Core Performance Requirements for Brake Linings
Stable Friction Coefficient
It is a core indicator of braking effect, usually required to be between 0.3-0.5 (excessively high values may easily cause brake locking, while excessively low values result in insufficient braking force). Additionally, it should have small fluctuations under changes in temperature (-40℃ to 800℃) and humidity.
High-Temperature Resistance
A large amount of heat is generated by friction during braking (the temperature can reach over 600℃ during emergency braking). The material must not soften or decompose at high temperatures to avoid brake failure caused by "heat fade".
Wear Resistance
It is necessary to balance self-wear and wear on the brake disc: excessive self-wear will shorten the service life (the service life of ordinary linings is about 30,000-80,000 kilometers), while excessive wear on the brake disc will increase maintenance costs.
Safety
Free of toxic and harmful substances (such as asbestos and heavy metals), with low dust emissions during braking (complying with environmental protection standards, such as the EU REACH regulations), and no release of toxic gases at high temperatures.
Comfort
Low noise (avoiding high-frequency squealing) and small vibration during braking to improve driving experience.
