Abstract
AbstractThe Polytetrafluoroethylene (PTFE)/Kevlar fabric/phenolic composites have been widely used as self‐lubricating materials owing to their excellent properties. In this study, the tribological properties of PTFE/Kevlar fabric composites under different temperatures (25–150°C) were studied showing the lowest wear rate and friction coefficient at 75°C. The effect of temperature on wear behavior of fabric/phenolic composites was revealed through the analysis of friction surfaces, wear debris, and transfer films. To be specific, the improvement of tribological properties occur in a temperature range of 25–75°C being predominantly caused by the abrasive wear, whereas in the range of 75–150°C, the tribological properties decreased because of the adhesive wear. According to this phenomenon, the friction and wear test of the fabric composite after pre‐grinding at 75°C shows a great improvement of coefficient of friction (COF) and wear rate about 30%. The study of the wear behavior at different temperatures is important for the application and properties improvement of self‐lubricated composites.
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