PBT/PC共混体系流变性能与形态结构研究
Studies on Rheological Behavior and Microstructure of PBT/PC Blends
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摘要: 采用毛细管流交仪测定了PBT/PC共混物的表观粘度、剪切应力,观察了不同共混物组成和不同温度下共混物的流变行为,并借助扫描电镜对共混物和微观形态结构进行分析。结果表明:PBT/PC熔体共混物的流变行为接近假塑性流体.温度对共混物的流变行为影响很大,共混物的熔体粘度在PBT/PC为90/10和60/40时呈双极值.共混物为两相结构,PC含量为4-50%时呈两互锁结构。Abstract: An experimental investigation of the rheological properties and microstructure on PBT/ PC blends is studied. The viscosities of blends melts appear two extreme values at PC content of 10 and 40 percent, respectively. With the aid of scanning electron micr