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Motor-vehicle brake-fluid composition and preparation method thereof

A composition and brake fluid technology, which is applied in lubricating compositions, petroleum industry, base materials, etc., can solve problems such as poor fluidity and abnormal braking of motor vehicles, and achieve good high temperature stability and excellent flow performance , does not produce the effect of air resistance

Active Publication Date: 2013-10-23
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 method for preparing a motor vehicle brake fluid composition, which includes the following steps:

[0047] After mixing antioxidants, metal deactivators, corrosion inhibitors, anti-foaming agents, polyalkylene glycol ether borate and polyalkylene glycol ether, and dehydrating, a motor vehicle brake fluid composition is obtained .

[0048] When preparing the automobile brake fluid composition of the present invention, the antioxidant, metal deactivator, corrosion inhibitor, anti-foaming agent, polyalkylene glycol ether borate and polyalkylene glycol There is no special restriction on the mixing method of the ether, and it is preferably prepared according to the following method:

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

[0050] B) After mixing the anti-foaming agent, antioxidant, metal deactivator, corrosion inhibitor, and the fir...

Embodiment 1

[0061] Add 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 to the homogenizer according to the raw material ratio in Table 1, and homogenize 0.5 times at room temperature. Hours, evenly disperse methyl silicone oil with a number average molecular weight of 200 into polyalkylene glycol ether JM220-3 with a number average molecular weight of 2400 to prepare an anti-foaming agent for use;

[0062] According to the raw material ratio 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 mono with a number average molecular weight of 175 Diethyl ether, polyethylene glycol monobutyl ether with a number average molecular weight of 210, polyalkylene glycol ether JM-200 with a number average molecular weight of 240, and pol...

Embodiment 2

[0066] Add 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 to the homogenizer according to the raw material ratio in Table 1, and homogenize 0.5 times at room temperature. After hours, evenly 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 anti-foaming agent for use.

[0067] According to the raw material ratio 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 mono with a number average molecular weight of 175 Diethyl ether, polyethylene glycol monobutyl ether with a number average molecular weight of 210, polyalkylene glycol ether JM-200 with a number average molecular weight of 240, a...

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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 fluids, and specifically relates to a motor vehicle brake fluid composition and a preparation method thereof. Background technique [0002] Motor vehicle brake fluid is based on mineral or synthetic base oil and is an important liquid pressure transmission medium prepared by adding antioxidants and metal anticorrosive agents. It is used in various motor vehicle hydraulic brake devices. The braking energy exerted on the main brake pump from the outside is transferred to the motor wheel brake pump piston through the motor vehicle brake fluid, and is applied to the brake shoe through the motor wheel brake pump piston movement to achieve motor vehicle braking. Adding antioxidants, metal anti-corrosion agents and other additives to the brake fluid of locomotives can prolong the service life of the brake system parts and brake fluid itself. Motor vehicle brake fluid should have excellent high te...

Claims

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Application Information

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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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