Study of the Mechanical Properties and Crystallization Behavior of Polypropylene Composite Filled with Nano-CaCO₃ Particulate

Polypropylene composite filled with two kinds of nano-CaCO₃ particulate were prepared by melt-mixing modification, and the mechanical properties and crystallization behavior of them were studied. It is shown that both of nano-CaCO₃ can all speed the generation of β-PP, increase the crystallization temperature and the crystallization rate of PP, improve the impact ductility of the polypropylene composite.