摘要
采用二步乳液聚合技术合成了具有核一壳结构的硬质聚氯乙烯（Ｒ－ＰＶＣ）改性剂ＣＳ－ＡＣＲ－Ⅳ，借助透射电镜和动态粘弹谱仪考察了其形态结构，利用Ｂｒａｂｅｎｄｅｒ塑化仪和毛细管流变仪研究了ＣＳ－ＡＣＲ－Ⅳ的用量及合成参数对Ｒ－ＰＶＣ加工性能的影响。试验结果表明，ＣＳ－ＡＣＲ－Ⅳ可明显促进Ｒ－ＰＶＣ塑化，并降低熔体表现粘度。
CS-ACR-Ⅳ, a modifier with core-shell structure for Rigid Polyvinyl Chloride (R-PVC) was synthesized with two-stage emulsion polymerization technique.The latex particle morphology of CS-ACR-Ⅳ was observed by means of Trans-mission Electron Microscope (TEM)and Dynamic Viscoelastometer and the effects of admixing amount of CS-ACR-Ⅳ and its synthetic parameters such as core-shell ratio, amount of crosslinking agent and molecular weight of PMMA on the processability of R-PVC were studied with Brabender Plasti-corder and Capillary Rheometer.Tests results show that CS-ACR-Ⅳ can remarkably promote plasticization of R-PVC and decrease its apparent melt viscosity.
出处
《化学建材》
1994年第1期2-7,共6页
Chemical Materials for Construction
关键词
核壳聚合物
硬质聚氯化烯
性能
core-shell polymer R-PVC processability modifier multi-stage emulsion polymerization blend
