Functional Characteristics of Electric Contact Grease

Abstract—

The article notes that the use of electric contact grease is one of the effective methods for improving the reliability of connections in electrical engineering, which is relevant due to the rapid development of electric transport and increasing requirements for the environmental friendliness of lubricants. Тhe production of grease, which, in addition to tribological efficiency, has electrically conductive properties in a tribosystem, can be achieved by providing a stable dispersed system with a high content of solid lubricants and electrically conductive components. The effect of introducing the electroconductive particles into the grease composition to provide electrically conductive properties was studied. Technological methods for obtaining the electric contact grease have been developed. It has been established that with an increase in the content of electroconductive filler in grease, the wear index and colloidal stability decrease with an increase in the dropping point and shear strength. The optimal content of the electroconductive filler was determined while maintaining the required tribological and physicomechanical characteristics of the electric contact grease. The prospects of using biodegradable oils as the basis for greases are noted.