Influence of dispersion medium on properties of complex lithium greases
This article investigates the properties of complex lithium (cLi) greases prepared by thickening various dispersion media, differing in hydrocarbon composition, with cLi soap (10% by weight). Distillate and residual oils produced in the USSR were used as the dispersion media. It is determined that the viscosity level of the dispersion medium does not determine the properties of the cLi greases. The presence of aromatic hydrocarbons in the distillate oils, as the content of aromatics is increased, tends to increase the viscosity-strength characteristics, increase the colloidal stability (lower the oil bleeding), reduce the heat-hardening, and give lower values of the viscosity-temperature characteristics of the greases. The quality of cLi greases based on distillate oils depends to a considerable degree on the hydrocarbon group composition of the oil and on the hydrocarbon structure. The greases based on residual oils have better rheological properties and serviceability at high temperatures than the greases based on distillate oils. It is recommended that residual oils be used as the dispersion medium for cLi greases operating at high temperatures. Includes 3 tables.
- Research Organization:
- All-Union Sci-Res. and Design Inst. of the Petroleum Refining and Petrochemical Industry
- OSTI ID:
- 6732546
- Journal Information:
- Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Vol. 19:8; Other Information: Trans. from Khimiya i Tekhnologiya Topliv i Masel, Aug 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GREASES
ADDITIVES
AROMATICS
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
HARDENING
HEAT TREATMENTS
HYDROCARBONS
LITHIUM
PETROLEUM DISTILLATES
PETROLEUM RESIDUES
QUALITY CONTROL
RHEOLOGY
SOAPS
STABILITY
TEMPERATURE DEPENDENCE
VISCOSITY
ALKALI METALS
CONTROL
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
LUBRICANTS
METALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
020500* - Petroleum- Products & By-Products