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Abstract: This research aims to determine the effect of altering filler particle sizes and shapes, on the thermal and mechanical properties of polypropylene (PP). Fillers such as thermally reduced graphite oxide (TRGO), multi-layer graphene (MLG250), carbon black (CB), multiwalled nanotubes (MWNT) and expanded graphite (EG), were added to the PP base. The Hot Disk TPS 1500 model was used to measure the thermal conductivity of the various PP composites. Results determined that the PP bases containing CB, MLG250 and TRGO, had drastically altered fire behaviour, with their temperature of decomposition pushed 30°C higher than it was previously. The thermal conductivity of all the PP composites were enhanced with the addition of fillers, with exception to the addition of CB. The filler to enhance the thermal conductivity of PP the most was MLG250, by a factor of 1.4.  

Reference: Polymer Degradation and Stability, 98, (2013) pp. 1495-1505

DOI: 10.1016/j.polymdegradstab.2013.04.009