| Abstract:In the experiment, air oxidation at high temperature was used to modify the surface of carbon fiber, and phosphoric acid oxidation was used to modify the surface of aramid chopped fiber, the fibers were characterized before and after modification. The aramid pulp, bamboo fiber, sepiolite flocking, modified/unmodified carbon fiber and aramid chopped fiber were mixed to produce paper-based friction material, and the effect of surface modification of the reinforced fibers on the properties of paper-based friction material was studied. The results showed that more ravines appeared on the surface of modified fibers and the roughness of fiber surface increased. There were more contact points and area on the surface of the fiber which resulted in higher bonding. The bonding strength between the layers of sheets which were made by the modified fiber increased by 21% compared to that of fiber without modification. |
