Experimental study on tribological properties of CF/PTFE hybrid fabric reinforced composite under different PTFE proportions

A preparation was made by a new CF/PTFE mixed fabric reinforced composite. The friction and wear properties of the composites with different PTFE proportion hybrid fibers were studied. Experimental results showed that with the increase of PTFE proportion, the friction coefficient of the composite decreased, the temperature rise decreased, and the wear rate increased simultaneously. By SEM and EDX analysis of composites with different PTFE proportions, 20 percent hybrid fabric composite wear was mainly concentrated on the resin matrix and the counter part. The reason was discussed that the surface of the counterpart was formed a "transfer film" containing a large amount of "F" element, which effectively reduced the friction coefficient. (paper)