Effect of Expanded Graphite on Mechanical and Tribological Properties of Polyamide 6/Glass Fibre Composites

The quality of plastic gears, especially their durability, is becoming increasingly important due to advances in electric mobility. Therefore, new materials are being developed that must have better mechanical properties, high thermal conductivity for heat dissipation, and tribological properties. composites expanded graphite (EG) glass fibre-reinforced polyamide 6 (PA6/GF) were prepared, the effect EG particle size (~5 ?m (EG5) ~1000 (EG1000)) on these properties was investigated. Composites with different contents (2-10 wt%) PA6/GF prepared using a laboratory twin-screw extruder then injection moulded form rods discs required thermal, thermomechanical, tests. acted as nucleating agent but hindered crystallization rate at higher concentrations, which more pronounced when EG5 added. Dynamic analysis showed storage modulus increased addition both types EG. However, than EG1000. lowest coefficient friction obtained by 10 wt% EG5. wear EG, only slightly from 0.42 W/mK 1 W/mK. results show use smaller much beneficial larger one.