Preparation and combustion properties of flame retarded polypropylene-polyamide-6 alloys

In this work, polypropylene (PP) and polyamide-6 (PA6) alloys were prepared by blending PP and PA6 or nano-PA6 while using a compatibiliser such as maleic anhydride-g-polypropylene (MAPP). Their physical structures were characterized by Hitachi X650 scanning electron microscope (SEM) and transmission electron microscopy (TEM). An intumescent flame retardant (IFR) was added to the PP/PA6 alloys and their flammability behaviour was evaluated using cone calorimeter and real time Fourier transform infrared (FTIR). The probable mechanisms are discussed.