聚氯乙烯与固相法氯化聚乙烯以及线型 低密度聚乙烯共混物的动态力学性能

采用动态力学分析法（ＤＭＡ）研究了聚氯乙烯（ＰＶＣ）与团相法氯化聚乙烯（ＣＰＥ）的相容性以及ＰＶＣ／ＣＰＥ／ＬＬＤＰＥ（线型低密度聚乙烯）共混体系的动态力学性能．实验结果表明，由低温－高温两步氯化制得的ＣＰＥ与ＰＶＣ组成的共混体系为一部分相容体系，两相之间存在一定的相互作用即链段相容性；由低温一步氯化法制得的ＣＰＥ具有氯化区和未氯化区类似嵌段式结构，对ＰＶＣ／ＬＬＤＰＥ共混体系具有增容作用．

Dynamic Mechanical Properties of PVC BIeds withsolid State Chlorinated Polyethylene and LLDPE

Compatibility of PVC blends with solid state chiorinatal polyethylene(CPE)has ho studied by usingdynamic mechanical analysis(DMA). It is found that the CPE produced by two ~ step chlorination at low and high temprathe connins much more segments scalar to PVC than of or Prepe by one - step chiodriion at low telnperatme So.PVC/CPE(Produced by two - step solid chlorination at low and high tempelature)blend is a Partially compatible system.There is a ceylon intemetion, ie, segmented compatibity,between them.The CPE Prodwed by one - step chlorination at lowtemperature has similar to block structure of chlorinated and unchlorinated regions,and is an more effective cowibilierfor the PVC/LLDPE blend system than CPE Prepared by two - step chlorination at low and high temperatme.