Biodegradable lubricating grease

Abstract

The invention relates to biodegradable lubricating grease which comprises the following components according to mass percent: 80%-85% of base oil, 12%-10% of a thickening agent and 8%-5% of other additives. Vegetable oil, fatty acid ester and poly-alpha-olefin (PAO) are compounded to form the base oil of the biodegradable and environment-friendly lubricating grease, and fatty acid or animal and vegetable oil lithium calcium soap is taken as the thickening agent. The biodegradable lubricating grease composition is good in combination property, and all performance indexes of the composition reach using requirements; organic copper and organic molybdenum are compounded to form an antioxidant, so that the biodegradable lubricating grease is good in internal synergistic effect, and the wear resistance and the high-temperature oxidation stability of the grease can be improved; and mechanical noises can be effectively reduced since the organic molybdenum is added into the lubricating grease. The biodegradable lubricating grease can meet increasingly stringent environmental protection and energy conservation requirements and is suitable for lubricating and sealing of various mechanical friction pairs.

Description

technical field [0001] The invention relates to a biodegradable lubricating grease which can meet the increasingly stringent environmental protection and energy saving requirements and is suitable for the lubrication and sealing of various mechanical friction pairs. Background technique [0002] Grease is a lubricating material between liquid and solid, and its output accounts for far less than lubricating oil in the entire lubricating product. However, the lubricating performance of grease is better than that of lubricating oil. At normal temperature, it can be adsorbed on the metal surface without flowing; when heated or mechanically affected, the grease becomes thinner and can lubricate the friction surface like a liquid. When heated When the action and mechanical action gradually diminish to disappear, the grease returns to its thick state. Because of this particularity, lubricating grease has been widely used in the fields of industry, agriculture, transportation, defe...

AI Technical Summary

Problems solved by technology

At present, the base oil used in grease is mainly mineral oil separated from petroleum. Mineral base oil has poor biodegradability and contains harmful substances such as polycyclic aromatic hydrocarbons.

During the use of lubricating grease, it will inevitably enter the environment due to penetration, leakage and overflow, causing pollution, destroying the ecological environment, and endangering human health

Mineral oil grease is not only difficult to biodegrade in the natural environment, but most of the various additives contained in it are either toxic or harmful to the environment

In addition, since lubricating grease is not as easy to recycle as lubricating oil, as people's awareness of environmental protection is increasing, the environmental pollution caused by lubricants has attracted widespread attention.

Images