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Motor vehicle brake fluid and preparation method thereof

A technology for motor vehicles and brake fluids, which is applied in the field of brake fluids and can solve problems such as inability to meet higher-level requirements.

Active Publication Date: 2022-02-18
北京蓝星清洗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the borate brake fluid disclosed in the patent application number CN03111222.6 improves the hygroscopicity of the brake fluid, has a higher equilibrium return boiling point and a lower viscosity, but the brake fluid disclosed in this patent It can only meet the requirements of the HZY4 level in the GB12981-2012 standard, and cannot meet the requirements of higher levels

Method used

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  • Motor vehicle brake fluid and preparation method thereof
  • Motor vehicle brake fluid and preparation method thereof
  • Motor vehicle brake fluid and preparation method thereof

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preparation example Construction

[0034] The present invention also provides a preparation method of the motor vehicle brake fluid described in the above technical solution, comprising the following steps:

[0035] Mix and dissolve triethylene glycol monoalkyl ether borate, polyethylene glycol monoalkyl ether, polyglycol, pH regulator, corrosion inhibitor, antioxidant and defoamer to obtain the motor vehicle brake fluid.

[0036] In the present invention, there is no special limitation on the order of mixing, as long as it can be mixed evenly. In the present invention, the mixing temperature is preferably 60-120°C, more preferably 65-110°C, and most preferably 70-100°C. In the present invention, the mixing is preferably carried out under stirring conditions, and the stirring speed is preferably not lower than 100r / min, more preferably 110-200r / min, most preferably 120-160r / min; the stirring The time is preferably 4 to 6 hours, more preferably 4.5 to 5.5 hours, and most preferably 5 hours.

[0037] After the m...

Embodiment 1

[0040] 800kg triethylene glycol methyl ether borate, 50kg triethylene glycol monomethyl ether, 60kg diethylene glycol, 55kg triethylene glycol, 10kg triethanolamine, 10kg benzotriazole, 10kg bisphenol A and 5kg methyl Silicone oil is mixed; the mixed solution is heated to 70° C. and then stirred for 5 hours at a rotation speed of 120 r / min to dissolve; the stirred solution is filtered, and the obtained filtrate is motor vehicle brake fluid.

Embodiment 2

[0042] 700kg triethylene glycol methyl ether borate, 50kg triethylene glycol monomethyl ether, 50kg triethylene glycol monoethyl ether, 35kg triethylene glycol monobutyl ether, 130kg diethylene glycol, 5kg triethanolamine, 5kg butylamine Mix ether, 5kg benzotriazole, 5kg borax, 10kg bisphenol A and 5kg methyl silicone oil; heat the mixture to 65°C and stir for 4.5h at a speed of 160r / min to dissolve; The solution is filtered, and the obtained filtrate is motor vehicle brake fluid.

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Abstract

The invention belongs to the technical field of brake fluids, and particularly relates to a motor vehicle brake fluid and a preparation method thereof. The invention provides motor vehicle brake fluid. The motor vehicle brake fluid comprises the following components in percentage by mass: 30-83% of triethylene glycol monoalkyl ether borate, 5-50% of polyethylene glycol monoalkyl ether, 9-30% of polyethylene glycol, 0.5-5% of a pH value regulator, 0.5-5% of a corrosion inhibitor, 0.5-5% of an antioxidant and 0.5-5% of a defoaming agent. The brake fluid provided by the invention has a relatively high dry-wet reflux boiling point and relatively low low-temperature viscosity under the combined action of triethylene glycol monoalkyl ether borate and polyethylene glycol monoalkyl ether with specific contents; meanwhile, under the combined action of the triethylene glycol monoalkyl ether borate, the polyethylene glycol monoalkyl ether and the polyethylene glycol with specific contents, the high adaptability to rubber is achieved, and the expansion effect on a rubber cup can meet the quality requirement of HZY5.

Description

technical field [0001] The invention belongs to the technical field of brake fluid, and in particular relates to a motor vehicle brake fluid and a preparation method thereof. Background technique [0002] Motor vehicle brake fluid, also known as brake fluid, is the working medium for transmitting pressure in hydraulic transmission. The equilibrium return boiling point and viscosity of motor vehicle brake fluid will affect the braking effect, thus directly affecting the driver's life safety. China has formulated a mandatory national standard GB12981-2012 for motor vehicle brake fluid. The GB12981-2012 standard stipulates four grades of motor vehicle brake fluid, which are HZY3, HZY4, HZY5 and HZY6 in order from low to high, and the higher the brake fluid grade, the better the braking effect. [0003] The brake fluids currently on the market are mainly synthetic brake fluids, including alcohol ether brake fluids and borate ester brake fluids. Alcohol-ether brake fluid has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/08C10N30/08C10N30/02C10N30/12
CPCC10M169/044C10M2201/04C10M2207/046C10M2207/024C10M2207/402C10M2227/061C10M2229/041C10M2215/066C10M2215/042C10M2215/223
Inventor 李海争王贻全单素灵张静邱雪梅王双田
Owner 北京蓝星清洗有限公司
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