Coal-based anti-wear hydraulic oil and preparation method thereof

An anti-wear hydraulic oil, coal-based technology, applied in the field of hydraulic oil, can solve the problems of improving the performance of anti-wear hydraulic oil, and achieve the effect of reducing oxidized deposits, reducing device wear and high cleanliness

Pending Publication Date: 2021-07-20
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the upgrade and performance improvement of anti-wear hydraulic oil products mainly lies in the update of additive types, which greatly limits the performance improvement of anti-wear hydraulic oil

Method used

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  • Coal-based anti-wear hydraulic oil and preparation method thereof
  • Coal-based anti-wear hydraulic oil and preparation method thereof
  • Coal-based anti-wear hydraulic oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The formulation of No. 1 coal-based anti-wear hydraulic oil is as follows (mass percentage):

[0034]

[0035] Add coal-based base oil A, coal-based base oil B, and modified rapeseed oil into a three-necked flask according to the above ratio to form a mixed base oil, and then continue to add additives according to the above ratio, wherein the composite antifoaming agent is dimethyl silicone oil and The mass ratio of polyacrylate is 1:1. Use a water bath to raise the temperature of the mixture to 60°C and stir it at a constant temperature for 2 hours under magnetic stirring. Finally, the mixture is filtered with medium-speed quantitative filter paper and the filtrate is No. 1 coal-based anti- Grind hydraulic oil.

Embodiment 2

[0037] The formula of No. 2 coal-based anti-wear hydraulic oil is as follows (mass percentage):

[0038]

[0039] Add coal-based base oil A, coal-based base oil B, and alkylnaphthalene synthetic oil to a three-necked flask according to the above ratio to form a mixed base oil, and then continue to add additives according to the above ratio, wherein the composite antifoaming agent is simethicone The mass ratio of polyacrylate and polyacrylate is 3:2. Use a water bath to raise the temperature of the mixture to 60°C and stir it at a constant temperature for 2 hours under magnetic stirring. Finally, the mixture is filtered with medium-speed quantitative filter paper and the filtrate is No. 2 coal base Anti-wear hydraulic oil.

Embodiment 3

[0041] The formulation of No. 3 coal-based anti-wear hydraulic oil is as follows (mass percentage):

[0042]

[0043]

[0044] Add coal-based base oil A, coal-based base oil B, and modified rapeseed oil into a three-necked flask according to the above ratio to form a mixed base oil, and then continue to add additives according to the above ratio, wherein the composite antifoaming agent is dimethyl silicone oil and The mass ratio of polyacrylate is 3:2. Use a water bath to raise the temperature of the mixture to 50°C and stir it at a constant temperature for 1.5 hours under magnetic stirring. Finally, the mixture is filtered with medium-speed quantitative filter paper and the filtrate is No. 3 coal base Anti-wear hydraulic oil.

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Abstract

The invention relates to hydraulic oil, in particular to coal-based anti-wear hydraulic oil and a preparation method thereof, and aims to solve the problems that in the prior art, the hydraulic oil is mainly prepared by adopting petroleum-based mineral oil as base oil and adding additives, wherein the performance improvement mainly lies in the updating of the types of the additives, and the improvement of the performance of the hydraulic oil is greatly limited. The invention provides coal-based anti-wear hydraulic oil. The coal-based anti-wear hydraulic oil is prepared from coal-based base oil A, coal-based base oil B, V-type base oil, an anti-wear agent, an antioxidant, an oiliness agent, an anti-rust agent and a composite anti-foaming agent; wherein the viscosity index of the coal-based base oil A is greater than 120, the kinematic viscosity at 40 DEG C is 40-50 mm2 / s, the pour point is lower than -30 DEG C, the saturated hydrocarbon content is greater than or equal to 99%, and the sulfur content is less than or equal to 0.0005%; the viscosity index of the coal-based base oil B is greater than 120, the kinematic viscosity at 40 DEG C is 30-35 mm2 / s, the pour point is lower than -30 DEG C, the saturated hydrocarbon content is greater than or equal to 99%, and the sulfur content is less than or equal to 0.0005%; and the V-type base oil is one or a mixture of two of modified rapeseed oil or alkyl naphthalene synthetic oil.

Description

technical field [0001] The invention relates to a hydraulic oil, in particular to a coal-based anti-wear hydraulic oil and a preparation method thereof. Background technique [0002] As an important part of hydraulic technology, hydraulic oil plays the roles of energy transmission, system lubrication, anti-corrosion, anti-rust and cooling in various hydraulic systems. Anti-wear hydraulic oil is mainly used in heavy-duty, medium-pressure and high-pressure hydraulic systems to ensure that the friction pairs in oil pumps, hydraulic motors, control valves and oil cylinders are normally lubricated and reduce wear under harsh conditions such as high pressure and high speed. [0003] Anti-wear hydraulic oil can be divided into two types according to the type of additive formula: one is a zinc-containing formula system with zinc dialkyldithiophosphate (ZDDP) as the main agent, and the other is an ashless formula system. Since the zinc in ZDDP has a corrosive effect on bronze parts,...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/08C10N30/06C10N30/02C10N30/10C10N30/12C10N30/18
CPCC10M169/048C10M2203/1006C10M2203/1025C10M2207/401C10M2203/065C10M2223/047C10M2215/065C10M2207/142C10M2207/127C10M2229/041C10M2209/084C10M2223/04C10M2207/283C10M2219/044
Inventor 冯弦韩伟杜宗罡史雪梅赵利华巨璐
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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