High friction coefficient synthetic materials and preparation method thereof

Abstract

The invention discloses a high friction coefficient composite material and a manufacturing method thereof, wherein the material is prepared through material sealing and grain-making processing by the following compositions in weight percentage: 8 to 13 percent of butadiene-acrylonitrile rubber, 2 to 10 percent of styrene-butadiene rubber, 5 to 10 percent of cresol methyl-stage phenol-formaldehyde resin modified, 15 to 30 percent of steel fiber, 10 to 15 percent of magnesia, 5 to 10 percent of calcined petroleum coke, 2 to 5 percent of silicon carbide, 10 to 25 percent of mineral fiber, 5 to 10 percent of calcium hydroxide, 10 to 20 percent of barium sulfate, 5 to 10 percent of graphite, 1 to 5 percent of supramoly, 1 to 5 percent of carbon black, 1 to 3 percent of sulfur and 1 to 3 percent of accelerant. The material can be applied in a plurality of situations to prepare friction components, has stable friction performance and good abrasion resistance, effectively inhibits the phenomena of metal inlay, cracking, chip off-falling and so on, reduces the damage on vehicle wheels, has good impact resistance and good weathering resistance, can be used in the environment with large temperature variation for a long time, and has the application characteristics of wide application region and large difference of the regional environment.

Description

technical field [0001] The invention relates to the field of preparation of friction materials, in particular to a high friction coefficient synthetic material and a preparation method thereof. Background technique [0002] Friction materials are widely used, such as brake shoes for locomotive brakes, brakes for subway trains, and brakes for high-speed trains. In some special occasions, the corresponding requirements cannot be met. [0003] For example, taking railway wagons as an example, most of the brake shoes for railway wagons in use today are made of materials with resin as the bonding system, which are prepared by hot pressing. Under the condition of 1,000 km, its performance can basically meet the braking requirements, but the inventor has found that the railway wagon is under the condition of heavy load and high speed running, such as the weight of the railway wagon is higher than 80 tons, and the speed is greater than 80 kilometers per hour. , requires a large fr...

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Problems solved by technology

[0002] Friction materials are widely used, such as brake shoes for locomotive brakes, brakes for subway trains, and brakes for high-speed trains. In some special occasions, the corresponding requirements cannot be met

[0003] For example, taking railway wagons as an example, most of the brake shoes for railway wagons in use today are made of materials with resin as the bonding system, which are prepared by hot pressing. Under the condition of 1,000 km, its performance can basically meet the braking requirements, but the inventor has found that the railway wagon is under the condition of heavy load and high speed running, such as the weight of the railway wagon is higher than 80 tons, and the speed is greater than 80 kilometers per hour. , requires a large friction force, and has high requirements on the temperature resistance of the brake shoe. The existing brake shoe made of resin as the bonding system material has insufficient friction performance, friction body is easy to break, fall off, and metal inlaid Serious, it is easy to cause wheel scratches, heat damage, cracks and other phenomena that endanger driving safety, and the service life is short, which cannot meet the braking requirements of existing heavy-duty and high-speed railway trucks during driving

[0004] Therefore, it is necessary to prepare a material with a high friction coefficient to meet the requirements of braking components of high-speed and heavy-duty railway vehicles that cannot be met by existing friction materials.

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