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A kind of motor vehicle brake fluid and preparation method thereof

A brake fluid and motor vehicle technology, applied in the field of brake fluid, can solve problems such as not being able to meet higher-level requirements

Active Publication Date: 2022-08-05
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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  • A kind of motor vehicle brake fluid and preparation method thereof
  • A kind of motor vehicle brake fluid and preparation method thereof
  • A kind of motor vehicle brake fluid and preparation method thereof

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preparation example Construction

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

[0035] Mixing and dissolving triethylene glycol monoalkyl ether borate, polyethylene glycol monoalkyl ether, polyethylene glycol, pH adjuster, corrosion inhibitor, antioxidant and defoamer to obtain the motor vehicle brake fluid.

[0036] In the present invention, the mixing order is not particularly limited, as long as the mixing can be uniform. In the present invention, the temperature of the mixing is preferably 60 to 120°C, more preferably 65 to 110°C, and most preferably 70 to 100°C. In the present invention, the mixing is preferably carried out under stirring conditions, and the stirring speed is preferably not less than 100 r / min, more preferably 110-200 r / min, and most preferably 120-160 r / min; the stirring The time is preferably 4-6h, more preferably 4.5-5.5h, most preferably 5h.

[0037] After...

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 The silicone oil is mixed; the mixed solution is heated to 70° C. and dissolved under stirring for 5 hours at a rotational speed of 120 r / min; the solution obtained by stirring 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 ether, 5kg of benzotriazole, 5kg of borax, 10kg of bisphenol A and 5kg of methylsilicone oil were mixed; the mixture was heated to 65°C and dissolved under stirring for 4.5h at a rotational speed of 160r / min; The solution is filtered, and the obtained filtrate is a motor vehicle brake fluid.

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Abstract

The invention belongs to the technical field of brake fluid, and particularly relates to a vehicle brake fluid and a preparation method thereof. The motor vehicle brake fluid provided by the present invention includes the following components by mass percentage: 30-83% triethylene glycol monoalkyl ether borate, 5-50% polyethylene glycol monoalkyl ether, 9 ~30% polyglycol, 0.5~5% pH adjuster, 0.5~5% corrosion inhibitor, 0.5~5% antioxidant and 0.5~5% defoamer. The brake fluid provided by the invention has higher dry and wet reflux boiling point and lower boiling point under the combined action of a specific content of triethylene glycol monoalkyl ether borate and polyethylene glycol monoalkyl ether. At the same time, under the combined action of a specific content of triethylene glycol monoalkyl ether borate, polyethylene glycol monoalkyl ether and polyethylene glycol, it has high adaptability to rubber, and is suitable for rubber cups. The expansion effect can meet the quality requirements of HZY5.

Description

technical field [0001] The invention belongs to the technical field of brake fluid, and particularly relates to a vehicle brake fluid and a preparation method thereof. Background technique [0002] Motor vehicle brake fluid, also known as brake fluid, is a working medium that transmits pressure in hydraulic transmission. The equilibrium reflux boiling point and viscosity of motor vehicle brake fluid will affect the braking effect, thus directly affecting the life safety of the driver. China has formulated a mandatory national standard GB12981-2012 for motor vehicle brake fluid. The GB12981-2012 standard specifies 4 grades of motor vehicle brake fluid, which are HZY3, HZY4, HZY5 and HZY6 from low to high. The higher the brake fluid grade, the better the braking effect. [0003] At present, the brake fluids on the market are mainly synthetic brake fluids, including alcohol ether type brake fluids and borate type brake fluids. The alcohol ether type brake fluid has the advan...

Claims

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Application Information

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Patent Type & Authority Patents(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