Asbestos-free brake pads
I believe that many friends who hear the name asbestos for the first time may think that it is a kind of cotton. But in fact, it is a silicate mineral with a fibrous crystalline structure. Its fibers are so small that they cannot be seen by the naked eye, and are easily inhaled into the lower respiratory tract, causing pneumoconiosis, lung cancer, thoracic and peritoneal mesothelioma, and other malignant tumors. , is listed as a first-class carcinogen by the World Health Organization, and many countries have banned the use of asbestos.
Asbestos brake pads are banned internationally because when asbestos brake pads are rubbed, nano-scale heavy metal particles will be released. Inhalation of human lungs can cause cancers such as lung cancer. At the same time, asbestos is also considered an important source of air pollution. In the proportion of asbestos-type brake pads, asbestos accounts for 40%-60%. The microparticles produced by the wear of asbestos brake pads are listed as the six major culprits of PM2.5 together with pollution sources such as vehicle exhaust, smoke exhaust from unqualified restaurants, and industrial coal combustion.
Whether it is a manufacturer of asbestos brake pads, a buyer of asbestos brake pads, or an after-sales maintenance technician, due to frequent contact and use, countless asbestos fibers will be inhaled, which will endanger their health.
In addition, because asbestos is adiabatic, its thermal conductivity is particularly poor. Usually, repeated use of the brakes will cause heat to accumulate in the brake pads. After the brake pads become hot, their braking performance will change. To produce the same The friction and braking force will require more braking times. This phenomenon is called "brake shrinkage". If the brake pads reach a certain temperature, it will cause the brakes to fail.
