Mechanical and thermal behavior dependence on graphite and oxidized graphite content in polyester composites

It is possible to observe a maximum peak at 97 °C and a second peak around 145 °C for the polyester resin. However the presence of graphite fillers seems to inhibit the formation of the second peak. When the fillers are introduced into the thermoset polymer, the glass transition temperature curve changes its shape and it is considerably shifted. However, graphite oxide tends to agglomerate, which causes a reduction in the molecular movement of the polyester chains.265