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采用熔融共混法制备马来酸酐(MA)封端的聚碳酸亚丙酯/碳酸钙(PPC-MA/CaCO3)复合材料,讨论纳米碳酸钙(nano-CaCO3)和重质碳酸钙(heavy-CaCO3)这2种填料对PPC/CaCO3复合材料的增强作用和热稳定性的影响。结果表明:nano-CaCO3能够显著提高复合材料的拉伸强度和弯曲强度,而heavy-CaCO3对PPC/CaCO3复合材料有较强的增韧作用。用MA封端剂提高了PPC/CaCO3复合材料的力学性能。SEM显示MA能改善CaCO3填料与PPC基体的界面相容性。热重分析结果说明添加2种CaCO3都使复合材料的热分解温度有不同程度的降低,heavy-CaCO3复合材料的热稳定性比nano-CaCO3复合材料好。
Maleic anhydride (MA) terminated poly (propylene carbonate) / calcium carbonate (PPC-MA / CaCO3) composites were prepared by melt blending. The effects of nano-CaCO3 and heavy calcium carbonate ) These two kinds of filler on the PPC / CaCO3 composites enhance the role and thermal stability. The results show that nano-CaCO3 can significantly improve the tensile strength and flexural strength of the composites, while heavy-CaCO3 has a stronger toughening effect on the PPC / CaCO3 composites. The mechanical properties of PPC / CaCO3 composites were improved by using MA capping agents. SEM shows that MA can improve the interfacial compatibility between CaCO3 filler and PPC matrix. Thermogravimetric analysis shows that the addition of two kinds of CaCO3 all reduced the thermal decomposition temperature of the composites to a certain extent, and the thermal stability of the heavy-CaCO3 composite was better than that of the nano-CaCO3 composite.