▎ 摘　　要

NOVELTY - Method for preparing manganese dioxide modified fiber fabric composite material comprises mixing phenolic resin, sheet-layer nano-manganese dioxide, lubricating filler and organic solvent, and dispersing to obtain an impregnating liquid, soaking fabric in the dipping liquid, solidifying and forming the obtained soaked fabric, where the fabric is a woven fabric woven from a glass fiber and aramid fiber glass fiber. USE - The composite material is useful for ultrasonic motors. ADVANTAGE - The composite material improves the wear resistance of the material while reducing the friction coefficient; ensures friction coefficient of the obtained composite material is 0.254-0.326, wear rate is 0.0018 to the power of 180.0043 g/hour which provides guidance for the design of the friction material of the ultrasonic motor. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manganese dioxide modified fiber fabric composite material prepared as mentioned above.