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A lubricant for automobile disc brake pads and guide pins of brake cylinders

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: 2021-12-07
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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  • A lubricant for automobile disc brake pads and guide pins of brake cylinders
  • A lubricant for automobile disc brake pads and guide pins of brake cylinders
  • A lubricant for automobile disc brake pads and guide pins of brake cylinders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for a lubricant 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. Add 30 parts of zinc oxide and 5 parts of light calcium carbonate into step S2, stir evenly, and grind twice to 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-pressure sheari...

Embodiment 2

[0031] A preparation method for a lubricant 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 them into 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;

[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. Add 20 parts of zinc oxide and 4 parts of light calcium carbonate into step S2, stir evenly, and grind twice to obtain mixture A;

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

Embodiment 3

[0037] A preparation method for a lubricant 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. Add 20 parts of zinc oxide and 5 parts of light calcium carbonate into step S2, stir evenly, and grind twice to 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 kettle for cycli...

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Abstract

The invention relates to a lubricant for automobile disc brake pads and guide pins of brake cylinders, which is prepared from the following raw materials in parts by weight: 47.5 parts of polymethylsiloxane, 3 parts of polyethylsiloxane, 4 parts of hydroxysiloxane, 5 parts of hydrophobic fumed silica, 25 parts of zinc oxide, 3 parts of light calcium carbonate, 5 parts of aluminum oxide, 5 parts of titanium nitride, 1 part of Tween 80, 0.5 parts of Span 40, 1 part polyurethane. This lubricant has excellent high-temperature wear-resistant and anti-seize properties, extremely small low-temperature starting torque, corrosion resistance, no oil separation, no dilution, good sealing performance, good heat conduction effect under high temperature and harsh conditions, and controllable preparation process . The lubricant has obtained third-party certification from SGS, has passed EU REACH Regulation No. 1907 / 2006-197 test standards for substances of very high concern, and passed EU RoHS Directive-RoHS2.0 10 test standards. It is an environmentally friendly lubricant.

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. 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 brakes are also known as disc brakes. The main research of the present invention 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 not ex...

Claims

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Application Information

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Patent Type & Authority Patents(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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