表面活性剂对PVC增塑糊稳定性能的影响及机理探讨  

Influence of Surfactant on Stability of PVC Plastisol and Exploration of Related Mechanism

作　　者：徐国敏[1] 吉玉碧[1] 张敏敏[1] 胡智[1] 谭红[1] 

机构地区：[1]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《塑料》2010年第3期54-56,共3页Plastics

基　　金：国家科技支撑计划项目(2007BAE10B03);贵州省校合作项目[黔科合计省合(2008)7005号]

摘　　要：研究表面活性剂种类、用量对PVC增塑糊黏度稳定性的影响,并探讨增塑糊的稳定机理。结果表明:吐温类表面活性剂改性PVC糊初始黏度最大,350η硅油次之,聚氧乙烯类表面活性剂改性的增塑糊初始黏度最小,其中350η硅油改性的增塑糊黏度稳定性最好。随表面活性剂用量的增多,增塑糊的初始黏度越小,但增塑糊的稳定性与表面活性剂用量并不存在简单的线性关系。对有表面活性剂存在的PVC增塑糊,主要遵循空间位阻稳定机制和空位絮凝机制。The influence of surfactant on stability of PVC plastisol was studied and the related mechanism was discussed. The results indicated that the plastisol modified with tween surfactant showed the highest viscosity,350η silicon oil took the second place, the plastisol modified with polyethylenes suffactant showed the lowest viscosity,the plastisol modified with 350η silicon oil showed the best stability. The plastisol showed lower viscosity as the content of surfactant employed more,but the stability of plastisol and the dosage of surfactant didn ＇ t show a linear relationship. The plastisol modified with surfaetant complied with space volume stability mechanism and vacancy flocculation mechanism.

关 键 词：表面活性剂 聚氯乙烯 增塑糊 黏度 稳定性 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]