由于石棉摩擦材料在生产和使用过程中产生的粉尘对人体键康带来危害,因而各国都纷纷注意寻找新的纤维材料代替石棉。在过去五年里无石棉的刹车垫开始问世。目前,用石墨代替刹车垫中的石棉已经逐渐增加,所以石墨的需要量由1—2％增加到15％左右。 As the asbestos friction materials in the production and use of dust generated on the human body KK damage, so all countries have to look for new fiber materials instead of asbestos. Asbestos-free brake pads have come out in the past five years. At present, asbestos has been gradually replaced by graphite instead of brake pads, so the amount of graphite increased from 1-2% to about 15%.