Experimental investigation on tribological behaviours of PA6, PA6-reinforced Al$_2$O$_3$ and PA6-reinforced graphite polymer composites

Bulletin of Materials Science

关键词: Al$_2$O$_3$;    graphite;    friction;    reinforcement;    PA6;    wear.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

This article reports on the preparation, characterization and experimental investigation of polyamide 6 (PA6) reinforced with alumina oxide (Al$_2$O$_3$) and graphite composites. The test specimens were prepared in an injection-moulding machine by varying the weight proportions of Al$_2$O$_3$ and graphite particles blended with PA6. The tribological properties of the composites were observed by using pin-on-disc wear test rig under dry slidingconditions. The worn surfaces of the composites were examined using scanning electron microscope. The addition of Al$_2$O$_3$ and graphite significantly enhanced the tribological properties of PA6. The PA6 containing 30 wt% Al$_2$O$_3$ and 20 wt% graphite revealed the best tribological behaviours due to the stronger interfacial bonding characteristics with improved wear resistance. Further, the thermal stability of Al$_2$O$_3$ and graphite particles was studiedthrough thermogravimetric analysis test. It was also found that further addition of Al$_2$O$_3$ and graphite in PA6 had no significant improvement in wear resistance, the co-efficient of friction and heat generation.

【 授权许可】

CC BY