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研究了苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)单独添加和与纳米CaCO3复配添加对聚丙烯/苯乙烯-丙烯腈共聚物(PP/SAN)共混体系相容性的影响。结果表明:SBS用量为6 phr时,体系的分散性尺寸降低,分布均匀性改善,有一定的增容效果,但当其用量为10 phr时,体系的相容性变差;SBS和纳米CaCO3先在双辊塑炼机上混炼后再复配添加,当纳米CaCO3/SBS质量比为2/1、总添加量为10 phr时,增容效果好于单独添加SBS的体系;改变纳米CaCO3/SBS的配比体,系的拉伸强度和缺口冲击强度变化不大。
The compatibility of styrene-butadiene-styrene block copolymer (SBS) and polypropylene / styrene-acrylonitrile copolymer (PP / SAN) influences. The results showed that when the dosage of SBS was 6 phr, the dispersion size of the system decreased, the distribution uniformity improved, and some compatibilizing effect was obtained. However, the compatibility of the system decreased when the dosage of SBS was 10 phr. SBS and nano-CaCO3 When the mass ratio of nano-CaCO3 to SBS is 2/1 and the total amount of addition is 10 phr, the compatibilization effect is better than that of adding SBS alone; after changing the nano-CaCO3 / SBS ratio body, Department of the tensile strength and notched impact strength changes.