Evaluation of the Performance of H 3 BO 3 -filled Polyamide Composite

Abstract

In this study, the performance of boric acid (H₃BO₃)-filled polyamide composites were studied and evaluated at dry-sliding friction conditions. Wear tests were carried out using configuration of composite pin on a rotating AISI D2 steel disc. Test conditions were atmospheric conditions, 10, 30, 50 N applied load values, and 0.4, 0.80, 1.20 m/s sliding speeds. The results show a large drop in the coefficient of friction of PA6 with the addition of H₃BO₃ filler and a significant change in specific wear rate. Furthermore, the coefficient of friction decreases while the specific wear increases with the increase in sliding speed and applied load values, respectively. Moreover, for the range of load and sliding speed values in this study, the coefficient of friction also registered lower values with the increase in H₃BO₃ content percentage. The influence of boric acid on the coefficient of friction and wear is more pronounced at severe working conditions. Finally, the coefficient of friction of H₃BO₃-filled composite is a round 0.1 value and its specific wear rate is in the order of 10^—4 m³/N m.

Keywords

friction polyamide boric acid tribology.

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