Iron-loaded graphene-based tungsten disulfide nano lubricant additive and preparation method thereof

Abstract

The invention relates to an iron-loaded graphene-based tungsten disulfide nano lubricant additive and a preparation method thereof. The preparation method comprises the following steps of adding a tungsten source and a sulfur source into water to be dissolved, then mixing a tungsten source aqueous solution and a sulfur source aqueous solution according to a certain proportion, and adjusting the mixed solution to be acidic, adding graphene oxide into the solution, carrying out ultrasonic treatment, and reacting under the conditions that the temperature is 170-200 DEG C and the pressure is 2-4 MPa, cooling the reaction liquid, and then centrifugally washing and freeze-drying to obtain the graphene oxide-based tungsten disulfide composite nanomaterial, adding the graphene oxide-based tungsten disulfide composite nanomaterial into a soluble ferric salt solution, carrying out ultrasonic treatment, heating to 80-100 DEG C, adding a strong alkali solution under a stirring condition to adjust the mixed solution to be neutral or alkaline, and carrying out a reflux reaction, after the reaction liquid is cooled, centrifugal washing and drying, finally, heating a dried product to 300-400 DEG C under the protection of nitrogen for calcination, and preparing the iron-loaded graphene-based tungsten disulfide nano lubricant additive.

Description

technical field

[0001] The application belongs to the technical field of lubricating oil additives, and in particular relates to an iron-loaded graphene-based tungsten disulfide nano-lubricant additive and a preparation method thereof. Background technique

[0002] Bearings and other components that need to use lubricants inevitably wear out during use. How to use lubricants to reduce wear and improve the service life of components is an urgent problem to be solved. A very small amount of additives in lubricants can improve their performance in various aspects such as water spray resistance, oxidation stability, extreme pressure and anti-wear properties, which is a key link in the upgrading of lubricant technology.

[0003] As a typical two-dimensional transition metal sulfide, tungsten disulfide (WS2) has a "sandwich" layered structure, and there is a weak van der Waals force between its layers, so it has good self-lubricating properties. Inside the tungsten single-layer s...

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