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Synthetic ester type fire resistant hydraulic oil

A technology of hydraulic oil and synthetic ester, applied in the field of hydraulic system, can solve the problems of limited bearing capacity, oxidation life of rotary oxygen bomb method less than 300 minutes, limitation, etc., and achieve the effect of improving bearing capacity

Active Publication Date: 2019-03-08
WUXI GAORUNJIE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent document CN102292424A discloses a flame-retardant hydraulic oil composition using trimethylolpropane oleate as the base oil. The wear scar diameter of the hydraulic oil is also greater than 0.3 mm, and it fails when the FZG test reaches level 11, and Oxidation life of rotary oxygen bomb method is less than 300 minutes
The above-mentioned flame retardant / flame retardant hydraulic oil has limited carrying capacity, which greatly limits its application in high-power, high-pressure mining equipment, ship equipment, and liquid iron and steel metallurgical equipment in high-temperature environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of synthetic ester type flame-resistant hydraulic oil, is prepared by the raw material of following percentage by weight: trimethylolpropane oleate (iodine number 80-90g I 2 / 100g) 96.478%, alkyl diphenol (Guan Huahui, model 702, chemical name: 4,4-methylene (2.6-di-tert-butylphenol)) 0.5%, sulfurized di-tert-butylphenol ( BASF, model L115) 1.0%, methyl benzotriazole 0.3%, octylbutyl diphenylamine 1.0%, phosphate ester (9-octadecen-1-ol phosphate) 0.2%, ethylene glycol / propylene glycol Copolymer (Lubrizol, model 5172) 0.02%, alkyl phosphate ammonium salt (Vanlube 672) 0.5%, compound antifoam agent (1# antifoam agent, the main components are polydimethylsiloxane and polyoxygen Propylene oxide ethylene glyceryl ether) 0.002%;

[0015] Preparation process: first add trimethylolpropane oleate into the reaction kettle, then add alkyldiphenol, sulfurized di-tert-butylphenol, tolyl benzotriazole, octylbutyl diphenylamine, Raise the temperature to 80-90°C, keep the tem...

Embodiment 2

[0017] A kind of synthetic ester type flame-resistant hydraulic oil, is prepared by the raw material of following percentage by weight: trimethylolpropane oleate (iodine number 80-90g I 2 / 100g) 97.743%, alkyl diphenol (Guan Huahui, model 702) 0.3%, sulfurized di-tert-butylphenol (BASF, model L115) 0.6%, methyl benzotriazole 0.2%, octyl Butyl diphenylamine 0.6%, phosphate ester (9-octadecen-1-ol phosphate) 0.15%, ethylene glycol / propylene glycol copolymer (Lubrizol, model 5172) 0.03%, alkyl phosphate ammonium salt ( Vanlube 672) 0.375%, composite antifoaming agent (1# antifoaming agent) 0.002%; The preparation process is identical with embodiment 1.

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Abstract

The invention discloses synthetic ester type fire resistant hydraulic oil. The synthetic ester type fire resistant hydraulic oil is prepared from the following components in percentage by weight: 96 to 98 percent of trimethylolpropane oleate, 0.1 to 0.7 percent of alkyl diphenol, 0.2 to 1.4 percent of sulfurized di-tert-butyl phenol, 0.05 to 0.3 percent of methylbenzotriazole, 0.2 to 1.4 percent of octylbutyldiphenylamine, 0.1 to 0.4 percent of phosphate, 0.001 to 0.05 percent of an ethylene glycol / propylene glycol copolymer, 0.25 to 1 percent of alkyl phosphate ammonium salt and 0.001 to 0.01percent of an antifoaming agent. Compared with existing fire resistant hydraulic oil, the synthetic ester type fire resistant hydraulic oil disclosed by the invention has a smaller wear spot diameter(less than or equal to 2.5 mm) and a higher FZG failure level (12 levels), and the oxidation life based on a rotary oxygen bomb method is longer than 400 min; and the synthetic ester type fire resistant hydraulic oil is very suitable for being applied to hydraulic systems in various high temperature, high pressure and severely cold working environments.

Description

technical field [0001] The invention belongs to the field of hydraulic systems, and in particular relates to a synthetic ester type fire-resistant hydraulic oil. Background technique [0002] Hydraulic oil is a hydraulic medium used in a hydraulic system that utilizes liquid pressure energy. It plays the role of energy transmission, system lubrication, anti-corrosion, rust prevention, and cooling in the hydraulic system. Due to the continuous increase in the operating pressure of the vane pump and plunger pump and the impact on The wear of the friction pair puts forward various demands on the hydraulic oil. Ordinary hydraulic oils often expose various problems during actual use, such as low flash point, poor lubricity, foam, large air release value, poor oxidation stability, etc., which greatly limit its application in high-power, high-pressure mines Equipment, ship equipment and liquid iron and steel metallurgical equipment under high temperature environment. [0003] Pat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/08
CPCC10M169/048C10M2207/023C10M2207/2815C10M2209/104C10M2209/105C10M2215/064C10M2215/223C10M2219/087C10M2223/04C10M2223/043C10M2229/041C10N2040/08C10M2209/108
Inventor 何盛俊李琦黄旻晔谷云陈伟涛
Owner WUXI GAORUNJIE CHEM
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