Brake pad friction material is mainly composed of four […]
Brake pad friction material is mainly composed of four parts, namely, the basic material, filler material, lubricant and organic materials, and in which fiber is added to enhance its strength, play a role in strengthening. The proportions of these materials in different products vary depending on the application and the coefficient of friction. In addition, different grades of cars and disc brakes and brake pad used friction material is not the same. For brake linings, the most important is the formulation of the friction material, which is often tight-lipped by the manufacturer of the brake linings, especially on new formulations. Certain ingredients such as mica, silica, rubber fragments It is public. The final effect of brake pad braking, abrasion resistance, temperature resistance and other properties will depend on the relative proportions of the different components.
Friction material from the basic material can be divided into asbestos, NAO type (ie non-asbestos organic type), semi-metallic and special fiber 4 species. Here we specifically look at these different types of brake pads.
Of course, the standard should first be determined, because the only way to test any new friction material formulations. These specifications should include friction performance, fatigue resistance, temperature adaptability, abrasion resistance and noise. The better the friction material, the better the tribological properties of friction blocks under different temperatures and pressures, in other words, the performance should not change much at low temperature or high temperature. The better the friction material, the less likely a brake atrophy will occur after repeated braking, which keeps the "brake pedal feel" in good condition. Better materials also reduce wear and noise and reduce noise.