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Hight-performance semi-metal brake sheet material without asbestos

A high-performance, asbestos-free technology, applied in the field of brake pad materials, can solve the problems of low performance grade, low temperature resistance, and performance that need to be improved

Inactive Publication Date: 2006-08-16
JIANGYIN POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are asbestos-free semi-metallic brake materials, but their current performance level is not high, mainly because the temperature resistance is not high, only between 250-350 °C, and the thermally stable friction coefficient is only 0.25-0.35, and the performance needs to be improved.

Method used

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  • Hight-performance semi-metal brake sheet material without asbestos
  • Hight-performance semi-metal brake sheet material without asbestos
  • Hight-performance semi-metal brake sheet material without asbestos

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: The ingredients of this example are: 20 parts (parts by mass, the same below) of Lavaux phase strengthened iron-based alloy powder, and 8 parts of pure copper powder or bronze powder are compounded, and the powder size is 200 mesh; 17 parts The nano-butadiene cyanide rubber powder is compounded with 15 parts of modified phenolic resin, 0.75 parts of bisthiuram tetrasulfide, 0.75 parts of tetramethylthiuram trisulfide accelerator, particle size 200 mesh; 15 parts of short glass fiber, The length is not more than 7mm, 7% carbon fiber, the length is not more than 8mm; 7 parts of nano aluminum oxide and other fillers: 3 parts of flake graphite, 5 parts of sulfuric acid, 0.5 parts of sulfur and 1 part of boron nitride. Carry out the front wheel disc brake products of Xiali automobile according to the following process:

[0021]

[0022] The material performance test results conform to the US SAEJ661 standard. The friction coefficient at 350℃ is 0.438 (heating) ~ 0...

Embodiment 2

[0024] The ingredients of this embodiment are: 30 parts (parts by mass, the same below) of the Levy phase strengthened iron-based alloy powder, and compounded with 5 parts of pure copper powder or bronze powder, powder particle size 200 mesh; 8 parts of nano-butyronitrile Rubber powder, combined with 15 parts modified phenolic resin, 0.75 parts bisthiuram tetrasulfide, 0.75% tetramethylthiuram trisulfide accelerator, particle size 200 mesh; 10% short glass fiber and 5 parts steel fiber , Length not greater than 7mm, 3 parts carbon fiber and 4 parts natural sisal fiber, length not greater than 8mm; 7 parts nano aluminum oxide and other fillers: 4 parts flake graphite, 5.2 parts sulfuric acid pickaxe, 0.3 parts sulfur and 2 parts Parts of boron nitride. Carry out the front wheel disc brake products of Santana car according to the following process:

[0025]

[0026] The material performance test result conforms to the American SAEJ661 standard, the friction coefficient at 350℃ i...

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Abstract

A high-performance semi-metal brake sheet material without asbestos consists of 5-30% ledeburite-phase fortified iron-base alloy powder, 5-20% pure copper powder or bronze powder, 5-25% nanometer budicyan rubber powder, 5-25% modified phenolic resin, 0.5-2% dithiuram sulfide, 0.5-2% tetramethyl trisulfide thiuram improver, 5-20% glass fiber or / and 5-20% steel fiber or / and 1-10% natural bast fiber, 1-10% carbon fiber composite additive, 1-10% nanometer aluminum oxide and other bulking filler, 1-10% flake-shaped graphite, 1-12% zirconium sulfate, 0.3-3% sulfide and 0.5-3% boron nitride. It can endure 350-400 DEG C temperature, its friction coefficient is between 0.35-0.45 and has excellent thermal attenuation performance and long life.

Description

Technical field: [0001] The invention relates to a brake pad material, in particular to a new high-performance non-asbestos semi-metal brake pad material, which can be used for medium and high-end automobiles, heavy trucks, high-horsepower tractors, and also used for oil drilling rigs and clutches, and can be made into Disc or drum brake pads. Background technique: [0002] For a long time, brake pads with asbestos as the main friction material have been used as brake materials for motor vehicles. Asbestos products and their reaction products are carcinogenic to humans. Therefore, non-asbestos brake materials are the development direction and inevitable trend. At present, there are non-asbestos semi-metal brake materials, but their current performance grades are not high, mainly due to the low temperature resistance, which is only between 250 and 350 ℃, and the thermally stable friction coefficient is only 0.25 to 0.35, and the performance needs to be improved. Summary of the in...

Claims

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Application Information

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IPC IPC(8): C09K3/14C08L9/02C08L61/14C08K5/40F16D69/02
Inventor 董元源周宏雷赵勇彪张峰
Owner JIANGYIN POLYTECHNIC COLLEGE
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