【摘要】 分别采用苯乙烯-丁二烯-苯乙烯共聚物（SBS）和乙烯-乙酸乙烯共聚物（EVA）作增韧剂,利用熔融挤出法制备纳米CaCO₃高填充丙烯腈-丁二烯-苯乙烯三元共聚物（ABS）/CaCO₃复合材料,研究了纳米CaCO₃填充量和增韧剂种类对ABS/CaCO₃复合材料力学性能和熔体流动速率的影响。结果表明:SBS对ABS/CaCO₃复合材料的增韧效果优于EVA;当ABS用量为100.0 phr、纳米CaCO₃填充量为25.0 phr、SBS用量为5.0 phr时,可得到力学性能符合GB/T 10009—1988要求的ABS/CaCO₃复合材料;当SBS和EVA用量较低时,SBS更能明显提高ABS/CaCO₃复合材料的熔体流动速率。更多还原

【Abstract】 Acrylonitrile-butadiene-styrene（ABS）/calcium carbonate（CaCO₃）composite filled with high content of nano-CaCO₃ is prepared by melt extrusion method with styrene-butadiene-styrene（SBS）and ethylene-vinyl acetate（EVA）as toughened modifier. The effect of CaCO₃ and toughened modifier content on mechanical properties and melt flow rate（MFR）of ABS/CaCO₃ composite are studied respectively. The results indicate that the toughening effect of SBS on ABS/CaCO₃ composite is better than that of EVA. When the amount of ABS is 100 phr, nano-CaCO₃ 25.0 phr, and SBS 5.0 phr, the mechanical properties of ABS/CaCO₃ composites will meet the requirements of GB/T 10009—1988. When the amount of SBS and EVA is low, the dosage of SBS can improve the MFR of ABS/CaCO₃ composite.更多还原