Multi-graded anti-wearing hydraulic oil composition and preparation method thereof

Abstract

The invention provides a multi-graded anti-wearing hydraulic oil composition and a preparation method thereof. The multi-graded anti-wearing hydraulic oil composition is prepared from the following components according to the total weight of 100%: (a) 85%-95%, preferably 88%-93%, of type III hydroisomerizing base oil; (b) 3%-5%, preferably 3%-4.5%, of a viscosity index improver; (c) 0.5%-4%, preferably 1.5%-3%, of an antioxidant; (d) 0.5%-5%, preferably 0.5%-2%, of an extremely pressure anti-wearing agent; (e) 0.002%-0.020%, preferably 0.005%-0.015%, of an anti-foaming agent; and (f) 0.5%-4%, preferably 1%-3%, of a cleaning dispersant. The product provided by the invention has relatively high comprehensive performance and low cost and has good viscosity-temperature characteristics, low-temperature flowability and oxidization stability; meanwhile, nano titanium dioxide which has dual advantages of fluid smoothing and solid smoothing is compounded with dialkyldithiophosphate, so that the product has good bearing capability and anti-wearing performance; and furthermore, when the product is used, the number of times of replacing oil can be reduced, so that the working efficiency of hydraulic machinery is improved and the aims of energy saving and environmental friendliness are realized.

Description

technical field [0001] The invention belongs to the field of hydraulic oil; in particular, it relates to a multi-stage anti-wear hydraulic oil composition and a preparation method thereof. Background technique [0002] Hydraulic transmission is a liquid transmission that converts, transmits, controls and distributes power (or energy) with pressurized liquid as the working medium. In mechanical transmission and control systems, especially with the standardization and serialization of various hydraulic components , Hydraulic technology is widely used in engineering machinery, machinery manufacturing, agricultural machinery, aerospace and other industries. However, the variability of the working environment of hydraulic machinery has brought great challenges to hydraulic oil. If the hydraulic oil can withstand the test of high pressure, high temperature, temperature change, and harsh environment, it needs to have excellent viscosity-temperature performance and high load-carryi...

AI Technical Summary

Problems solved by technology

[0004] At present, the challenges faced by multi-grade hydraulic oil research: (1) The conflict between viscosity and pour point, the higher the molecular weight of hydrocarbons, the greater the intermolecular force, the higher the viscosity, but the pour point increases, and the low temperature fluidity poor

(2) Conflict between oxidation stability and pour point. For hydrocarbon compounds with similar molecular weight, paraffins have better oxidation stability, but their pour point is higher; cycloalkanes and aromatics have good low-temperature fluidity, but insufficient oxidation stability.

Therefore, the development of multi-grade anti-wear hydraulic oil with high performance and low cost is also a great challenge in the research of multi-grade hydraulic oil.

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