Flame-retarded lubricating grease and preparation method thereof

Abstract

The invention relates to flame-retarded lubricating grease and a preparation method thereof. The preparation method comprises the following technical steps: firstly, putting base oil and an inorganic thickening agent in an open reaction kettle for stirring and mixing, adding a dispersant after heating and heating again to take the mixture out of the kettle for use; secondly, mixing fatty acid calcium soap with the base oil, adding fatty acid lithium soap after heating, keeping heat, dehydrating and refining; finally, removing the materials to a middle kettle, lowering the temperature by cooling, stirring the materials with lubricating grease prepared by the inorganic thickening agent, adding an antioxidant, a flame retardant and an anti-rusting agent for homogenization and filtering to obtain finished products. The lubricating grease not only keeps various excellent properties of original general lithium grease, but also specially enhances the incombustible flame retardance of a 600 DGE C hot plate. Assessment of the properties of the flame-retarded lubricating grease shows that the flame-retarded grease lubricant has excellent mechanical stability, water resistance, lubricating property, anti-rusting property and flame retardance, long service life and low cost, and can replace general lithium grease used in coal mine, subway, metallurgy and other industries at present.

Description

technical field [0001] The invention relates to a flame-retardant lubricating grease and a preparation method thereof, which is a semi-solid lubricant, in particular to a flame-retardant general-purpose lithium-based lubricating grease. Background technique [0002] The use of flame-retardant materials to prevent and reduce fires has attracted more and more attention from our country, especially in underground coal mines, subways, metallurgy and other industries. Others such as mining wire and cable, transport tape, and belt conveyor rollers for coal mines are gradually required to use flame-retardant materials, and technical standards have been formulated. my country's coal industry formulated the standard for belt conveyor rollers in 2006. , The non-metallic idler cylinder and buffer idler apron stipulate the technical conditions for flame retardant performance, but the grease used has not yet stipulated the flame retardant requirements. However, it is understood that my co...

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Problems solved by technology

[0005] In Japanese Patent No. 29999533, No. 4-202497, it is disclosed that solid powder and other flame retardant compounds are added to the grease, but it is easy to block the pipeline during use and cause mechanical oil shortage lubrication

my country's patent ZL200610198455, 3 (applied by Japan Collaborative Grease) discloses adding extreme pressure additives to lithium-based grease to make it a self-extinguishing grease composition, but it still cannot solve the problem of spontaneous combustion of grease when heated, and it is stipulated that within 300 seconds Turn off the flame, if once the grease catches fire, it will spread quickly, causing the surrounding items to burn

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