镧铈稀土PVC热稳定剂的制备及性能研究  

Study on Performance of La/Ce Rare-earth PVC Thermal Stabilizer and Its Preparation

作　　者：李梅[1] 姜在勇[1] 柳召刚[1] 胡艳宏[1] 王觅堂[1] 王海鸥[1] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古自治区稀土现代冶金新技术与应用重点实验室,内蒙古包头014010

出　　处：《塑料科技》2013年第1期101-104,共4页Plastics Science and Technology

基　　金：国家杰出青年基金(51025416);长江学者和创新团队发展计划资助项目(IRT1065);内蒙古自治区高等学校创新团队发展计划(NMGIRT1104)

摘　　要：以包头稀土矿初步分离得到的镧铈混合稀土、氰尿酸、硝酸、氢氧化钠为原料合成了聚氯乙烯(PVC)热稳定剂——氰尿酸镧铈,通过刚果红试纸法研究了氰尿酸镧铈对PVC的热稳定作用及变色情况的影响,并与氰尿酸镧、硬脂酸镧、硬脂酸钙、硬脂酸锌等热稳定剂进行了比较。结果表明:氰尿酸镧铈具有良好的热稳定作用,其热稳定效果与硬脂酸镧相近,略逊于氰尿酸镧,但完全可以作为热稳定剂单独使用,从而省掉分离镧铈混合稀土而产生的额外费用。A rare-earth PVC thermal stabilizer— La/Ce cyanurate was prepared from cyanuric acid,sodium hydroxide,nitric acid and La/Ce rare-earth primary separating from Baotou rare-earth mine.The effects of La/Ce cyanurate served as thermal stabilizer on PVC stability and discoloration were studied and compared with other stabilizers by Congo-red test paper.The results show that the LaCe cyanurate has favorable stabilization efficiency similar to lanthanum stearate（slightly worse than lanthanum cyanurate）,and can be used as single stabilizer in PVC,therefore,the extra cost which coming from the separation of La-Ce rare-earth can be saved.

关 键 词：聚氯乙烯 氰尿酸稀土 镧 铈 热稳定剂 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]