Water-glycol fire-resistant hydraulic fluid

A technology of ethylene glycol and hydraulic fluid, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problem that the test conditions are not harsh enough, and achieve good defoaming performance, excellent anti-wear performance, and enhanced high-pressure anti-wear performance Effect

Inactive Publication Date: 2011-06-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the anti-wear performance of water-glycol hydraulic fluid reported in foreign patents has passed the Vickers 104C vane pump bench test (ASTM D2251), the test pressure only reaches 7MPa, and the test conditions are not harsh enough

Method used

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  • Water-glycol fire-resistant hydraulic fluid
  • Water-glycol fire-resistant hydraulic fluid
  • Water-glycol fire-resistant hydraulic fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The following components and their contents (parts by weight) are formulated into water-ethylene glycol fire-resistant hydraulic fluid according to conventional techniques.

[0018] Deionized water 39.78, ethylene glycol balance, ethylene oxide and propylene oxide copolymer (EmkaroxHV45) 14, 2-mercaptobenzothiazole 0.1, capric acid 2.5, caprylic acid 0.5, monoisopropanolamine 1.0, N, N-dimethylethanolamine 2.0, 1,2,4-triazole 0.1, edetate disodium 0.01, benzoic acid 0.005, defoamer (DOWFS1224) 0.005. The kinematic viscosity of ethylene oxide and propylene oxide copolymer at 100°C is 2000mm 2 / s.

Embodiment 2

[0020] The following components and their contents (parts by weight) are formulated into water-ethylene glycol fire-resistant hydraulic fluid according to conventional techniques.

[0021] Deionized water 40, ethylene glycol balance, ethylene oxide and propylene oxide copolymer (EmkaroxHV45) 14, 2-mercaptobenzothiazole carboxylic acid derivative 0.1, capric acid 1.5, monoisopropanolamine 1.0, N , N-dimethylethanolamine 2.0, 3-amino-1,2,4-triazole 0.1, disodium edetate 0.02, benzoic acid 0.018, defoamer (DOWFS1224) 0.002. Ethylene oxide and propylene oxide copolymer has a kinematic viscosity of 7000mm at 100°C 2 / s.

Embodiment 3

[0023] The following components and their contents (parts by weight) are formulated into water-ethylene glycol fire-resistant hydraulic fluid according to conventional techniques.

[0024] Deionized water 37, ethylene glycol balance, deionized water 37, water-soluble polyether (EmkaroxHV45) 13.76, 2-mercaptobenzothiazole 0.1, capric acid 2.5, caprylic acid 0.5, monoisopropanolamine 1.0, N, N -Dimethylethanolamine 2.0, methylbenzotriazole 0.1, edetate disodium 0.017, benzoic acid 0.02, defoamer (DOWFS1224) 0.003.

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Abstract

The invention relates to a water-glycol fire-resistant hydraulic fluid. The water-glycol fire-resistant hydraulic fluid comprises the following components in percentage by weight: 37 to 42 percent of water, 12 to 15 percent of the balance of glycol or diethylene glycol and water-soluble polyether tackifier, 0.1 to 0.2 percent of sulfur-containing extreme pressure antiwear additive, 1.0 to 3.0 percent of antiwear additive formed by capric acid or the compounding of the capric acid and caprylic acid, 1.5 to 3.0 percent of at least one amine type antirust agent, 0.1 to 0.3 percent of metal passivator, 0.01 to 0.02 percent of ethylenediaminetetraacetic acid disodium, 0.005 to 0.02 percent of benzoic acid, and 0.002 to 0.005 percent of defoaming agent. The water-glycol fire-resistant hydraulic fluid has the characteristics that: the product has strong high-pressure abrasion resistance, and still has good lubricating property under high-pressure working conditions; and a Vickers 104C vane pump bench test (ASTM D7043) with test pressure of 14MPa prove that the abrasion of a vane pump is less than 100mg.

Description

technical field [0001] The invention relates to a high-performance water-ethylene glycol fire-resistant hydraulic fluid with good defoaming performance and excellent anti-wear performance, which is used as a hydraulic transmission medium. Background technique [0002] In order to improve the lubricating performance and service life of water-glycol hydraulic fluid, in order to meet the requirements of the continuous development of modern hydraulic equipment under high-pressure conditions, in recent years, domestic and foreign water-glycol hydraulic fluid formulations and additive technologies have made a lot of progress. new progress. Such as: U.S. Patent discloses a water-ethylene glycol hydraulic fluid (US5021181 (1991)), containing 2-15% C 10-22 The fatty acid is lower than the KOH that neutralizes the amount of fatty acid, and nitrogen-containing organic substances such as morpholine and cyclohexylamine are added to adjust the pH value, so that the pH value of the hydrau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10N40/08C10N30/06C10N30/18
Inventor 郑东东王辉李韶辉郝玉杰梁德君孙旭日李春诚吴福丽刘庆国黄东升王春晓
Owner PETROCHINA CO LTD
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