Coating material for automobile braking system and preparation method thereof

A technology for automotive braking systems and coating materials, applied in coatings and other directions, can solve problems such as not having a high friction coefficient, achieve the effects of increasing the initial pressure-contact area, reducing failure rates, balancing and adjusting parallelism errors

Inactive Publication Date: 2015-12-23
HUBEI FEILONG FRICTION & SEALING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing various adhesives or coating materials do not have the above four characteristics at the same time, especially do not have a high friction coefficient, so it is necessary to develop a special composite material for coating on brake pads or brake pads. Disk (drum) working surface

Method used

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  • Coating material for automobile braking system and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Mix evenly according to the material ratio in the ratio table, coat on the surface of the reference brake pad, and test and compare the surface hardness, initial pressure contact area, and initial friction coefficient.

[0025] Matching table and test data

[0026]

[0027] Raw materials and technical specifications used in the above table: nitrile rubber latex, nitrile rubber solid content 40%-55%; styrene-acrylic latex, styrene-acrylate emulsion solid content 40%-50%; high hardness fine powder 1, three Aluminum oxide fineness 800 mesh; high hardness fine powder 2, zirconia fineness 600 mesh; high hardness fine powder 3, silica fineness 800 mesh; silane coupling agent 1, KH550 type; silane coupling agent 2, KH570 type; guar gum hydroxypropyl trimethyl ammonium chloride HV high viscosity type; polyethylene glycol, HO(CH?CH?O)nH, molecular weight 200~600.

[0028] The comparison test results show that after coating the material of the present invention, the surface h...

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Abstract

The invention relates to a coating material for an automobile braking system and a preparation method thereof. The coating material is prepared from the following components by weight: 5-15 parts of nitrile butadiene rubber latex; 33-45 parts of styrene acrylic latex; 45-55 parts of high hardness fine powder; 1 part of a coupling agent; and 1 part of an assistant. The coating material is used for overcoming the problems of small braking force and unbalanced braking of left and the right wheels brought about by insufficient initial friction surface of a friction couple. The coating material provided by the invention is not only limited to coating on a brake pad work surface, but also can be used for coating the work surface of a brake disk (drum), the appropriate coating thickness is 0.3-0.5mm, and the coating material can dry quickly so as to effectively balance and regulate the parallelism error between brake coupled parts, thereby effectively enhancing the initial press contact area between a brake braking couple, enhancing the initial braking force, reducing the fault rate of braking partial brake, and effectively improving the braking safety of a new car run-in period.

Description

technical field [0001] The invention relates to the technical field of automobile brake system manufacturing, in particular to a coating composite material used for the working surface of brake pads or brake discs (drums). Background technique [0002] In the automobile braking system, the brake pad and the brake disc (drum) are two frictional couples. Due to the error in the processing and assembly accuracy of each component of the brake system assembly, the initial running-in area and the secondary braking force are affected. In order to eliminate this error , It is necessary to coat a material on the initial working surface of the brake pad. The material should have 1. Good elasticity, which can automatically adjust the initial running-in surface. Insufficient and weakened braking force 3. Good adhesion with brake pad materials 4. Natural drying is fast, which is convenient for efficient production operations. However, the existing various adhesives or coating materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D109/04C09D7/12
Inventor 范良辉罗金中马艳兵
Owner HUBEI FEILONG FRICTION & SEALING MATERIALS
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