摘要
采用乳液聚合方法,分别以甲基丙烯酸甲酯(MMA)、苯乙烯(ST)为壳,以高岭土为核制备具有核壳结构的共聚物。将制得的两种核壳结构复合粒子添加到聚丙烯(PP)中,对PP进行改性。结果表明:共混体系为非牛顿假塑性流体,其表观黏度随剪切速率的增大而减小;共混物非牛顿流动指数下降,剪切速率上升,流变性能改善;加入核壳结构复合粒子后,共混物黏流活化能增大,从而黏温依赖性增大。
A kind of core-shell microstructure polymer which selected Kaolin as nuclear,methyl methacrylate（MMA） and styrene（ST） as shell,was prepared by using emulsion polymerization methods.PP was modified by adding the two kinds of core-shell microstructure composite particles.The results showed that the blend systems were non-Newtonian pseudoplastic fluid,and its apparent viscosity decreased as the shear rate increased.The non-Newtonian index decreased,the shear rate of the blend increased,and the rheological property was improved.The viscous flow activation energy of the blend increased with the addition of core-shell structure composite particles,and then the viscosity-temperature dependence increased.
出处
《塑料科技》
CAS
北大核心
2010年第5期43-46,共4页
Plastics Science and Technology
关键词
聚丙烯
核壳结构
流变性
甲基丙烯酸甲酯
苯乙烯
Core-shell microstructure
Rheological behavior
Methyl methacrylate
Styrene
