process of the grease and explores ...
Hong Zhang, Yimin Mo, Qingchun Liu, Jun Wang, Qian Li   +4 more
doaj   +1 more source

Effects of Erucamide and N-phenyl-α-naphthylamine on the Friction and Torque Behaviors of Grease on Roller Bearings

Lubricants, 2023
To evaluate the impact of various proportions of erucamide and N-phenyl-α-naphthylamine on grease’s tribological performance for roller bearings, lithium complex grease (LCG) and polyurea grease (PG) were prepared with erucamide and N-phenyl-α ...
Qingchun Liu, Yimin Mo, Juncheng Lv, Hong Zhang   +3 more
doaj   +1 more source

Classification and spectrum optimization method of grease based on infrared spectrum

Friction, 2023
The infrared (IR) absorption spectral data of 63 kinds of lubricating greases containing six different types of thickeners were obtained using the IR spectroscopy.
Xin Feng, Yanqiu Xia, Peiyuan Xie, Xiaohe Li   +3 more
doaj   +1 more source

Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials

Lubricants, 2021
Greased bearings in electric motors (EMs) are subject to a wide range of operational requirements and corresponding micro-environments. Consequently, greases must function effectively in these conditions. Here, the tribological performance of four market-
Daniel Sanchez Garrido, Samuel Leventini, Ashlie Martini   +2 more
doaj   +1 more source