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A technology of brake pads and friction materials, applied in the field of brake pads, can solve problems such as non-wear resistance, harsh noise, hidden dangers, etc., and achieve the effects of good thermal conductivity, good heat dissipation performance, and improved wear resistance
Active Publication Date: 2015-08-26
NINGBO JIA XUAN NEW MATERIALS
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Problems solved by technology
At present, asbestos brake pads are mostly used as brake pad friction materials for vehicles, but asbestos in asbestos brake pads has carcinogenic effects and has a serious impact on people's physical and mental health.
When the speed of the brake pad reaches 300 kilometers per hour or above, the temperature of the brake pad can easily reach more than 1000 degrees after braking. Therefore, the brake material is required to be resistant to high temperature and not deformed; At a temperature of 1000 degrees, it is easy to release toxic gas, has a strong smell, and is easy to deform; there are harsh noises and a large number of sparks, which pose a certain safety hazard
In addition, asbestos in asbestos brake pads is difficult to fully bond with other components in the brake pads, and it is easy to peel off, and it is not wear-resistant and has a short service life.
Method used
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Embodiment 1
[0022] The preparation method of the brake pad is obtained according to the conventional preparation method. The process is: raw material mixing - raw material kneading - kneading - pressing - vulcanization, curing - grinding - finished product, the specific process is as follows:
[0023] (1) Mixing of raw materials: According to the formula ratio, graphite (chemically treated graphite), bauxite, feldspar powder, fluorite powder, and silicon carbide are mixed evenly;
[0024] (2) Kneading of raw materials: adding the remaining raw materials of the formula ratio to the mixture of step (1) and kneading;
[0025] (5) Mixing: Mix the above-mentioned kneaded raw materials at a temperature of 250-350°C for 10-50 minutes;
[0026] (6) The kneaded mixture obtained in step (3) is hot-pressed in a mould, and the control pressure is 50-100MPa (500-1000kg / cm 2 ), the hot pressing time is 4 to 6 minutes;
[0027] (4) Vulcanize the press-molded article in step (4) at a temperature of 150...
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Abstract
The invention discloses a brake pad which comprises a steel backing and friction materials. The friction materials are prepared from components including, by weight, 1-10 parts of butyl butylbenzene, 0.5-2 parts of cumyl hydroperoxide, 0.5-2 parts of epoxy resin, 1-15 parts of boron containing phenolic resin, 1-15 parts of polypropylene, 6-10 parts of nylon powder, 5-10 parts of boron nitride, 0.01-0.05 part of coupling agent, 1-5 parts of dicumyl peroxide, 1-2 parts of sulfur powder, 1-2 parts of benzoic acid, 1-2 parts of stearic acid, 1-2 parts of boric acid, 30-50 parts of graphite, 1-2 parts of reduced iron powder, 1-2 parts of barium sulfate, 0.5-2 parts of bauxite, 0.5-2 parts of feldspar powder, 0.5-2 parts of zinc oxide, 0.01-0.05 part of accelerator, 0.01-0.05 part of anti-aging agent, 0.5-2 parts of fluorite powder, 0.5-2 parts of silicon carbide and 0.5-2 parts of coumarone. The brake pad has the advantages of abrasion resistance, long service life, no spark, no smell, low noise and fine heat dissipation performance.
Description
technical field [0001] The invention relates to the technical field of brake pads, in particular to a brake pad with low cost and long service life. Background technique [0002] Brake pads consist of a steel back and friction material bonded to the steel back. At present, asbestos brake pads are mostly used as brake pad friction materials for vehicles, but asbestos in asbestos brake pads has carcinogenic effect and has a serious impact on people's physical and mental health. When the speed of the brake pad reaches 300 kilometers per hour or above, the temperature of the brake pad can easily reach more than 1000 degrees after braking. Therefore, the brake material is required to be resistant to high temperature and not deformed; At a temperature of 1000 degrees, it is easy to release toxic gas, has a strong smell, and is easy to deform; there are harsh noises and a large number of sparks, which pose a certain safety hazard. In addition, the asbestos in asbestos brake pads ...
Claims
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Application Information
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