Lubricating grease composition used for electric tool cylinder, and preparation method thereof

Abstract

The invention relates to a lubricating grease composition used for an electric tool cylinder, and a preparation method thereof. The lubricating grease comprises the components of: (a) a base oil prepared from mixed materials of HVI oil or PAO, PAG and middle-viscosity dimethyl silicon oil; and (b) a lithium-type bentonite densifying agent. The lubricating grease can also comprise common additives. The three base oils are mixed in a vessel; the lithium-type bentonite densifying agent and a polar dispersing agent are added into the vessel, and the mixture is mixed and stirred; the materials are heated to a temperature approaching the boiling point of the polar dispersing agent; the heating speed is reduced, and the mixture is sufficiently stirred; when the polar dispersing agent is evaporated, heating and temperature maintaining are carried out; the mixture is then naturally cooled; the additives are added to the mixture and the mixture is stirred, the temperature is reduced and the mixture is homogenized; the mixture is fetched from the vessel, and is grinded, such that a lubricating grease finished product is obtained. As a result of durability tests, the product provided by the invention can satisfy the requirements of lubrication of various electric tools under different conditions. The product is especially suitable for lubrication and protection of light electric mallet cylinders and other electric mallet cylinders with relatively harsh working conditions.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a lubricating grease composition for electric tool cylinders with high temperature resistance and long service life and a preparation method thereof. Background technique [0002] In recent years, the annual production of electric tools in my country has been increasing year by year, and the export volume has accounted for 80% of the domestic annual output, and the export volume has accounted for more than 20% of the world's total sales of electric tools. The export varieties are mainly concentrated in electric hammers, electric drills, horns To the grinder, electric jigsaw and other products. At present, my country has become the main manufacturing base of electric tools in the world, and it is the largest producer and exporter of electric tools in the world. However, the development of grease for electric tools in my country is relatively slow, and most of them use li...

AI Technical Summary

Problems solved by technology

However, bentonite grease is a non-soap base grease without a fibrous structure. Its thickening into grease is due to the formation of a three-dimensional skeleton structure in the base oil by the bentonite particles, and the base oil is evenly filled in the three-dimensional skeleton gaps, thereby forming a non-Newtonian grease. The selection of additives is harsh and the compatibility is not good. Unsuitable additives will destroy the fat structure, showing oil-soap separation and reduced consistency.

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