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Bionic-braking friction material and preparation method thereof

A technology of brake friction material and base material, which is applied in the directions of friction linings, chemical instruments and methods, mechanical equipment, etc., can solve the problem that the performance of brake friction materials is difficult to meet the practical application and so on.

Inactive Publication Date: 2014-07-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] With the rapid development of high-speed and heavy-duty vehicles, the performance requirements for brake friction materials are getting higher and higher. It is increasingly difficult to improve the performance of brake friction materials from the material composition and process methods to meet the needs of practical applications. Therefore, it is necessary to Further improve the performance of brake friction materials by comprehensively optimizing material composition, structure and process

Method used

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  • Bionic-braking friction material and preparation method thereof
  • Bionic-braking friction material and preparation method thereof
  • Bionic-braking friction material and preparation method thereof

Examples

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preparation example Construction

[0055] The preparation method of the bionic brake friction material according to the present invention is composed of the steps of preparing carbon fiber bundles, mixing matrix materials, raw material filling, hot pressing and sintering, and the specific preparation method is as follows:

[0056] 1. Prepare carbon fiber bundles, comprising the following steps:

[0057] 1.1 Twist the carbon fiber with a diameter of 6-10 μm clockwise, and the helix angle of the twisted carbon fiber is 7-45°;

[0058] 1.2 5-15 carbon fibers obtained in step 1.1 are intertwined counterclockwise to form a first-level carbon fiber bundle, and the first-level carbon fiber bundle has a helix angle of 10-30°;

[0059] 1.3 Wind 5-15 first-level carbon fiber bundles clockwise to form second-level carbon fiber bundles, and the second-level carbon fiber bundles have a helix angle of 5-15°;

[0060] 1.4 Wind 3-7 second-level carbon fiber bundles counterclockwise to form third-level carbon fiber bundles. Th...

Embodiment 1

[0077] 1. The bionic braking friction material is composed of the base material: 89% and the carbon fiber bundle imitating the bamboo fiber structure: 11% by weight percentage. Among them, the content of each component of the matrix material is Cu: 70%, Sn: 7%, phenolic resin powder: 0%, flake graphite: 10%, Fe: 5%, Ni: 3%, Cr: 3%, Mo : 2% composition, wherein Cu and Sn are added in the form of Cu-Sn pre-alloyed powder, and the above-mentioned Cu-Sn pre-alloyed powder is composed of 90% Cu and 10% Sn calculated by weight percentage, so the present invention The above-mentioned bionic brake friction material matrix material ratio is based on the weight percentage of each component content: Cu-Sn pre-alloyed powder: 77%, phenolic resin powder: 0%, flake graphite: 10%, Fe: 5%, Ni: 3%, Cr: 3%, Mo: 2%.

[0078] 2. The carbon fiber bundle of bamboo fiber structure in the bionic brake friction material is formed by twisting and winding 75 carbon fibers with a diameter of 6 μm in thr...

Embodiment 2

[0086] 1. The bionic brake friction material is the same as that described in Embodiment 1.

[0087] 2. The carbon fiber bundle structure, preparation process and composition of the imitation bamboo fiber structure in the bionic brake friction material are the same as those described in Example 1.

[0088] 3. The pressing mold used to prepare the bionic brake friction material is the same as that described in Example 1.

[0089] 4. The bionic brake friction material is prepared by pressing-sintering method, and the preparation process is as follows:

[0090] (1) Filling raw materials: the raw material filling steps are the same as those described in Example 1;

[0091] (2) Hot pressing: After filling the raw materials, hot pressing is carried out, the specific steps are as follows, the pressure is maintained at 600MPa and 650 degrees Celsius for 30 minutes, and then demoulding is taken out;

[0092] (3) Post-processing: The post-processing steps are the same as those describ...

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Abstract

The invention discloses a bionic-braking friction material and a preparation method thereof and belongs to the technical field of braking friction materials. The braking friction material comprises the following components in percentage by weight: 3%-20% of carbon fiber bundles and 80%-97% of base body materials, wherein the base body materials comprise the following components in percentage by weight: 5%-7% of Cu, 0.5%-21% of Sn, 0-60% of phenolic resin, 3%-15% of flaky graphite, 0-5% of Fe, 0-5% of Ni, 0-5% of Cr and 0-5% of Mo. According to the helical structure of the bamboo fiber, the carbon fiber bundles for strengthening the friction material, the multi-level torsion winding process and the structure curing process are designed for realizing the bamboo fiber imitating arrangement way of the carbon fiber bundles in the braking friction material; and the preparation of the bionic-braking friction material is realized by adopting a powder metallurgical method process. According to the bionic-braking friction material and the preparation method thereof disclosed by the invention, a reliable and wearable braking friction material is provided for traffic tools including a high speed train, a heavy-load train, a heavy-load car and the like.

Description

technical field [0001] The invention belongs to the technical field of brake friction materials, and in particular relates to a bionic brake friction material for manufacturing high-speed trains and heavy-duty high-speed automobile brakes and a preparation method thereof. Background technique [0002] Brake friction parts are key components to ensure the safety of vehicles such as high-speed trains, heavy-duty trains, and heavy-duty vehicles. Therefore, brake friction parts have strict requirements on material properties. First, brake friction materials should have excellent stability Excellent friction and wear performance, can show a stable friction coefficient under various environmental conditions, and achieve the lowest possible wear under permissible conditions; in addition, the brake friction material should be able to withstand the braking process under high speed or heavy load conditions The resulting high temperature and impact damage the worn surface to ensure the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14C08J5/14F16D69/02
Inventor 马云海庄健佟金陈东辉段连峰沈生龙林福东常志勇柴兴旺徐苏雷
Owner JILIN UNIV