乙酰丙酮镧复合稳定剂对PVC热稳定作用的研究  

Study on the Thermal Stability of PVC by Lanthanum Acetylacetonate Composite Stabilizer

作　　者：陈明光 曹鸿璋[1,2] 于晓丽 葛瑞祥[1,2] 曹露雅 芦婷婷 吴豪 CHEN Ming-guang;CAO Hong-zhang;YU Xiao-li;GE Rui-xiang;CAO Lu-ya;LU Ting-ting;WU Hao(Baotou Research Institute of Rare Earths, Baotou 014030, China;State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China)

机构地区：[1]包头稀土研究院,内蒙古包头014030 [2]白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古包头014030

出　　处：《稀土》2019年第3期89-95,共7页Chinese Rare Earths

基　　金：内蒙古自然科学基金项目(2016MS0214)

摘　　要：通过一步法合成了乙酰丙酮镧化合物,采用EI、IR、XRD对该化合物进行了表征,并对其稀土含量进行了测定;同时将乙酰丙酮镧与硬脂酸锌、水滑石及抗氧剂复配得到了PVC用乙酰丙酮镧复合热稳定剂,并通过烘箱老化实验、转矩流变实验及刚果红实验考察其对PVC热稳定性能的影响。结果表明,180℃的烘箱老化35 min不变黑,动态流变稳定时间为10.8 min,180℃刚果红时间为25.2 min,热稳定性能及加工性能优于普通钙锌稳定剂,具有市场应用前景。In this paper, ethylene acetone lanthanum was synthesized by one-step method and characterized by IR, XRD and rare earth content analysis. At the same time, lanthanum acetylacetonate composite stabilizer for PVC was prepared by mixing lanthanum acetylacetonate with zinc stearate, hydrotalcite and antioxidant. Effect of the stabilizer on thermal stability of PVC was investigated by Congo red experiment, oven aging test and torque rheological experiment. The results show that the oven aging time is more than 35 minutes at 180 ℃, the dynamic rheology stabilization time is 10.8 minutes, Congo red tist result is 25.2 minutes at 180 ℃, and the thermal stability and processing performance are better than the ordinary Ca/Zn stabilizer.

关 键 词：乙酰丙酮镧 稀土复合热稳定剂 热稳定性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]