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An oxidation-resistant long-life zinc-free hydraulic fluid composition and its preparation method

A long-life, composition-based technology, applied in the field of lubricating oil, can solve problems such as corrosion, and achieve the effects of long oxidation life, excellent oxidation resistance, and excellent oxidation resistance

Active Publication Date: 2022-04-22
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, some hydraulic systems use parts containing copper and silver, and hydraulic oil containing zinc will cause corrosion to parts containing copper and silver

Method used

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  • An oxidation-resistant long-life zinc-free hydraulic fluid composition and its preparation method
  • An oxidation-resistant long-life zinc-free hydraulic fluid composition and its preparation method
  • An oxidation-resistant long-life zinc-free hydraulic fluid composition and its preparation method

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Effect test

Embodiment 1

[0061] This embodiment relates to an oxidation-resistant long-life zinc-free hydraulic fluid composition, including the following components:

[0062]

[0063] The preparation method of the above-mentioned hydraulic fluid composition is that various additives are sequentially added into the base oil composition, and stirred at 60° C. for 2 hours to obtain.

[0064] Take 69.379Kg hydrogenated base oil-1 and 30Kg alkyl naphthalene base oil respectively to form the base oil composition. Take zinc-free hydraulic oil multifunctional additive ( 544) 0.3Kg, amine antioxidant (T557) 0.1Kg, phenolic antioxidant (L118) 0.2Kg, metal deactivator (thiadiazole derivatives) 0.01Kg, pour point depressant (polymethacrylate ) 0.01Kg, anti-foaming agent (simethicone) 0.001Kg, sequentially added to the base oil composition, stirred at 60 ° C for 2 hours, and made into the product of the present invention.

Embodiment 2

[0066] This embodiment relates to an oxidation-resistant long-life zinc-free hydraulic fluid composition, including the following components:

[0067]

[0068]

[0069] The preparation method of the above-mentioned hydraulic fluid composition is that various additives are sequentially added to the base oil composition, and stirred at 60° C. for 2.5 hours to obtain.

Embodiment 3

[0071] This embodiment relates to an oxidation-resistant long-life zinc-free hydraulic fluid composition, including the following components:

[0072]

[0073] The preparation method of the above-mentioned hydraulic fluid composition is that various additives are sequentially added to the base oil composition, and stirred at 55° C. for 2 hours to prepare the product of the present invention.

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Abstract

The invention relates to an oxidation-resistant long-life zinc-free hydraulic fluid composition, which uses a highly refined base oil and an alkylnaphthalene base oil composition as the base oil, and is compatible with zinc-free hydraulic oil multifunctional additives, phenolic antioxidants, and amines. Antioxidant, metal deactivator, pour point depressant and other antifoaming agent. The oxidation-resistant long-life zinc-free hydraulic fluid composition of the present invention can be widely used in various hydraulic systems under severe working conditions, heavy loads, high oil temperature and other working conditions, such as construction machinery and marine engineering equipment working in the field , port machinery, etc., and is especially suitable for lubrication and sealing of hydraulic systems that require long oil change intervals and contain copper and silver components.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to an oxidation-resistant long-life zinc-free hydraulic fluid composition. Background technique [0002] With the continuous development of modern hydraulic technology, the working pressure of the hydraulic system is getting higher and higher, the oil tank is getting smaller and smaller, and the working temperature is getting higher and higher, which also puts forward higher requirements for the durability and oxidation resistance of hydraulic oil. At the same time, with the enlargement of construction machinery and other equipment, the continuous increase of the working load, and the continuous improvement of the working time, the users of construction machinery have also put forward more requirements on the oxidation resistance and service life of the hydraulic oil used for their equipment. high demands. [0003] On the other hand, some hydraulic systems use parts contain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N40/08C10N30/10
CPCC10M169/044C10M2229/041C10M2209/08C10M2219/106C10M2203/065C10M2205/02C10M2215/223
Inventor 刘卜瑜陈惠卿李永超桂砚楠汤涛李耿辉
Owner CHINA PETROLEUM & CHEM CORP
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