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High friction coefficient rubber composite brake shoes

A high friction coefficient, rubber crystal technology, applied in the direction of friction linings, drug combinations, steroids, etc., can solve the problems of wheel tread abrasion, air pollution, poor thermal conductivity, etc., achieve stable friction performance, and solve air pollution , long service life effect

Inactive Publication Date: 2003-09-03
吴有站 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main components of this synthetic brake shoe are composed of cis-glue, reduced iron powder, barium sulfate, sulfur powder, zinc oxide, bauxite, asbestos, anti-aging agent, accelerator, etc. However, there are still some deficiencies, the biggest of which is the asbestos content in synthetic brake shoes
Asbestos is not only a carcinogen, but also produces asbestos dust during operation and braking, causing air pollution; in addition, the synthetic brake shoes of locomotives containing asbestos components also have the problem of poor thermal conductivity, which will cause brake shoes to wear out during braking. "Locking" causes the wheel tread to be scratched and peeled off, which affects its service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] One of the high friction coefficient rubber crystal synthetic composite brake shoe material formulas:

[0015] Shun gum: 18%, reduced iron powder: 7%, barium sulfate: 3%, sulfur powder: 2%, zinc oxide: 6%, bauxite: 5%, graphite: 15%, mineral whiskers: 10%, Metal wool: 8%, tackifier: 13%, anti-aging agent: 1%, accelerator: 3%, cashew nut shell liquid: 5%, organic friction modifier: 4%.

Embodiment 2

[0017] High friction coefficient rubber crystal synthetic composite brake shoe material formula 2:

[0018] Shun gum: 20%, reduced iron powder: 8%, barium sulfate: 3%, sulfur powder: 2%, zinc oxide: 5%, bauxite: 5%, graphite: 13%, mineral whiskers: 10%, Metal wool: 8%, tackifier: 13%, anti-aging agent: 1%, accelerator: 3%, cashew nut shell liquid: 5%, organic friction modifier: 4%.

[0019] The high-friction coefficient rubber crystal composite brake shoe made by the formula of the present invention is tested by the Product Quality Supervision and Inspection Center of the Ministry of Railways, and all performance indicators are better than the standards issued by the Ministry of Railways, especially its wear index. protrude. After several tests: the maximum wear of high friction coefficient rubber synthetic composite brake shoes is 1.77g / mJ, and the minimum is 0.66g / mJ, which is far more than the current standard (TB / T2403-1993) formulated by the Ministry of Railways. The we...

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PUM

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Abstract

A composite rubber crystal brake shoe with high friction coefficient for locomotive and train is disclosed. Its advantages are high friction coefficient, high antiwear performance, and long service life.

Description

1. Technical field [0001] The invention relates to a brake device for ensuring the safe operation of railway locomotives, belonging to the technical field of vehicle brakes. 2. Background technology [0002] At present, my country's railway locomotives generally use cast iron brake shoes. Although this cast iron brake shoe is simple to manufacture and low in cost, it has a low friction coefficient, low braking power, and brake sparks are common. Therefore, it cannot Adapt to the needs of my country's railway speed-up and heavy-duty high-speed. In order to solve this problem, my country has developed a composite brake shoe for railway locomotives. The main components of this synthetic brake shoe are composed of cis-glue, reduced iron powder, barium sulfate, sulfur powder, zinc oxide, bauxite, asbestos, anti-aging agent, accelerator, etc. However, there are still some shortcomings, the biggest problem of which is the composition of asbestos in the syntheti...

Claims

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Application Information

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IPC IPC(8): A61K8/63A61K9/00A61K9/70A61K31/565A61K31/57A61K31/58A61P5/00A61P15/00A61P15/02A61P17/00A61P25/00A61Q19/00C07J1/00C07J17/00C07J43/00
CPCC07J1/0011A61K31/566C07J43/006A61K31/565A61K31/57A61K31/58C07J43/003A61K31/5685
Inventor 吴有站吴伟槐陈涛
Owner 吴有站
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