Synergistic effect of the inclusion of glass fibers and halloysite nanotubes on the static and dynamic mechanical, thermal and flame retardant properties of polypropylene

摘要: Hybrid composites based on polypropylene (PP), glass fiber (GF) and halloysite nanotubes (HNT) were prepared in the presence of a compatibilizer, grafted with maleic anhydride (PP-g-MAH), twin screw extruder. The properties micro composite (PP/GF), nanocomposite (PP/HNT) hybrid (PP/GF/HNT) studied compared. dispersion fillers base matrix effectiveness compatibilizer ascertained by scanning electron microscopy (SEM) transmission (TEM) fourier transform infrared spectroscopy (FTIR). tensile strength modulus PP-g-MAH found to be superior those compatibilized nanocomposites. Differential calorimetry gave insight effect modifying crystallization behavior polymer. combination GF HNT increased temperature PP phase all composites. dynamic mechanical analysis proved that introduced polymer restricted relaxation chains as evidenced rise transition (Tg). thermal stabilities far neat formed an insulating layer delaying degradation tendency elevated activation energy. flammability could modified tremendously incorporation they reduced burning rate raised limiting oxygen index values.