Preparation method of low temperature resistant automobile brake fluid

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...

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 adjusted with glacial acetic acid to obtain a modified base. liquid, and then react it with boric acid in a nitrogen environment to obtain a modified reaction liquid, add toluene into the modified reaction liquid for heat preservation reaction, and prepare a mixed liquid, and finally react it with polyethylene glycol, sodium phosphate, etc. in a water bath for heating, A kind of low-temperature-resistant automobile brake fluid can be prepared after standing and cooling. The automobile brake fluid prepared by collecting plant wax and hydroxysafflower in the present invention is compounded and synthesized. The brake fluid prepared by the present invention has good high-temperature Anti-air resistance and low temperature fluidity, excellent anti-corrosion and anti-rust performance and good anti-oxidation performance, have broad application prospects