Abstract:
The crystallization behavior, isothermal crystallization kinetics and non isothermal crystallization kinetics of glass fiber reinforced polypropylene were studied by DSC. Mandelkern method and Jeziorny method were used to analyze the non isothermal crystallization. The results show that the presence of glass fibers affects the temperature and the rate of crystallization of the polypropylene, the glass fibers have an ability to nucleate crystallization, and short glass fiber has more effect than glass fiber mat to PP matrix. Avrami equation is valid for analyzing the isothermal crystallization of glass fiber reinforced polypropylene. The crystallization parameter G C from Jeziorny method does not change with the cooling rate, and Jeziorny method fits this non isothermal crystallization well. So the kinetics of non isothermal crystallization of gf PP can be calculated by this method.