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研究苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)、马来酸酐接枝苯乙烯-丁二烯-苯乙烯嵌段共聚物(MAHSBS)、纳米CaCO3单独填加与复配填加对聚碳酸酯与丙烯腈-丁二烯-苯二烯三元共聚物(ABS)共混物(PC-ABS)性能的影响,采用电子扫描电镜观察其微观结构。结果发现,质量比PC∶ABS=1∶1时,共混材料综合性能最好;单独添加4wt%的纳米CaCO3,PC-ABS的拉伸强度明显上升,冲击强度略有上升;单独添加SBS无法起到改良效果;单独添加MAH-SBS,MAH-SBS/PC-ABS的冲击强度上升,但拉伸强度严重下降;MAH-SBS与纳米CaCO3复配时,可以起到协同作用,PC-ABS的冲击强度由80kJ/m2上升至约108kJ/m2,拉伸强度由57.0MPa上升至约61.5MPa。
The effects of styrene-butadiene-styrene block copolymer (SBS), maleic anhydride grafted styrene-butadiene-styrene block copolymer (MAHSBS) and nano- On the polycarbonate and acrylonitrile - butadiene - styrene terpolymer (ABS) blend (PC-ABS) performance, the use of scanning electron microscopy to observe the microstructure. The results showed that when the mass ratio of PC: ABS was 1: 1, the best performance of the blends was obtained. When 4wt% nano-CaCO3 was added alone, the tensile strength of PC-ABS increased obviously and the impact strength increased slightly. The impact strength of MAH-SBS and MAH-SBS / PC-ABS alone increased, but the tensile strength decreased seriously. When MAH-SBS was mixed with nano-CaCO3, synergistic effect could be obtained. PC-ABS The impact strength increased from 80 kJ / m2 to about 108 kJ / m2, and the tensile strength increased from 57.0 MPa to about 61.5 MPa.