Evaluation of selected properties of PA6-copper/graphite composite

摘要

Purpose: The aim of this study was to investigate the possibility of improving the tribological properties andthermal conductivity of composites with structural modification of polyamides by the additions of copper andgraphite.Design/methodology/approach: The study involved testing polyamide composites containing metallic powder.As the matrix was used polyamide 6 Tarnamid 27 Natural produced by Azoty Tarnow, which strengthenedcopper, graphite or molybdenum disulfide with varying participation in the composite. Taken tensile test, Brinellhardness, thermal conductivity and the tribological wear resistance. Analyzed the influence of the type of dopantand the participation of the studied property.Findings: The study showed the desirability of the use of graphite and copper as fillers polyamide. The resultingcomposites are characterized by satisfactory mechanical properties and thermal conductivity. Applied fillers alsoshowed a positive effect on the value of the coefficient of friction wear him down much.Research limitations/implications: No synergistic effect of fillers on the properties of a ternary mixturepolyamide-graphite-copper property in all test. Tribological wear for this material was significantly higher thanfor the binary mixtures of polyamide-graphite and polyamide-copper. According to the literature, compositereinforced with graphite and copper should have a best tribological properties, far in excess of other subjects.Low wear resistance of this material disqualify applications on the nodes friction.Practical implications: The results obtained newly developed composites, combined with the relatively lowprice of graphite and copper as compared with the price of mojybdenum sulfide II may be reasons to use themas analogues of commercial mixtures of PA with MoS_2.Originality/value: The results are original and valuable cognitive nature. They bring a new and expandedinformation about the effects of fillers on mechanical and physical properties. Unique data on tribological wearresistance depends on the type and amount of filler.