ZHANG Zishou, ZHANG Yangfan, ZHANG Junping, et al. Crystallization Behavior and Melting Characteristic of Micro-and Nano-CaCO3 Filled β-Polypropylene Composites[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2013,52(6):81-85.
ZHANG Zishou, ZHANG Yangfan, ZHANG Junping, et al. Crystallization Behavior and Melting Characteristic of Micro-and Nano-CaCO3 Filled β-Polypropylene Composites[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2013,52(6):81-85.DOI:
In order to obtain high performance PP composites using high toughness β-PP
the β-PP composites were prepared by PP filled nano-CaCO
3
(CC) supported β-nucleating agent (β-CC)
CC and micro-CaCO
3
(MC).The result of differential scanning calorimetry indicated that the crystallization peak temperatures of PP increased by adding MC
the crystallization peak temperatures of β-CC filled PP composites were higher than those of composites filled by MC and CC
and the heterogeneous nucleation of β-CC was higher than those of MC and CC for iPP crystallization. The results on wide-angle X-ray diffraction analysis demonstrated that the MC and CC filled iPP composites mainly formed α-crystal
and the β-CC filled composites mainly formed βcrystal. The β-iPP composites with high filler could be prepared by adding β-CC into iPP matrix.