电石法PVC有机锡热稳定体系研究  

Research on the thermal stabilizing system based on organotin compounds for calcium carbide process PVC

作　　者：鲁圣军[1,2,3] 徐明[1,2] 王丽娥[1,2] 宫耀华[1,2] 罗筑[1,2,3] 于杰[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]贵州省复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州省材料结构与强度重点实验室,贵州贵阳550014

出　　处：《聚氯乙烯》2010年第2期32-35,共4页Polyvinyl Chloride

基　　金：国家科技支撑计划题(2007BAE10B03);贵州省"十一五"科技重大专项([2006]6033)

摘　　要：从流变行为、热稳定时间、热分解温度及力学性能等方面考察了有机锡稳定剂及有机锡/钙锌复合稳定剂在电石法PVC中的应用。结果表明:适量钙锌稳定剂与有机锡稳定剂复配使用,可以在保持电石法PVC加工稳定性的同时,降低热稳定剂的成本;使用有机锡/钙锌复合稳定剂,PVC的弹性模量、拉伸强度明显低于比使用单一有机锡稳定剂时的PVC,但冲击强度和断裂伸长率明显提高。An applied research on the thermal stabilizing system of calcium carbide process PVC based on organotin and calcium zinc stabilizers was performed in the present work by evaluating the rheological behaviors, thermal stabilization time, thermal decomposition temperature and mechanical properties. The results showed that： （1） utilizing organotin/calcium zinc composite stabilizer at proper composition, the cost of stabilizer could be decreased with no change in the processing stability of calcium carbide process PVC; （2） the elastic modulus and tensile strength of PVC blended with organotin/calcium zinc composite stabilizer were obviously lower than those of PVC blended with single organotin stablizer, while the impact strength and elongation at break of PVC samples were enhanced significantly.

关 键 词：聚氯乙烯 有机锡稳定剂 钙锌稳定剂 流变试验 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]