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Lubricating agent used for disc-type brake pad of automobile and guide pin of brake cylinder of automobile

A brake cylinder and lubricant technology, applied in lubricating compositions, petroleum industry, etc., can solve the problems of thinning and loss of ordinary lithium-based grease, low operating temperature, shortened maintenance period, etc., and achieve excellent high temperature wear resistance and anti-seize performance. , The effect of improving high temperature wear resistance and small low temperature starting torque

Active Publication Date: 2019-08-27
大锦(广州)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ordinary lithium-based grease is applied to these parts during assembly and maintenance of automobile brake pads. Due to the poor temperature resistance and wear resistance of ordinary lithium-based grease, there will be the following problems: the use temperature is low, Generally, it will not exceed 120°C. Ordinary lithium-based grease will quickly become thinner and lose at high temperature, which has no effect on improving safety performance. Some may drip on the brake disc after high temperature, and it will slip when braking, causing Serious potential safety hazard, causing serious loss to life and property
After formula improvement by those skilled in the art, a variety of high-temperature lubricants without dropping point have appeared on the market to replace ordinary lithium-based grease. Although great technical improvements have been made in high-temperature loss, there are still thinning and oil-powder separation. , Short service life leads to shortened maintenance cycle and other defects

Method used

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  • Lubricating agent used for disc-type brake pad of automobile and guide pin of brake cylinder of automobile
  • Lubricating agent used for disc-type brake pad of automobile and guide pin of brake cylinder of automobile
  • Lubricating agent used for disc-type brake pad of automobile and guide pin of brake cylinder of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the lubricant used for automobile disc brake pads and brake cylinder guide pins is as follows:

[0026] S1. Add 47.5 parts of polymethylsiloxane, 3 parts of polyethylsiloxane, and 4 parts of hydroxysiloxane according to the raw material ratio of the lubricant, and add them to the container at the same time, and heat up to 115°C while stirring After that, stop heating and keep the temperature constant for 10 minutes;

[0027] S2. Add 5 parts of hydrophobic fumed silica and 1 part of polyurethane to the container of S1, and expand for 30 minutes;

[0028] S3, 30 parts of zinc oxide, 5 parts of light calcium carbonate are added in S2 step, after stirring evenly, grind 2 times, obtain mixture A;

[0029] S4. Pour mixture A into a high-speed dispersing kettle, add 5 parts of alumina, 5 parts of titanium nitride, 1 part of Tween 80, 0.5 part of Span 40, control the speed at 1500r / min, disperse at high speed for 40 minutes, and then Switch to a high...

Embodiment 2

[0031] The preparation method of the lubricant used for automobile disc brake pads and brake cylinder guide pins is as follows:

[0032] S1. Add 51.6 parts of polymethylsiloxane, 2 parts of polyethylsiloxane, and 3 parts of hydroxysiloxane according to the raw material ratio of the lubricant, and add it to the container at the same time, and heat up to 1150°C while stirring After that, stop heating and keep the temperature constant for 10 minutes;

[0033] S2. Add 6 parts of hydrophobic fumed silica and 0.8 parts of polyurethane to the container of S1, and expand for 30 minutes;

[0034] S3, 20 parts of zinc oxide, 4 parts of light calcium carbonate are added in S2 step, after stirring evenly, grind 2 times, obtain mixture A;

[0035] S4. Pour mixture A into a high-speed dispersing kettle, add 8 parts of alumina, 3 parts of titanium nitride, 0.8 parts of Tween 80, 0.8 parts of Span 40, control the speed at 1500r / min, disperse at high speed for 40 minutes, and then Switch to ...

Embodiment 3

[0037] The preparation method of the lubricant used for automobile disc brake pads and brake cylinder guide pins is as follows:

[0038] S1. Add 42 parts of polymethylsiloxane, 5 parts of polyethylsiloxane, and 5 parts of hydroxysiloxane according to the raw material ratio of the lubricant, and add them to the container at the same time, and heat up to 100- After 120°C, stop heating and keep the temperature constant for 10 minutes;

[0039] S2. Add 5 parts of hydrophobic fumed silica and 1 part of polyurethane to the container of S1, and expand for 30 minutes;

[0040] S3, 20 parts of zinc oxide, 5 parts of light calcium carbonate are added in S2 step, after stirring evenly, grind 2 times, obtain mixture A;

[0041] S4. Pour mixture A into a high-speed dispersing kettle, add 10 parts of alumina, 5 parts of titanium nitride, 2 parts of Tween 80, 1 part of Span, control the speed at 1500r / min, disperse at high speed for 40 minutes, and then Switch to a high-pressure shearing k...

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Abstract

The invention discloses a lubricating agent used for a disc-type brake pad of an automobile and a guide pin of a brake cylinder of the automobile. The lubricating agent is prepared from, by weight, 47.5 parts of polymethyl siloxane, 3 parts of polyethyl siloxane, 4 parts of hydroxyl siloxane, 5 parts of hydrophobic fumed silicon dioxide, 25 parts of zinc oxide, 3 parts of light calcium carbonate,5 parts of aluminium oxide, 5 parts of titanium nitride, 1 part of tween 80, 0.5 part of span 40 and 1 part of polyurethane. The lubricating agent has excellent high temperature and wear resistance performance and excellent sticking resistance performance, has the quite low low-temperature starting torque, is resistant to corrosion, cannot be subjected to oil layering and desaturation after beingplaced for a long time, is good in leakproofness and has a good heat conduction effect under the harsh high-temperature condition, and the preparation technology is controllable. The lubricating agentgets the third party certification of the SGS company, passes the testing standard of the 1907 / 2006 REACH regulation-197 substances of very high concern of the European Union, passes ten testingstandards of the RoHS directive-RoHS2.0 of the European Union, and is environmentally friendly.

Description

technical field [0001] The invention relates to lubricants used for automobile disc brake pads and guide pins of brake cylinders, in particular to the technical field of lubricant preparation. Background technique [0002] The automobile braking system is mainly composed of functional devices, control devices, transmission transpositions and brakes. The common brakes mainly include drum brakes and disc brakes. Among them, drum brakes are widely used in heavy vehicles, and disc brakes have been widely used in cars. [0003] Disc brake is also known as disc brake, and what the present invention mainly studies is a lubricant for disc brake pads and brake cylinder guide pins. At present, ordinary lithium-based grease is applied to these parts during assembly and maintenance of automobile brake pads. Due to the poor temperature resistance and wear resistance of ordinary lithium-based grease, there will be the following problems: the use temperature is low, Generally, it will no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/08
CPCC10M169/044C10M2201/061C10M2201/062C10M2201/105C10M2207/289C10M2209/103C10M2209/108C10M2209/109C10M2217/045C10M2229/0415C10M2229/0455C10N2030/06C10N2030/08C10N2030/56C10N2030/72C10N2020/093C10N2010/04
Inventor 杨杏萍李四海
Owner 大锦(广州)科技有限公司
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