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A kind of preparation method of environment-friendly phosphate ester fire-resistant hydraulic oil

A phosphate ester and hydraulic oil technology, applied in the direction of lubricating compositions, etc., can solve the problems that TXP cannot meet the equipment requirements, high toxicity, poor hydrolytic stability and oxidation stability, etc., and achieve excellent oxidation stability and hydrolytic stability, spontaneous combustion The effect of high dot height and high volume resistivity

Active Publication Date: 2022-04-12
安徽中天石化股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main component of high-temperature phosphate ester fire-resistant hydraulic oil on the market is tris(xylyl) phosphate (TXP) (mass fraction greater than 95%), which has the problems of high toxicity, poor hydrolytic stability and oxidation stability.
With the rapid development of the power system and the enhancement of people's awareness of environmental protection, TXP gradually cannot meet the requirements of equipment

Method used

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  • A kind of preparation method of environment-friendly phosphate ester fire-resistant hydraulic oil
  • A kind of preparation method of environment-friendly phosphate ester fire-resistant hydraulic oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of an environment-friendly phosphate ester fire-resistant hydraulic oil, comprising the steps of:

[0031] Step S1: Add phenol, 1-phenoxy 2-propanol, and triethylamine into a 1000mL four-neck flask with a condenser tube and a thermometer, heat the system to 30°C under nitrogen protection, and drop liquid with 500mL constant pressure Add phosphorus oxychloride dropwise to the system through the funnel, and the dropping time is 0.5h. After the dropping is completed, the temperature of the system is raised to 60°C. The absorption of sodium solution produces hydrogen chloride gas;

[0032] Step S2: After no hydrogen chloride gas is produced, stop the reaction and carry out vacuum distillation to remove phenol and phosphorus oxychloride, and carry out distillation at a temperature of 150° C. and a pressure of 100 Pa to obtain phosphoric acid ester A1.

[0033] The formulation of the high-temperature flame-resistant phosphate ester hydraulic oil prepared...

Embodiment 2

[0037] A preparation method of an environment-friendly phosphate ester fire-resistant hydraulic oil, comprising the steps of:

[0038] Step S1: Add phenol, 1-phenoxy 2-propanol, and triethylamine into a 1000mL four-neck flask with a condenser tube and a thermometer, heat the system to 80°C under nitrogen protection, and drop liquid with 500mL constant pressure Add phosphorus oxychloride dropwise to the system through the funnel, and the dropping time is 3 hours. After the dropping is completed, the temperature of the system is raised to 110°C. The solution absorbs and produces hydrogen chloride gas;

[0039] Step S2: After no hydrogen chloride gas is produced, stop the reaction and carry out vacuum distillation to remove phenol and phosphorus oxychloride, and carry out distillation at a temperature of 200° C. and a pressure of 100 Pa to obtain phosphoric acid ester A2.

[0040] The formula for preparing high-temperature flame-resistant phosphate ester hydraulic oil with phosp...

Embodiment 3

[0044] A preparation method of an environment-friendly phosphate ester fire-resistant hydraulic oil, comprising the steps of:

[0045] Step S1: Add isooctyl alcohol, phenoxyethanol, and anhydrous magnesium chloride into a 1000mL four-neck flask with a condenser and a thermometer, heat the system to 80°C under nitrogen protection, and inject Phosphorus oxychloride was added dropwise for 5 hours. After the dropwise addition, the temperature was raised to 120°C. After holding for 2 hours, the temperature was raised to 250°C for 3 hours, and absorbed by sodium hydroxide solution to generate hydrogen chloride gas;

[0046] Step S2: After no hydrogen chloride gas is produced, stop the reaction and carry out vacuum distillation to remove phenol and phosphorus oxychloride, and carry out distillation at a temperature of 250° C. and a pressure of 10 Pa to obtain phosphoric acid ester B1.

[0047] The formulation of high temperature flame-resistant phosphate ester hydraulic oil prepared ...

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Abstract

The invention discloses a preparation method of an environment-friendly phosphate ester fire-resistant hydraulic oil. The environment-friendly phosphate ester is prepared by reacting phosphorus oxychloride, straight-chain alcohol and phenoxyalkyl alcohol under the action of a catalyst. Then use environment-friendly phosphate ester as base oil, add viscosity index improver, antioxidant, anticorrosion agent, acid scavenger, antifoam agent, dye and other additives and mix to prepare phosphate ester fire-resistant hydraulic oil. Phosphate ester fire-resistant hydraulic oil prepared using this phosphate ester as base oil is environmentally friendly, non-toxic, high spontaneous ignition point (greater than 600°C, up to 700°C), high volume resistivity, excellent oxidation stability and hydrolysis stability The characteristics meet the needs of the current market and have a good application prospect.

Description

technical field [0001] The invention relates to the technical field of high-temperature fire-resistant phosphate ester hydraulic oil, in particular to a preparation method of an environment-friendly fire-resistant phosphate ester hydraulic oil. Background technique [0002] Phosphate ester anti-fuel is a kind of synthetic lubricating oil, and its base oil mainly includes three kinds of trialkyl phosphate ester, triaryl phosphate ester and alkyl aryl phosphate ester. Among them, triaryl phosphates have higher viscosity and poorer viscosity-temperature performance than trialkyl phosphates with the same relative molecular weight, and are mostly used as industrial fire-resistant hydraulic fluids. Due to its good flame resistance and excellent wear resistance, it has an irreplaceable position in electric power, military, aircraft hydraulic systems, and high-temperature and high-pressure hydraulic systems near high-temperature heat sources and open flames. [0003] With the rapid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04
CPCC10M169/048C10M2223/0405C10M2209/084C10M2205/022C10M2205/026C10M2205/04C10M2215/062C10M2215/065C10M2207/283C10M2219/044C10M2207/24C10M2229/041
Inventor 高晓谋宋孟璐何甲生杨桂芳冯克权高荣权
Owner 安徽中天石化股份有限公司
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