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分别以乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯(E-MA-GMA)、苯乙烯-丙烯腈-甲基丙烯酸缩水甘油酯(StAN-GMA)以及苯乙烯-(乙烯-丁烯)-苯乙烯嵌段共聚物接枝马来酸酐(SEBS-g-MAH)为相容剂,采用熔融共混的方法制备了改性聚苯硫醚/聚酰胺66(PPS/PA66)共混物。通过毛细管流变分析,研究了PPS及相容剂用量对PPS/PA66共混物流变性能的影响。结果表明:PPS/PA66共混体系为非牛顿假塑性流体,其表观黏度随剪切速率的增大而减小;随着PPS用量的增加,共混体系的非牛顿指数降低,其流变性能逐渐偏离牛顿型流体;随着相容剂用量的增加,PPS/PA66/E-MA-GMA体系的熔体黏度明显增大,PPS/PA66/St-AN-GMA体系的熔体黏度则先下降后上升,而PPS/PA66/SEBS-g-MAH体系的熔体黏度变化不大。
(E-MA-GMA), styrene-acrylonitrile-glycidyl methacrylate (StAN-GMA) and styrene- (ethylene-butylene) Styrene block copolymer grafted maleic anhydride (SEBS-g-MAH) as compatibilizer, a blend of modified polyphenylene sulfide / polyamide 66 (PPS / PA66) was prepared by melt blending method. The rheological properties of PPS / PA66 blends were studied by capillary rheological analysis. The results showed that PPS / PA66 blends were non-Newtonian pseudoplastic fluid, and their apparent viscosity decreased with the increase of shear rate. With the increase of PPS content, the non-Newtonian index of blends decreased. The performance of PPS / PA66 / E-MA-GMA system obviously increases with the increase of compatibilizer dosage. The melt viscosity of PPS / PA66 / St-AN-GMA system Decreased after the rise, while PPS / PA66 / SEBS-g-MAH system melt viscosity changes little.