石油化工2023，Vol.52Issue(12)：1695-1701,7.DOI:10.3969/j.issn.1000-8144.2023.12.009
高流动高抗冲聚丙烯结构与性能研究
Study on structures and properties of high-fluidity and high-impact polypropylene
张志箭 1杨芝超 1杜亚锋 1张雅茹 1赵梦垚1
作者信息
- 1. 中石化(北京)化工研究院有限公司,北京 100013
- 折叠
摘要
Abstract
High-impact polypropylene(hiPP)with high-fluidity has high melting flow rate and outstanding impact resistance while maintaining good rigidity.It is suitable for household appliances,office supplies,automotive interior and exterior parts,etc.,and has a large demand.Three domestic high-fluidity hiPP resins were selected and their crystallization behavior,dynamic thermomechanical properties,rheological properties,phase structure,and mechanical properties were investigated.The experimental results reveal that hiPP-1 has the highest rubber content,broad molecular weight distribution,and contains crystallizable ethylene segments,resulting in the best low-temperature impact resistance but relatively lower modulus and melt fluidity.hiPP-3 exhibits the smallest Mw,and the highest glass transition temperature(Tg)of rubber phase,the rubber is uniformly dispersed and the phase domain size is small,but the low-temperature impact toughness is the lowest.hiPP-2 exhibits the lowest Tg of rubber phase,maintaining a high melting flow rate while obtaining the best balance of rigidity and impact toughness.关键词
高抗冲聚丙烯/高熔体流动速率/结构/性能/刚韧平衡Key words
high impact polypropylene/high melting flow rate/structure/property/rigidity toughness balance分类
化学化工引用本文复制引用
张志箭,杨芝超,杜亚锋,张雅茹,赵梦垚..高流动高抗冲聚丙烯结构与性能研究[J].石油化工,2023,52(12):1695-1701,7.
