含硫醇锑化合物聚氯乙烯光照变色的机理研究  

The Research on Photochromic Mechanism of PVC(poirviyl chloride)Contained Antimony Thiol

作　　者：张天 徐社阳 桂雪峰 方燕 许正敏 许凯 ZHANG Tian;XU She-yang;GUI Xue-feng;FANG Yan;XU Zheng-min;XU Kai(Guangzhou Chemistry Co.,Ltd.AS,Guangdong Provincial Key Laboratory of Organic Polymer Material For Electronics,Guangzhou 510650,Guangdong,China;Guangdong Komo Co.,Ltd.,Guangzhou 510000,Guangdong,China)

机构地区：[1]中科院广州化学有限公司,广东省电子有机聚合物材料重点实验室,广东广州510650 [2]广东科茂林产化工股份有限公司,广东广州510000

出　　处：《合成材料老化与应用》2020年第3期1-5,共5页Synthetic Materials Aging and Application

基　　金：基金(No.21174162);广东省自然科学基金(No.2016A030313162);广东省科技计划项目(No.2016B090930006)资助支持。

摘　　要：合成了三(巯基乙酸异辛酯)锑化合物并作为热稳定剂与聚氯乙烯混合制备成片状样品,研究其在加工过程中硫醇锑化合物的结构变化而导致此样品在光照条件下易变色的原因。根据分析加工过程中硫醇锑可能的结构变化和形成的不同产物,对照不同结构的中间产物对聚氯乙烯样品变色的影响,从而找出该体系的变色原因。结果表明加工时PVC分解的氯化氢与三(巯基乙酸异辛酯)化合物反应生成了三氯化锑,光照时生成的三氯化锑再与PVC分子中氯原子偶合使PVC样品变色。尤其当体系中含有硫醇时,三氯化锑与硫醇共同作用使PVC样品的颜色变化更快。In this paper antimony tris(isooctylthioglycolate)have been prepared as stabilizers for polyvinyl chorine(PVC)and the sheep of PVC was made with it.Structure of the antimony mercaptides in PVC change during the processing lead to color deterioration of PVC sheep under sun light.The result of experiments show that the color deterioration of PVC under sun light is caused by antimony tricholride formed by reaction of antimony tris(isooctylthioglycolate)and HCl during processing.Antimony trichloride with mercaptan in PVC cause quick color deterioration.

关 键 词：硫醇锑 聚氯乙烯 热稳定剂 

分 类 号：TQ265[化学工程—有机化工]