CPE与ACR或MBS复合增韧R-PVC体系的流变性能研究

Study on Rheological Properties of R-PVC Blends Co-toughened by CPE/ACR or MBS

本文主要研究了ＣＰＥ／ＡＣＲ、ＣＰＥ／ＭＢＳ复合增韧ＲＰＶＣ体系的熔体剪切粘度（ηα）与增韧剂组成比（Ｒｃ）的关系。结果表明，两种三元共混物的ηαＲｃ关系明显不同；定Ｒｃ和γ下的ηα，ＣＰＥ／ＡＣＲ体系＜ＣＰＥ／ＭＢＳ体系；该ηα差别随Ｒｃ增加而增大，随γ增加而减小。其流变特性与增韧组份间相互作用和相分散形态有关。

? The relationship between melt shear viscosity of the melt (ηα)and composition ratio of PVC/CPE/ACR or MBS as toughen agents in R-PVC system is studied. The results show that ηa-Rc relation of two kinds of trinary blends is evidently different. Under same Rc and , the ηa of CPE/ACR system is always less than that of CPE/MBS system; the ηa difference increases with Rc and decreases with . Its rheological characteristics are concerned in an interaction of the toughening componants and their phase dispersion morphology.