功能性复合材料中用作摩擦材料的,可以分为以下二类:(1)减摩材料:通常用作轴承。对于这类材料要求有极低的摩擦系数;(2)摩阻材料:通常用作汽车、拖拉机、船舶等交通工具的各种机械装置及飞行器中的制动、传动、控制速度及转向等装置。对于这类材料,要求有相当高的磨擦系数(通常为0.30～0.60),而且要求在一定温度、速度、压力变化范围中性能稳定。 Functional composite materials used as a friction material, can be divided into the following two categories: (1) Anti-friction material: usually used for bearings. For these materials require a very low coefficient of friction; (2) friction material: usually used for vehicles, tractors, ships and other means of transport of various mechanical devices and aircraft braking, transmission, control speed and steering devices . For such materials, a relatively high coefficient of friction (usually 0.30 to 0.60) is required and is required to be stable over a range of temperatures, velocities and pressures.