Copper-free nano ceramic brake pad

Abstract

The invention provides a copper-free nano ceramic brake pad. The brake pad comprises the following components in percentage by weight: 10% of phenolic resin, 17% of mineral fiber, 6% of ferric oxide,10% of graphite, 16% of barium sulfate, 4% of aramid fiber, 20% of potassium titanate, 5% of rubber powder and 12% of nano silicon dioxide coated hexagonal boron nitride. The brake pad has the advantages of being stable in friction coefficient, small in product abrasion, comfortable in braking in the using process and free of noise, and the service life reaches more than 70000 kilometers.

Description

technical field [0001] The invention relates to the field of automobile industry, in particular to a copper-free nano-ceramic brake pad. Background technique [0002] The most popular brake pads as the key parts of automobiles are ceramic organic formula brake pads. This kind of material has the characteristics of stable friction, no pollution, low density, good comfort, and long service life. However, this type of formula design contains 5- 15% copper. In 2015, the United States found that heavy metals contained in copper seriously polluted water quality, and took the lead in proposing to gradually restrict or even ban the use of copper in brake pad friction materials, requiring that the copper content be less than 5% after 2021 and less than 0.5% after 2025. As one of the key raw materials in the ceramic organic formula, copper has important functions such as heat conduction, stable friction coefficient, formation of transfer film, and wear reduction. No material can dire...

AI Technical Summary

Problems solved by technology

As one of the key raw materials in the ceramic organic formula, copper has important functions such as heat conduction, stable friction coefficient, formation of transfer film, and wear reduction. No material can directly replace copper in the original formula without changing its performance.

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