摘要
为研究正辛基笼形倍半硅氧烷(O-POSS)对等规聚丙烯(iPP)的改性作用,合成了O-POSS并将其与iPP共混制备了iPP/O-POSS纳米复合材料,研究了O-POSS含量对复合材料的流变性、力学性能和结晶行为的影响。结果表明,O-POSS的加入可改善iPP的流动性,熔体假塑性增强;加入O-POSS后复合材料的球晶尺寸变小,熔点和结晶度提高,且有助于改善材料的力学性能,O-POSS含量为4%～6%(质量分数,下同)时,复合材料有较好的力学性能。
N-octyl polyhedral oligomeric silsesquioxane （O-POSS） was synthesized and introduced into iPP forming nanocomposites. The rheological, mechanical, and crystallization behaviors and properties of the composites were investigated. It showed that O-POSS improved the rheological behavior, increased the crystallinity and melting temperature of iPP. When the amount of O-POSS was between 4 % and 6 % , the composites gave rise to excellent mechanical properties.
出处
《中国塑料》
CAS
CSCD
北大核心
2011年第11期34-38,共5页
China Plastics
关键词
聚丙烯
笼形倍半硅氧烷
流变行为
力学性能
结晶性能
polypropylene
silsesquioxane
rheological behavior
mechanical property
crystallization property
