Preparation method of low temperature resistant automobile brake fluid

A technology for automobile braking and low temperature resistance, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of poor high temperature resistance to air resistance, poor low temperature fluidity, corrosion of the braking system, etc., and achieve good high temperature resistance to air resistance and Low-temperature fluidity, simple preparation process, and the effect of ensuring the safety of automobile driving

Inactive Publication Date: 2017-03-22
CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: aiming at the disadvantages of existing automobile brake fluids, such as poor high-temperature gas resistance performance, poor low-temperature fluidity, poor corrosion and oxidation resistance to the braking system, and low anti-rust ability, provide a A method for preparing low-temperature-resistant automobile brake fluid. The invention uses olive leaves, Pittosporum leaves, wintersweet petals, and safflower Chinese herbal medicines to be mixed and dried, then ground into powder, then extracted with ethyl acetate in a water bath, and then The filtrate is collected by filtration, adsorbed by resin, and then eluted with deionized water and ethanol solution. The collected modified extract is reacted with propylene oxide, methanol, etc. in a nitrogen environment, and the pH is ad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First, according to the mass ratio of 1:1:1:1, olive leaves, Pittosporum leaves, wintersweet petals and safflower Chinese herbal medicine were mixed, washed and dried, dried at 65 ° C for 6 hours, put into a mortar and ground and Pass through a 40-mesh sieve to collect the mixed plant powder, mix the mixed plant powder with ethyl acetate at a mass ratio of 1:10, and extract in a water bath at 65°C for 2 hours; then, after the water bath extraction is completed, collect the filtrate by filtration and Placed in a macroporous adsorption resin, after standing for 1 hour, eluted with deionized water for 3 times, and then eluted with 10% ethanol solution for 3 times to collect the modified extract; Weigh 45 parts of propylene oxide, 15 parts of the modified extract prepared above, 5 parts of methanol and 0.5 parts of sodium hydroxide in an autoclave, blow nitrogen gas to a pressure of 0.3 MPa, seal the reaction at 195 °C for 2 hours, and then Stand to cool to room temperature...

example 2

[0021]Firstly, according to the mass ratio of 1:1:1:1, olive leaves, Pittosporum leaves, wintersweet petals and safflower Chinese herbal medicine were mixed, washed and dried, dried at 68°C for 7 hours, put into a mortar and ground and Pass through a 45-mesh sieve to collect the mixed plant powder, mix the mixed plant powder with ethyl acetate at a mass ratio of 1:10, and extract in a water bath at 70°C for 2 hours; after the water bath extraction is completed, collect the filtrate by filtration and Place it in a macroporous adsorption resin, let it stand for 1 hour, wash it with deionized water for 3 times, then wash it with 10% ethanol solution for 4 times, and collect the modified extract; Weigh 45 parts of propylene oxide, 18 parts of the modified extract prepared above, 7 parts of methanol and 0.8 parts of sodium hydroxide in an autoclave, blow nitrogen gas to a pressure of 0.4 MPa, seal and react at 198°C for 2 hours, and then Stand to cool to room temperature, adjust th...

example 3

[0024] Firstly, according to the mass ratio of 1:1:1:1, olive leaves, Pittosporum leaves, wintersweet petals and safflower Chinese herbal medicine were mixed and washed and dried. After drying at 70°C for 8 hours, they were put into a mortar for grinding and Sieve through a 50-mesh sieve to collect the mixed plant powder, mix the mixed plant powder with ethyl acetate at a mass ratio of 1:10, and extract in a water bath at 75°C for 3 hours; after the water bath extraction is completed, collect the filtrate by filtration and Placed in a macroporous adsorption resin, after standing for 2 hours, eluted with deionized water for 5 times, and then eluted with 10% ethanol solution for 5 times to collect the modified extract; Weigh 50 parts of propylene oxide, 20 parts of the modified extract prepared above, 8 parts of methanol and 1.0 part of sodium hydroxide in an autoclave, blow nitrogen gas to a pressure of 0.5 MPa, seal and react at 200°C for 3 hours, and then Stand to cool to roo...

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PUM

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Abstract

The invention discloses a preparation method of a low temperature resistant automobile brake fluid and belongs to the technical field of preparation of brake fluid. Olive leaves, pittosporum tobira leaves, wintersweet flower petals and Chinese herbal medicine of safflower carthamus are mixed, air-dried and milled into powder; then the powder and ethyl acetate are subjected to water-bath extracting treatment; then filtering is performed to collect filtrate, adsorption is performed through resin, and elution treatments are performed through deionized water and an ethanol solution to collect a modified extracting solution; the obtained modified extracting solution, epoxypropane, methyl alcohol and the like are subjected to sealing reaction, and the pH value is adjusted through glacial acetic acid to obtain a modified base fluid; the modified base fluid and boric acid are reacted to obtain a modified reaction fluid; methylbenzene is added into the modified reaction fluid for thermal reaction to obtain a mixed fluid; and finally, the mixed fluid, polyethylene glycol, sodium phosphate and the like are subjected to water-bath heating reaction, still standing and cooling are performed, and the low temperature resistant automobile brake fluid can be obtained. The low temperature resistant automobile brake fluid obtained through the preparation method has a good high-temperature anti-gas-blockage property and low-temperature fluidity, excellent anti-corrosion and anti-rust properties, fine oxidation resistance and wide application prospects.

Description

technical field [0001] The invention discloses a method for preparing low-temperature-resistant automobile brake fluid, which belongs to the technical field of brake fluid preparation. Background technique [0002] Over the past 30 years of reform and opening up, my country's economy has made remarkable achievements. The automobile industry, especially the automobile industry, has developed rapidly. The automobile industry has quickly become the pillar industry of our national economy. my country has become a veritable motor vehicle production and sales country in the world. As a working medium for transferring energy, automobile brake fluid is one of the main factors that directly affect the safety of vehicle braking. [0003] Automobile brake fluid, also known as brake fluid or brake fluid, is a functional fluid used to transmit pressure in the hydraulic braking system of an automobile to enable the wheel brake to achieve braking. It is an indispensable part of the brake...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/08C10N30/12C10N30/10C10N30/08C10N10/02
CPCC10M169/044C10M2201/085C10M2209/104C10M2215/042C10N2030/08C10N2030/10C10N2030/12C10N2040/08C10N2010/02
Inventor 高玉梅蒋玉芳薛蕾
Owner CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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