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Application of rice hull carbon to preparation of brake pad and friction material of brake pad

A technology of friction materials and brake pads, applied in a new application field of rice husk charcoal, can solve problems such as pollution and waste of resources, and achieve the effects of large market supply, stable braking, and stable friction coefficient

Active Publication Date: 2015-05-20
HANGZHOU UNITED FRICTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accumulation of these rice husk charcoal has caused new pollution and waste of resources

Method used

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  • Application of rice hull carbon to preparation of brake pad and friction material of brake pad
  • Application of rice hull carbon to preparation of brake pad and friction material of brake pad
  • Application of rice hull carbon to preparation of brake pad and friction material of brake pad

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mineral fiber 15%, graphite 10%, barium sulfate 22%, steel wool 17%, grinding agent 2%, coke powder 15%, tire powder 2%, resin 7%, nitrile powder 1%, calcium oxide 1%, Friction powder 3%, rice husk charcoal 5%, total 100%.

[0023] The above-mentioned materials were made into brake pads according to the conventional pressing method, and tested according to category 4 on a constant speed testing machine according to the GB5763-2008 standard. The results are shown in Table 1.

[0024] Table 1:

[0025]

[0026] 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 0.36-0.48 in the heating stage, and a friction coefficient of 0.37-0.53 in the cooling stage, and the wear rate is small, which fully meets the national standard. After extensive use in Santana, Sonata and Jetta taxis, the braking is smooth, the braking noise is small, and the life of the friction material has reached more than...

Embodiment 2

[0028] Mineral fiber 15%, graphite 5%, barium sulfate 20%, steel wool 17%, grinding agent 2%, coke powder 10%, tire powder 2%, resin 9%, nitrile powder 1%, calcium oxide 1%, Friction powder 3%, rice husk charcoal 15%, total 100%.

[0029] The above materials were made into brake pads according to the conventional pressing method, and tested according to category 4 on a constant speed testing machine according to the GB5763-2008 standard. The results are shown in Table 2.

[0030] Table 2:

[0031]

[0032] 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 0.36-0.39 in the heating stage, and a friction coefficient of 0.35-0.38 in the cooling stage, and the wear rate is small, which fully meets the national standard. After extensive use in Santana, Sonata and Jetta taxis, the braking is smooth, the braking noise is small, and the life of the friction material has reached more than 35,000 ki...

Embodiment 3

[0034] 10% mineral fiber, 5% graphite, 15% barium sulfate, 15% steel wool, 2% grinding agent, 5% coke powder, 2% tire powder, 11% resin, 1% nitrile powder, 1% calcium oxide, Friction powder 3%, rice husk charcoal 30%, total 100%.

[0035] The above materials were made into brake pads according to the conventional pressing method, and tested according to category 4 on a constant speed testing machine according to the GB5763-2008 standard. The results are shown in Table 3.

[0036] table 3:

[0037]

[0038] 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 0.33-0.40 in the heating stage and a friction coefficient of 0.32-0.38 in the cooling stage, and the wear rate is small, which fully meets the national standard. After extensive use in Santana, Sonata and Jetta taxis, the braking is smooth, the braking noise is small, and the life of the friction material has reached more than 35,000 kil...

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Abstract

The invention discloses application of rice hull carbon to the preparation of a brake pad and also provides a friction material for preparing the brake pad. The friction material is characterized by being prepared from the following materials in part by weight according to a conventional brake pad pressing method: 10 to 15 percent of mineral fibers, 5 to 10 percent of graphite, 15 to 25 percent of barium sulfate, 15 to 20 percent of steel wool, 1 to 3 percent of friction increasing agent, 5 to 15 percent of coke dust, 1 to 4 percent of tire powder, 7 to 11 percent of resin, 1 to 3 percent of butyronitrile powder, 1 to 2 percent of calcium oxide, 2 to 5 percent of friction powder and 5 to 30 percent of rice hull carbon. The brake pad is prepared from the friction material disclosed by the invention and other raw materials by using the rice hull carbon as a friction filler according to the conventional brake pad pressing method. By being tested in four types in a constant speed test according to the GB5763-2008 standard, the brake pad has stable friction coefficient and low wear rate and totally reaches the national standard. By being massively used on taxis of Santana, Sonata and Jetta, the brake pad is stable to brake, has no noise complaint and has service life of over 35,000km.

Description

technical field [0001] The invention relates to a new application of rice husk charcoal, especially the application in preparing brake pads, and a brake pad friction material containing rice husk charcoal. Background technique [0002] The most important safety system on a car is the braking system, and all braking components are safety components. Brake pads are one of the most important links in the entire braking system, which will directly affect the reliability of the entire braking system. [0003] Brake pads and brake discs (drums) rub against each other to form a frictional couple, generate braking torque, and convert the kinetic energy of the car into heat energy. When braking, the temperature of the brake pads and brake discs will rise by 300-400°C. Brakes Brake pads and brake discs (drums) are the most stressed components in a vehicle and are subject to extreme heat, mechanical and chemical stress. .In addition, brake pads are exposed to external environmental i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/04F16D69/02C09K3/14
Inventor 陈忠
Owner HANGZHOU UNITED FRICTION MATERIAL
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