Preparation method of wear-resistant lubricating oil for engine

Abstract

The invention discloses a preparation method of wear-resistant lubricating oil for an engine. The method comprises the following steps: weighing the following materials in percentage by mass: 5.4%-8.6% of sulfurized cottonseed oil, 0.3%-1.2% of aminoethyl imidazoline quaternary ammonium salt, 0.2%-0.7% of tributyl phosphate, 2.1%-3.9% of N,N'-bis(salicylidene)-1,2-propanediamine, 2.5%-3.5% of graphite powder, 1.1%-1.5% of pentaerythritol, 0.3%-0.8% of triphenyl phosphate, 0.8%-1.7% of 2,6-di-tert-butyl-4-methylphenol, 3.2%-4.5% of nano-hydroxide, 0.1%-0.8% of petroleum calcium sulfonate, 0.2%-3% of polyisobutylene bis-succinimide, 0.02-0.05% of oxymolybdenum dialkyl dithiophosphate, 0.2%-0.5% of methylbenzotriazole and the balance of base oil; performing ultrasonic processing for 10-30 min, increasing temperature to 50-90 DEG C and performing heat preservation for 1-5 h; performing cooling to room temperature to obtain a finished product. Various physical and chemical indicators of thelubricating oil can be balanced automatically, the lubricating oil can keep the optimal working state for a longer time, the lowest consumption of the lubricating oil and true ultra-long oil draininginterval (20000 kg) are ensured, balanced nutritious maintenance is provided for a vehicle, and the comprehensive problems such as too much carbon deposit, high oil consumption and higher wear are solved.

Description

technical field [0001] The invention relates to a preparation method of wear-resistant lubricating oil for engines. Background technique [0002] Lubricating oil is a liquid lubricant used on various types of machinery to reduce friction and protect machinery and processed parts. It mainly plays the roles of lubrication, cooling, rust prevention, cleaning, sealing and buffering. Lubricating oil accounts for 85% of all lubricating materials, and there are many types and grades. The general requirements for lubricating oil are: ① Anti-wear and friction reduction, reduce frictional resistance to save energy, reduce wear to prolong mechanical life, and improve economic benefits; ② Cooling requires Discharge the frictional heat out of the machine at any time; ③Sealing requires anti-leakage, dust-proof, and anti-gas; ④Anti-corrosion and anti-rust, it is required to protect the friction surface from oil deterioration or external erosion; ⑤Clean and rinse, it is required to clean ...

AI Technical Summary

Problems solved by technology

The anti-oxidation performance of the current engine lubricating oil is not bad, but due to the high temperature generated by the engine during operation, the defoamer and anti-wear agent of the lubricant are easy to decompose in a high-temperature environment for a long time, resulting in The performance of all aspects is reduced, and the engine is easily damaged