摘要
用Ｉｎｓｔｒｏｎ３２１１毛细管流变仪研究了聚醋酸乙烯酯（ＰＶＡＣ）与聚丙烯（ＰＰ）共混体系的熔体流变性能。结果表明，体系表现出切力变稀的性质．且共混粘度小于两种纯组分的粘度。改变共混组成，体系的粘度显示出负偏差的性质。在共混体系中加入第三组分乙烯－醋酸乙烯共聚物（ＥＶＡ），体系粘度变化不大，但增加了ＰＶＡＣ与ＰＰ的相容性。
The melt rheologic properties of PVAC/PP blends have been studied by using British Instron 3211 Capillary Rheometer. It is found that viscosity of PVAC/PP blends is less than those of two pure polymers when composition is changed, the blends show Negative-Deviation property. Adding EVA to PVAC/PP blends the compatibility enhances between PVAC and PP.
