20.500.12556/RUL-139399 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. The composites of expanded graphite (EG) and glass fibre-reinforced polyamide 6 (PA6/GF) were prepared, and the effect of EG particle size (~5 μm (EG5) and ~1000 μm (EG1000)) on these properties was investigated. Composites with different contents (2-10 wt%) of EG in PA6/GF were prepared using a laboratory twin-screw extruder and then injection moulded in the form of rods and discs required for thermal, thermomechanical, and tribological tests. EG acted as a nucleating agent but hindered the crystallization rate at higher concentrations, which was more pronounced when EG5 was added. Dynamic mechanical analysis showed that the storage modulus increased with the addition of both types of EG. However, the addition of EG5 increased the storage modulus more than EG1000. The lowest coefficient of friction was obtained by the addition of 10 wt% EG5. The wear increased with the addition of both types of EG, only slightly with the addition of EG1000. The thermal conductivity of the composites with EG increased from 0.42 W/mK to 1 W/mK. The results show that the use of EG with smaller particle size is much more beneficial than with a larger one. graphite polimerys friction wear grafit polimeri trenje obraba true false true Angleški jezik Slovenski jezik Članek v reviji 2022-09-02 08:09:18 2022-09-02 08:09:22 2025-11-12 14:40:18 0000-00-00 00:00:00 2022 0 0 8 str. Vol. 2022, art. 9974889 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.92:678.7 0730-6679 10.1155/2022/9974889 97314051 Japic-Effect_of_Expanded_Graphite_on_Mechanical_and_Tribological_Properties_of_Polyamide_6....pdf Japic-Effect_of_Expanded_Graphite_on_Mechanical_and_Tribological_Properties_of_Polyamide_6....pdf 1 996F4950BCF01DD34A800AF7D33EE132 eaf74c552093f9660d63774d97d4a24c394ce1d6c109663daac63bb8473aa16c 62eef891-2a86-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159960 https://www.hindawi.com/journals/apt/2022/9974889/ 1 bfc36de3-2a85-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159959 Fakulteta za strojništvo 0 0 0