What are the characteristics of common brake pad friction materials, do you really understand them? (superior)
Mineral fiber for brake pad friction material
The mineral fibers used in friction materials generally refer to non-asbestos composite reinforcing fibers. The main raw materials are selected basalt, diabase, limestone, dolomite, etc., and a certain proportion of compounds are added. Liquefied, blown by flowing air, and made of fibers made by surface treatment and other processes. The main advantages of this type of fiber are wear resistance and heat resistance. The friction material has good heat decay and has a low thermal conductivity coefficient, which can reduce the braking heat transferred to the brake fluid, avoid overheating of the brake fluid, and brake failure. The coefficient of friction is very stable, and the products produced by proper technology can also reduce braking noise.
Antimony sulfide powder for brake pad friction material
Antimony sulfide powder is a black powder, the main component is antimony (Sb), and the basic content is greater than 60%. The melting point of antimony sulfide is relatively low. The antimony oxide generated after pyrolysis and the metal antimony generated in the presence of reducing agent can prevent oxidation and combustion at high temperature, keep the performance of friction materials stable, and also reduce the friction of organic binders at high temperatures. Decomposition speed, improve the service life of the material. During the braking process, the hardness of the high-temperature reaction is relatively low, which can reduce the noise and vibration generated by the friction material during braking.
