Features of non-asbestos friction materials
Asbestos is a silicate mineral with a fibrous crystalline structure. Its fibers are so small that they cannot be seen by the naked eye. They are easily inhaled into the lower respiratory tract and induce the formation of pneumoconiosis, lung cancer, thoracic and peritoneal mesothelioma, and other malignant tumors. Listed as a primary carcinogen by the World Health Organization, many countries have banned the use of asbestos.
Developed countries in the world's automobile industry have rapidly carried out research and development of asbestos-free friction materials, and successively introduced asbestos-free semi-metal friction materials, sintered metal friction materials, substitute fiber reinforced or polymer bonded friction materials, composite fiber friction materials, Ceramic fiber friction materials, etc., their common features are:
1. There is no asbestos component, but substitute fibers or polymers are used as reinforcement materials;
2. Increased metal components to improve its use humidity and life;
3. A variety of additives or fillers are added to improve friction stability and anti-adhesion, and reduce brake noise and chatter.
