稀土β成核剂对等规聚丙烯流变性能的影响  

Effect of Rare Earth β Nucleating Agent on Rheological Behavior of Isotactic Polypropylere

作　　者：张洁[1] 李景宜[1] 张梅[1] 丁会利[1] 

机构地区：[1]河北工业大学化工学院高分子科学研究所,天津300130

出　　处：《塑料助剂》2012年第2期40-43,共4页Plastics Additives

摘　　要：研究了稀土β成核剂WBG-1对等规聚丙烯(iPP)的加工和挤出流变性能的影响,研究发现,0.1%(质量分数)WBG-1的加入使iPP粘流活化能变大;在剪切速率相同的情况下,随β成核剂浓度的增大,剪切压力具有减小的趋势;在低剪切速率范围内,成核剂的加入使相同剪切速率下iPP的剪切粘度变小,但随着剪切速率的增大,剪切粘度随剪切速率变化的曲线出现明显的靠拢。The effect of rare earth β-nucleating agent WBG-1 on processing and rheological properties of extruded of isotactic polypropylene（iPP） was studied.The results show that according to the addition of nucleating agent,the flow activation energy of iPP modified by 0.1%WBG-1 is large;shear stress has the trend to decrease with the β nucleating agents increase at the same shear rate,shear viscosity decrease when mixed with nucleating agent at the same low shear rate,but shear viscosity-shear rate curves shows obvious drawing close when shear rate increases.

关 键 词：等规聚丙烯 稀土β 成核剂 流变性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]