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Motor-vehicle brake-fluid composition and preparation method thereof

A technology of composition and brake fluid, applied in the directions of lubricating composition, petroleum industry, base material, etc., can solve the problems of poor fluidity, failure of normal braking of motor vehicles, etc., and achieve good high temperature stability and excellent flow performance , the effect of good liquidity

Active Publication Date: 2014-11-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above-mentioned lubricating oil composition is applied to the brake fluid of a motor vehicle, the motor vehicle often causes air resistance in the brake fluid due to high temperature and frequent braking of the motor vehicle during driving, or the fluidity of the brake fluid changes due to extremely low temperature. Poor, the motor vehicle cannot brake normally

Method used

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

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preparation example Construction

[0046] The present invention also provides a kind of preparation method of motor vehicle brake fluid composition, comprises the following steps:

[0047] After mixing and stirring antioxidant, metal deactivator, corrosion inhibitor, antifoaming agent, polyalkylene glycol ether borate and polyalkylene glycol ether, and dehydrating, a motor vehicle brake fluid composition is obtained .

[0048] When the present invention prepares motor vehicle brake fluid composition, to said antioxidant, metal deactivator, corrosion inhibitor, antifoaming agent, polyalkylene glycol ether borate and polyalkylene glycol The mixing method of ether is not particularly limited, and it is preferably prepared according to the following method:

[0049] A) After mixing, stirring and dehydrating polyalkylene glycol ether borate and polyalkylene glycol ether, the first mixed liquid is obtained;

[0050] B) After mixing, stirring and dehydrating the antifoaming agent, antioxidant, metal deactivator, cor...

Embodiment 1

[0061] Add an appropriate amount of methyl silicone oil with a number average molecular weight of 200 and polyalkylene glycol ether JM220-3 with a number average molecular weight of 2400 into the homogenizer according to the raw material ratio in Table 1, and homogenize for 0.5 times at room temperature hour, the number-average molecular weight is 200 the methyl silicone oil is uniformly dispersed in the number-average molecular weight is 2400 polyalkylene glycol ether JM220-3 to make antifoaming agent stand-by;

[0062] According to the ratio of raw materials in Table 1, polyalkylene glycol ether JM-403 with a number average molecular weight of 275, polyethylene glycol monomethyl ether with a number average molecular weight of 165, and polyethylene glycol monomethyl ether with a number average molecular weight of 175 were prepared. Diethyl ether, polyethylene glycol monobutyl ether with a number average molecular weight of 210, polyalkylene glycol ether JM-200 with a number av...

Embodiment 2

[0066] Add an appropriate amount of methyl silicone oil with a number average molecular weight of 400 and polyalkylene glycol ether JM220-3 with a number average molecular weight of 2400 into the homogenizer according to the raw material ratio in Table 1, and homogenize for 0.5 times at room temperature. Hours, uniformly disperse methyl silicone oil with a number average molecular weight of 400 into polyalkylene glycol ether JM220-3 with a number average molecular weight of 2400 to prepare an antifoaming agent for use.

[0067] According to the ratio of raw materials in Table 1, polyalkylene glycol ether JM-403 with a number average molecular weight of 275, polyethylene glycol monomethyl ether with a number average molecular weight of 165, and polyethylene glycol monomethyl ether with a number average molecular weight of 175 were prepared. Diethyl ether, polyethylene glycol monobutyl ether with a number average molecular weight of 210, polyalkylene glycol ether JM-200 with a nu...

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Abstract

The invention provides a motor-vehicle brake-fluid composition. The composition comprises: 49 wt%-59 wt% of polyalkylene glycol ether, 40 wt%-50 wt% of polyalkylene glycol ether orthoborate, 0.1 wt%-3.0 wt% of an antioxidant, 0.01 wt%-0.5 wt% of a metal deactivator, 0.1 wt%-3.0 wt% of a corrosion inhibitor, and 0.0005 wt%-0.05 wt% of an anti-foaming agent. The prepared motor-vehicle brake-fluid composition provided by the invention has no vapor lock under a high-temperature condition, and has excellent flowing performance under a low-temperature condition; and all performances of the composition meet or exceed the indexes of GB12981-2021HZY6, and the composition is capable of transmitting brake energy normally under an extremely low-temperature condition.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle brake fluid, and in particular relates to a motor vehicle brake fluid composition and a preparation method thereof. Background technique [0002] Motor vehicle brake fluid is an important liquid pressure transmission medium prepared by adding mineral or synthetic base oils, antioxidants, metal anti-corrosion agents, etc., and is used in various hydraulic brake devices of motor vehicles. The braking energy applied by the outside to the main brake pump is transferred to the piston of the motor wheel brake pump through the brake fluid of the motor vehicle, and applied to the brake shoes through the movement of the piston of the motor wheel brake pump to realize the braking of the motor vehicle. Adding additives such as antioxidants and metal anti-corrosion agents to the locomotive brake fluid can prolong the service life of the spare parts of the brake system of the motor vehicle and the brake ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M107/00C10N40/08C10N30/10C10N30/12C10N30/14C10N30/18
Inventor 魏文红宗明曹毅李健孟艳
Owner CHINA PETROLEUM & CHEM CORP
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