The invention relates to electric lubricating
grease and a preparation method thereof, and in particular relates to electric lubricating
grease used for a terminal in the
electric locomotive and power industries and a preparation method thereof. A
fatty acid soap-type
thickening agent is weighed in proportion and is added into
base oil to be mixed, stirring and
slow heating are carried out, then the
base oil is continuously added, stirring and heating are continuously carried out, and then the
base oil is added, and mixing is carried out and homogenizing by virtue of a
homogenizer or
grinding by virtue of a
grinding machine is carried out, thus base ester is obtained; and an anti-oxidation additive, an anti-
corrosion additive, an anti-
rust additive, a conductive additive and an anti-static additive are sequentially added into the obtained base ester and mixed; and then the mixture is homogenized by virtue of the
homogenizer or ground by virtue of the
grinding machine; and finally filtering and packaging are carried out to obtain the electric lubricating
grease product. The lubricating grease provided by the invention has excellent conductive performance,
contact condition of an
electric contact is effectively improved, and
antiseptic and antirust performances of the
electric contact are obviously improved. The electric lubricating grease product can be widely applied to the
electric contact of an
electric locomotive and a power supply
system.