Tribological properties of PTFE-based fabric composites at cryogenic temperature

Abstract Fabric composites are widely employed in self-lubricating bearing liners as solid lubrication materials. Although the tribological behaviors of fabric have been extensively studied, cryogenic properties and mechanisms scarcely reported largely unclear to instruct material design for aerospace other high-tech applications. Herein, polytetrafluoroethylene (PTFE)-based hybrid-fabric were investigated at ambient temperatures form pin-on-disk friction under heavy loads. The results suggest that coefficients obviously increase with a decrease wear when temperature drops from 25 −150 °C. Moreover, thermoplastic polyetherimide (PEI), an adhesive composites, has better performance than thermosetting phenol formaldehyde (PF) resin, which can be attributed flexible chemical structure PEI. excellent is transfer film formed by PTFE fibers on surface fabrics.