Friction and wear behaviors of polyamide-based composites blended with polyphenylene sulfide

Polymer blending has attracted wide concern for modification of polymer materials especially in the tribological field. In this article, the structure, mechanical and tribological properties were investigated carefully for the polyamide-6-based composites blended with polyphenylene sulfide (PA6-PPS). It was found that the composites were partially miscible, and the modulus of PA6 was improved apparently with the addition of PPS. The average friction coefficient of PA6-PPS composites decreased as the content of PPS increased at the stable stage. The friction coefficients and wear rate of the PA6-PPS composites increased under higher load, while the friction coefficient decreased and the wear rate increased at higher sliding speed. Besides, scanning electron micrograph of worn surface morphology revealed the primary wear mechanism of PA6-PPS composites gradually transformed from the micro-cutting wear to adhesive wear and abrasive wear.