Plant composite engine oil containing graphene and preparation method thereof

Abstract

The invention discloses plant composite engine oil containing graphene, which includes the following raw materials: castor oil, liquid graphene, modified castor oil, an antioxidant, an anti-corrosion agent, an anti-foam agent, an extreme pressure anti-wear agent, a pour point depressant, an anti-rust agent, a viscosity index improver, a dispersing agent, a cleaning agent, a lubrication modifier, an organic anti-aging agent, and modified nano cerium vanadate. By adding the liquid graphene to the plant composite engine oil, lubricating property of the engine oil is improved, wherein the mechanism of lubrication of the graphene is not same as that of an additive in the prior art. Because the molecular particle size of the graphene is very small, the graphene can generate a roll-ball effect during friction between a cylinder wall and a piston, thereby turning sliding friction into rolling friction, and also can flattening the uneven parts on the cylinder wall just like putty. The graphene, as an anti-wear agent, can promote low-viscosity engine oil better, and enables automobiles to be more energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a machine oil, in particular to a graphene-containing vegetable composite machine oil and a preparation method thereof. Background technique [0002] The main function of lubricating oil in machinery is to reduce friction and slow down wear, so as to ensure the effective and long-term operation of the machinery. The second is cooling. Work within a certain temperature range to prevent damage to parts due to rising temperature; in addition, it has protective, sealing and cleaning functions. The protective effect is to prevent the metal from being corroded by air and other chemical gases. The sealing effect refers to the lubricating oil used in the internal combustion engine, which can prevent the gas in the combustion chamber from entering the crankcase through the gap between the cylinder wall and the piston. The cleaning effect is that in the circulating lubrication system, the lubricating oil can wash away some wear debris ...

AI Technical Summary

Problems solved by technology

However, due to the continuous improvement of engine performance and output power in recent years, the service life of engine oil with common additives is still relatively short.

And the more severe operating conditions make the parts of the internal combustion engine wear more, the power of the internal combustion engine is insufficient, the fuel consumption is large, and the exhaust gas and noise are large when the motor vehicle is in use.

In addition, the existing composite additive composition still has disadvantages, for example, the overall dosage is large; the sensitivity to base oil is not strong, and a specific base oil is required; the functionality of the composite agent is not outstanding