聚氯乙烯有机稀土热稳定剂的制备与性能研究  

Preparation and Properties of Organic Rare-earth Heat Stabilizer for PVC

作　　者：朱军峰[1,2] 张光华[1,2] 董惟昕[1] 申淞夫[1] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021 [2]教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《塑料科技》2010年第9期77-80,共4页Plastics Science and Technology

基　　金：陕西省咸阳市科技计划项目(XK0909-17)

摘　　要：分别制备了硬脂酸镧和甘油锌两种聚氯乙烯(PVC)热稳定剂,通过络合滴定法对稳定剂样品进行产率分析,并用熔点仪测试其熔点,讨论了制备两种稳定剂较适宜的工艺,然后将两种稳定剂以不同比例与PVC粉末进行复合,并对复合后的PVC混合粉进行了刚果红测试和热稳定白度测试。结果表明:当硬脂酸镧与甘油锌的质量比为3:1时,刚果红测试的稳定时间为48'58'';165℃下老化10min后的白度为85.53%,其稳定性能较佳。Two kinds of heat stabilizers for PVC, lanthanum stearate and glyzinc were prepared respectively. The yields of the heat stabilizers were analyzed and the melting points of theirs were measured. The optimum preparation process of the stabilizers was discussed. Then the above stabilizers were compounded with PVC powder. The heat stability of the compound was characterized by Congo red test and aging whiteness. The results showed that the stability time was 48＇58＇＇, and aging whiteness was 85.53% after been aged for 10min under 165 ℃ when mass rate of lanthanum stearate to glyzinc was 3：1.

关 键 词：聚氯乙烯 硬脂酸镧 甘油锌 热稳定性能 复合稳定剂 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]