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Wearing resistant material, composite brake pad for braking and method for preparing same

A technology of wear-resistant materials and brake pads, which is applied in the field of synthetic brake pads for braking, which can solve problems such as block dropping, slag dropping, and hot spots of brake discs, and achieve good braking effect, long service life, and no abnormal wear Effect

Active Publication Date: 2010-08-18
CHINA ACADEMY OF RAILWAY SCI CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after the existing wear-resistant materials used for high friction coefficient synthetic brake pads are made into brake pads, there are problems such as slag and block falling, causing thermal damage and abnormal wear such as hot spots and cracks on the brake disc.

Method used

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  • Wearing resistant material, composite brake pad for braking and method for preparing same
  • Wearing resistant material, composite brake pad for braking and method for preparing same
  • Wearing resistant material, composite brake pad for braking and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Nitrile rubber-2615.04%, 2123 novolac resin 10.08%, graphite 9.02%, primary reduced iron powder 13.03%, precipitated barium sulfate 23.60%, potassium feldspar powder 8.06%, crushed DF1-5.5 steel fiber 6.01%, needle-shaped Wollastonite 12.09%, sulfur 1.20%, hexamethylenetetramine 1.30%, polymethylene polyaniline 0.12%, zinc oxide 0.30% and stearic acid 0.15% by weight, weighing 30 kg of raw materials . Then put the nitrile rubber into the rubber mixing machine, adjust the roller distance, and repeat the triangular bag until the nitrile rubber is made into a smooth, uniform and bubble-free film, and the mastication is completed. Add the rubber that has been masticated into the double roller of the rubber mixing machine. After covering the rollers, add sulfur, hexamethylenetetramine, polymethylene polyaniline, zinc oxide and phenolic resin to the rubber, and repeatedly beat the triangle Pack until the color of the rubber material is basically uniform, then add the powder ...

Embodiment 2

[0041] Nitrile rubber-2614.45%, 2123 novolac resin 9.87%, graphite 8.57%, primary reduced iron powder 12.68%, precipitated barium sulfate 24.76%, potassium feldspar powder 8.46%, crushed DF-5.5 steel fiber 5.71%, needle-shaped Wollastonite 12.42%, sulfur 1.26%, hexamethylenetetramine 1.25%, polymethylene polyaniline 0.11%, zinc oxide 0.31% and stearic acid 0.15% by weight, weighing 30 kg of raw materials . Then put the nitrile rubber into the rubber mixing machine, adjust the roller distance, and repeat the triangular bag until the nitrile rubber is made into a smooth, uniform and bubble-free film, and the mastication is completed. Add the rubber that has been masticated into the double roller of the rubber mixing machine. After covering the rollers, add sulfur, hexamethylenetetramine, polymethylene polyaniline, zinc oxide and phenolic resin to the rubber, and repeatedly beat the triangle Pack until the color of the rubber material is basically uniform, then add the powder of...

Embodiment 3

[0047] Example 3 Comparison of the performance of traditional HVB-1 synthetic brake pads and the brake pads of this application

[0048] Get respectively the brake pad of the present invention prepared by embodiment 1 and 2, and the HVB-1 type composite brake pad used by the speed-up passenger car at present, and test its physical Mechanical properties and 1:1 brake friction performance, the results are shown in Table 5 below:

[0049] Table 5: Comparison of physical and mechanical properties of synthetic brake pads

[0050]

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Abstract

The invention provides a wearing material, a composite brake pad for braking and a method for preparing the same, wherein the wearing material comprises the following components: acrylonitrile butadiene rubber, phenolic resin, graphite, iron powder, precipitated barium sulfate, potassium feldspar powder, steel fiber, needle-like wollastonite and other auxiliary materials; the composite brake pad made of the wearing materials can meet the service requirements of a speed increased passenger car, and the use of the loaded speed increased passenger car in the whole road shows that the braking effect is good, no thermal damage and abnormal abrasion is caused on a braking disk, slag and blocks do not fall off from the car, and the service life is long.

Description

technical field [0001] The invention relates to the field of synthetic brake pads for braking. Specifically, the present invention relates to a wear-resistant material, a composite brake pad made of the material and a method for preparing the brake pad. Background technique [0002] At present, the brake materials widely used in the railway transportation sector mainly include four categories: high phosphorus cast iron brake shoes, new high friction coefficient synthetic brake shoes, high friction coefficient synthetic brake shoes and powder metallurgy brake shoes. Among them, the new high friction coefficient synthetic brake shoe is applied to railway freight cars; powder metallurgy brake pads are used in EMUs; high friction coefficient synthetic brake pads are used in speed-raising passenger cars; high-phosphorus cast iron brake shoes are used in ordinary non-speed-raising passenger cars. [0003] However, after the existing wear-resistant materials used for high friction...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L61/06C08K13/04C08K3/04C08K3/08C08K3/30C08K7/06C08K7/10C08K3/34C08K3/06C08K5/17C08K3/22C08K5/09F16D69/02
Inventor 裴顶峰党佳贺春江
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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