酯基锡复配原理及其在PVC中应用研究进展  

Compound Principles of Ester-tin and Its Application Development in PVC

作　　者：张书华[1] 甘文君[1] 李强[1] 方波[1] 龚欣雨[1] 

机构地区：[1]上海工程技术大学化学化工学院,上海201620

出　　处：《中国塑料》2011年第2期85-91,共7页China Plastics

基　　金：上海市教育委员会科研创新项目(09YZ369)

摘　　要：从酯基锡热稳定剂的结构和性能出发,阐述了酯基锡对聚氯乙烯(PVC)的热稳定机理和复配原理,分析了我国在酯基锡产业化方面存在的问题。通过分析可以看出,酯基锡主要通过与PVC中不稳定Cl发生交换反应,与HCl反应生成硫醇,减弱HCl对PVC降解的催化作用,以及硫醇破坏PVC中的共轭结构来抑制PVC降解;酯基锡与硫醇类化合物、双酚A等抗氧剂、β-二酮和水滑石均有较好的协同效应,与这些化合物复配能有效地提高其热稳定性;酯基锡产品品质问题、生产过程安全性差、缺乏关于酯基锡热稳定机理和毒性机理的系统研究及环境评价体系,是酯基锡产业化进程中急需解决的问题。The thermal stabilization mechanism and compound principles of ester-tin in PVC were discussed based on its structure. The mechanisms for ester-tin could inhibit the degradation of EVC, including： （1） substituting unstable chloride; （2） reacting with HCl forming thiol, which may be added onto the conjugate structure of PVC. The ester-tin showed excellent synergistic effect with thiols, some antioxidants such as bisphenol A, 13 diketone con, pounds, and HI.Ds, and its thermal stability was increased by composing with these compounds. The product＇s quality, unsafty of its production, and shortage of its thermal and toxic mechanism research, and shortage of its environmental assessment were the urgent problems to be solved in the domestic industry of este〉tin.

关 键 词：聚氯乙烯 酯基锡 热稳定剂 复配原理 应用 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]