Abstract
Self-lubricating polyphenylene sulfide (PPS)-based composites were achieved by in-situ construction of ordered polyamide 66 (PA) microfibrillar structure coupling with the addition of polytetrafluoroethylene (PTFE) powders as solid lubricants, using high shear injection moulding technique. The influence of annealing temperature on the in-situ formed PA microstructure and properties such as crystalline structure, mechanical as well as tribological performance of corresponding composites was studied in detail. Results suggested that PPS (56 wt%)/PA (24 wt%)/PTFE (20 wt%) composites exhibited the best tribological properties after annealing at 150 °C for 1h. The lowest friction coefficient and specific wear rate are as low as 0.139 and 4.372 × 10−6 mm3/Nm which are nearly 80% and 1.83 × 103 times lower than pure PPS, respectively. This work provides a facile method to reduce both friction and wear properties of self-lubricating thermoplastic polymers which are critical for weight reduction and energy saving in industrial fields.
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