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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: 2006-06-14
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 butadiene rubber, reduced iron powder, barium sulfate, sulfur powder, zinc oxide, bauxite, asbestos, anti-aging agent, accelerator, etc. However, there are still some deficiencies, the biggest problem 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 formulas of high friction coefficient rubber crystal synthetic composite brake shoe material:

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

Embodiment 2

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

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

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

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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 braking device for ensuring the safe operation of railway rolling stock, and belongs to the technical field of vehicle braking. 2. Background technology [0002] At present, cast iron brake shoes are commonly used in railway locomotives and vehicles in my country. Although this cast iron brake shoe is simple to manufacture and low in cost, it has a low friction coefficient and a low braking power that can be undertaken. Braking sparks are common. Therefore, Can not meet the needs of my country's railway speed increase and heavy load high speed. To solve this problem, my country has developed synthetic brake shoes for railway locomotives. The main components of this synthetic brake shoe are composed of butadiene rubber, reduced iron powder, barium sulfate, sulfur powder, zinc oxide, bauxite, asbestos, antioxidants, accelerators, etc. Although this synthetic brake shoe overcomes the cast iron brake The shortcomi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08K3/00F16D69/02A61K8/63A61K9/00A61K9/70A61K31/565A61K31/57A61K31/58A61P5/00A61P15/00A61P15/02A61P17/00A61P25/00A61Q19/00C07J1/00C07J17/00C07J43/00
CPCC07J43/006A61K31/565A61K31/566A61K31/5685A61K31/57A61K31/58C07J1/0011C07J43/003
Inventor 吴有站吴伟槐陈涛
Owner 吴有站
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