己二酸锌钙皂-纳米氧化铈/氧化镧对PVC/ASA的热稳定作用  

Thermal Stabilization Effect of Zn/Ca Adipate with Nano-CeO_2 or La_2O_3 on PVC/ASA Blend

作　　者：杜永刚[1] 王昕[1] 文卓奇 赵旭辉[1] 高俊刚[2] 

机构地区：[1]石家庄铁道大学材料科学与工程学院,河北石家庄050043 [2]河北大学化学与环境科学学院,河北保定071002

出　　处：《中国塑料》2016年第1期104-108,共5页China Plastics

摘　　要：合成了己二酸锌钙皂,并将纳米氧化铈和氧化镧分别作为共稳定剂制备了新型复合热稳定剂。采用刚果红法、热失重分析仪、动态力学分析仪等考查了复合热稳定剂对聚氯乙烯/丙烯酸酯-苯乙烯-丙烯腈接枝共聚物(PVC/ASA)共混材料的热稳定效果及动态力学性能。结果表明,稀土化合物作为共稳定剂可以提高己二酸锌钙皂对PVC/ASA共混材料的热稳定效果,氧化镧与己二酸锌钙皂的协同效果优于纳米氧化铈,而纳米氧化铈的加入可以提高材料的热变形温度。Nano-CeO2 or La2 03 was introduced into znic/calcium adipate system as a co-stabilizer for PVC/ASA blends. The thermal stbility of resultant PVC/ASA blends was investigated by Congo red method and thermogravimetric analysis. The dynamic mechanical properties were also investigated. It was found that the thermal stability of PVC/ASA blends was enhanced when the rare earth compounds were used. The synergistic effect of lanthanum oxide with metal soaps was better than that of nano-cerium oxide. Moreover, the thermal distortion temperature of the blends was increased when nano-cerium oxide was added.

关 键 词：聚氯乙烯 丙烯酸酯-苯乙烯-丙烯腈接枝共聚物 热稳定剂 氧化铈 氧化镧 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]