Abstract:

In this study, the wear and friction behaviors of unfilled poly-amide polymer and short glass fiber (GF) reinforced polyamide composites with different weight ratios (10%-20%-30%) were investigated. Wear tests were carried out under dry conditions against a 30% short glass fiber reinforced polyamide 6 (PA6+30%GF) composite disc. Glass fiber reinforced PA6 based composites were first produced in granule form in a twin screw extruder and then wear test specimens were molded in an injection molding machine. Wear tests were carried out under 20 N, 30 N and 40 N loads at a sliding speed of 0,5 m/s and sliding distance of 1500 m. The tests were carried out at ambient temperature using a pin-disc wear tester. As a result of the experiments, the friction coefficient and wear rate of the unfilled PA6 polymer increased with the applied load. The coefficient of friction of short GF reinforced PA6 composites also increased, while the wear rate did not increase much. The lowest coefficient of friction and wear rate were obtained in PA6 composite with 30% GF reinforcement. With 30% GF reinforcement of polyamide polymer, the wear resistance of the composite increased by at least 48% compared to the unfilled PA6 polymer.

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