In order to study the effects of different braking speeds on the friction and wear properties of carbon fiber reinforced resin-based friction materials, phenolic resin-based friction materials reinforced with three kinds of carbon fiber preforms were prepared, and three kinds of carbon fiber preforms were chopped fiber (DQ), plain cloth (TB) and 2.5D deep cross-linking fabric (SJ). The friction coefficient, wear rate and braking time of the three friction materials at different braking speeds were tested. The friction and wear mechanisms of the friction materials were discussed in combination with microscopic surface morphology and wear debris morphology. The results show that the friction coefficient of the material is basically SJ>TB>DQ, and the deep crosslinked fabric reinforced friction material has the lowest wear and the shortest braking time at the same braking speed. The friction coefficient of plain weave and 2.5D fabric reinforced friction material were less affected by the change of braking speed and were stable at 0.35~0.45. With the increase of braking speed, the chopped fiber reinforced friction material mainly wears abrasive grains, and the friction surface is difficult to form a continuous friction film. There is a relatively complete friction film on the friction surface of plain weave and 2.5D fabric reinforced friction material, and the main wear form is adhesive wear.
Fiber Reinforced Plastics/Composites
carbon fiber reinforced phenolic resin based friction materials
friction and wear properties