Water-based hydraulic fluid anti-wear additive, namely carboxylic acid amine salt modified polyethylene oxide

Abstract

The invention discloses a water-based hydraulic fluid anti-wear additive, namely carboxylic acid amine salt modified polyethylene oxide. The carboxylic acid amine salt modified polyethylene oxide is prepared through the following steps: uniformly mixing carboxylic acid modified polyethylene oxide and fatty amine according to a certain ratio, carrying out stirring, carrying out a reaction at a normal temperature for 50-70 minutes, carrying out heating to 35-45 DEG C, and carrying out stirring for 50-70 minutes so as to obtain the carboxylic acid amine salt modified polyethylene oxide. The carboxylamine salt modified polyethylene oxide provided by the invention is used as the water-based hydraulic fluid anti-wear agent; a certain concentration of the anti-wear agent provided by the inventionis added into a water-ethylene glycol flame-retardant liquid base solution; in a four-ball experiment, the wear spot diameter is reduced by 60.0% at most; the maximum non-seizure load can be increased by 77.5% at most; the total wear weight loss in a vane pump friction experiment is only about 50 mg; and excellent wear resistance is achieved. The anti-wear agent provided by the invention enablesthe anti-wear performance of a hydraulic medium to be greatly improved, prolongs the service life of a hydraulic element and improves the working stability of a whole hydraulic system.

Description

technical field [0001] The invention relates to a carboxylic acid amine salt modified polyethylene oxide water-based hydraulic fluid anti-wear additive. Background technique [0002] The hydraulic fluid in the hydraulic system is used as the working medium to transmit power, and has the functions of lubrication, cooling, rust prevention and shock absorption. Due to the low flash point of petroleum-based hydraulic fluid, there is a fire hazard, especially in hydraulic systems working in high-temperature, flammable, and explosive environments. Water-based flame retardant hydraulic fluids have attracted widespread attention. Among them, HFC-based water-glycol type flame retardant hydraulic fluids have a long history of use, the fastest development, and the widest application. A working medium commonly used in hydraulic equipment in other industries. Compared with traditional petroleum-based hydraulic fluids, water-based hydraulic fluids have incomparable flame resistance and ...

AI Technical Summary

Problems solved by technology

In use, it was found that although these ammonium carboxylate salts had good results in the four-ball long grinding test, the stator and rotor of the vane pump were severely worn during the use of the vane pump.

It is believed that the carboxylic acid amine salts formed by these short-chain carboxylic acids and amine salts cannot form an effective protective film during the wear test of the vane pump due to the short chain length.

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