Brake pad friction material

A friction material and brake pad technology, applied in friction linings, gear transmission mechanisms, other chemical processes, etc., can solve the problems of low actual utilization rate of phosphogypsum, low economic and social benefits, etc., and achieve the effect of purifying the environment and reducing pollution

Inactive Publication Date: 2017-10-03
HUBEI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are already some relatively mature technologies, due to cost and other issues, the economic and social benefits are not high, and the actual utilization rate of phosphogypsum is still very low

Method used

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  • Brake pad friction material
  • Brake pad friction material
  • Brake pad friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 13% resin, 4% friction powder, 5% tire powder, 10% mineral fiber, 12% silica fume wool, 6% glass fiber, 8% graphite, 10% barium sulfate, 6.4% coke powder, 3% alumina, oxide Zinc 3%, iron ore powder 3%, bauxite 4%, vermiculite 2%, zinc stearate 0.6%, phosphogypsum 10%. Total 100%

[0017] The above materials were made into brake pads according to the conventional pressing method, and tested according to the GB5763-2008 standard on a constant-speed friction testing machine according to category 3. The results are shown in Table 1.

[0018] Table 1:

[0019]

[0020] It can be seen from the data in Table 1 that the brake pad obtained in Example 1 of the present invention has a friction coefficient of 0.25-0.42 in the heating stage and a friction coefficient of 0.33-0.47 in the cooling stage, and the wear rate is small, which fully meets the national standard.

Embodiment 2

[0022] 13% resin, 4% friction powder, 5% tire powder, 10% mineral fiber, 12% silica fume cotton, 6% glass fiber, 8% graphite, 6.4% coke powder, 3% aluminum oxide, 3% zinc oxide, iron Mineral powder 3%, bauxite 4%, vermiculite 2%, zinc stearate 0.6%, phosphogypsum 20%. Total 100%

[0023] The above materials were made into brake pads according to the conventional pressing method, and were tested according to category 3 on a constant-speed friction testing machine according to the GB5763-2008 standard. The results are shown in Table 2.

[0024] Table 2:

[0025]

[0026] It can be seen from the data in Table 2 that the brake pad obtained in Example 2 of the present invention has a friction coefficient of 0.33-0.42 in the heating stage and a friction coefficient of 0.38-0.41 in the cooling stage, and the wear rate is small, which fully meets the national standard.

Embodiment 3

[0028] 13% resin, 4% friction powder, 5% tire powder, 10% mineral fiber, 12% silica fume wool, 6% glass fiber, 8% graphite, 5% barium sulfate, 6.4% coke powder, 3% alumina, oxide Zinc 3%, iron ore powder 3%, bauxite 4%, vermiculite 2%, zinc stearate 0.6%, phosphogypsum 15%. Total 100%

[0029] The above materials were made into brake pads according to the conventional pressing method, and were tested according to category 3 on a constant-speed friction testing machine according to the GB5763-2008 standard. The results are shown in Table 3.

[0030] table 3:

[0031]

[0032] It can be seen from the data in Table 3 that the brake pad obtained in Example 3 of the present invention has a friction coefficient of 0.32-0.41 in the heating stage and a friction coefficient of 0.37-0.42 in the cooling stage, and the wear rate is small, which fully meets the national standard.

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Abstract

The invention discloses a brake pad friction material. The brake pad friction material is prepared from, by weight, 7%-20% of resin, 2%-5% of friction powder, 1%-5% of tire powder, 5%-15% of mineral fibers, 5%-15% of wollastonite, 5%-10% of glass fibers, 5%-10% of graphite, 0-15% of barium sulfate, 2%-10% of coke powder, 1%-5% of aluminum oxide, 1%-5% of zinc oxide, 1%-5% of iron ore powder, 1%-5% of bauxite, 1%-5% of vermiculite, 0.3%-1% of zinc stearate and 5%-20% of phosphogypsum according to a conventional brake pad pressing method. According to the friction material, the phosphogypsum serves as padding, the phosphogypsum and other raw materials are prepared into a brake pad according to the conventional brake pad pressing method, third class testing is carried out on a constant speed testing machine according to the GB5763-2008 standard, the friction coefficient is stable, the wear rate is low, and the national standard is completely met.

Description

technical field [0001] The invention belongs to the field of phosphogypsum treatment and resource utilization, and mainly relates to a new application of phosphogypsum, in particular to a friction material for brake pads. Background technique [0002] In recent years, the production and sales volume of China's automobile industry has continued to grow, and China has become a major country in automobile production and sales. The most important safety system on a car is the braking system, and the brake pad is a component that plays a direct role in the entire braking system, which directly affects the reliability of the entire braking system. Brake pads and brake discs (drums) rub against each other to generate braking torque, so as to achieve the purpose of deceleration and braking. Brake pads mainly include a steel back and friction material pasted on the steel back. The performance of the brake pad mainly depends on the formula and processing technology of the friction ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/02F16D2200/0034
Inventor 侯秋飞胡若飞
Owner HUBEI UNIV OF ARTS & SCI
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