β成核剂提高纳米碳酸钙在PP中分散性的研究  

Improving Nano-CaCO_3 Dispersion in Polypropylene by β Nucleation Agent

作　　者：张宇[1] 刘洪[1] 张蕾[1] 张杰[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《现代塑料加工应用》2013年第1期31-34,共4页Modern Plastics Processing and Applications

摘　　要：研究了聚丙烯(PP)中β成核剂和纳米碳酸钙的相互作用,并提出了这种相互作用的理论模型。结果表明:在PP中β成核剂对纳米碳酸钙有一定的促进分散作用;在试样中添加纳米碳酸钙质量分数为7.5%时,添加质量分数0.05%比添加质量分数0.20%的β成核剂对纳米碳酸钙的分散作用更好;对β晶的相对结晶度来说,纳米碳酸钙对质量分数0.05%β成核剂填充样品几乎没有影响,而对质量分数0.20%β成核剂填充的样品影响较大。The i was studied. A m that the β-NA has nteraction between nano-CaCO3 and β nucleation agent （β-NA） in PP echanism model of the interaction was proposed. a ＂promoting dispersion effect＂ on the dispersion The results show of nano-CaC03 in PP. However, ＂promoting dispersion effect＂ of the sample with 0.05% β-NA than that of the sample with 0.20% β-NA when nano-CaCOa is 7.5%. For the is better relative crystallinity of β crystals, the nano-CaCOs content has little influence on the samples with 0.05% β-NA, but ohvious effort on the samples with 0. 20% β-NA.

关 键 词：聚丙烯 Β成核剂 纳米碳酸钙 分散作用 结晶度 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]