Tribological Property of Polyimide Porous Materials

The friction performance of the polyimide (PI) porous composite materials made by moulding method with MoS₂ or polytetrafluoroethylene (PTFE) appended are disserted. The result shows that all the PI-based porous composites have the performance of transfer lubrication in the friction process, and the transfer film is built between the counter friction bodies; with the increasing of the MoS₂ amount from 0 to 20%, the friction coefficient trends toward decrease, and the transfer lubricate phenomenon become more obvious; when adding PTFE as synergist to the porous PI+MoS₂ composite material, the synergistic effect happens, which can improve the friction performance of the material effectively.