LI Mei, ZHANG Zishou, TAN Yunhong, et al. Toughening of Polypropylene Random Copolymer by β-Modification[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2015,54(5):62-66.
LI Mei, ZHANG Zishou, TAN Yunhong, et al. Toughening of Polypropylene Random Copolymer by β-Modification[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2015,54(5):62-66.DOI:
In order to improve the impact strength of polypropylene random copolymer (PPR)
the calcium pimelate nucleated PPR
nano-CaCO
3
and calcium pimelatesupported CaCO
3
filled PPR were prepared.Their mechanical properties
crystallization behavior and the content of β-modification were studied using mechanical testing
differential scanning calorimetry
wide-angle X-ray diffraction and scanning electron microscopy. The effect of calcium pimelate
nanoCaCO
3
and calcium pimelate-supported CaCO
3
on the impact strength
elongation at break
crystallization temperature and β-modification contents of PPR were investigated. The result indicated that using supported β-nucleating agent was an efficient method to increase the β-modification contents and improve the toughness of PPR.
关键词
β-成核无规共聚聚丙烯力学性能结晶与熔融
Keywords
β-modification polypropylene random copolymermechanical propertiescrystallization and melting