摘要
通过微纳层状共挤出技术制备了聚丙烯(PP)和PP/POE交替多层共混物。通过扫描电镜、差示扫描量热分析、动态力学分析以及力学性能测试对比研究了交替多层共混物和PP/POE普通共混物的结构与力学性能的关系。结果表明,与含有相同乙烯-辛烯共聚物(POE)含量的普通共混物相比,交替多层共混物的低温冲击强度(-40℃)、弯曲强度和弯曲模量都得到了明显的提升。由于在交替多层结构中刚性的PP层和韧性的PP/POE层能够相互支撑,使得材料获得了优异的综合性能。
Polypropylene（PP）and PP/ethylene-1-octene copolymer（POE）alternating multilayered blends were successfully fabricated through multilayered co-extrusion technology.The structure-property relationship of alternating multilayered blends and conventional blends were investigated comparatively through SEM,DSC,DMA and mechanical properties characterization.The results show that low temperature impact strength（-40 ℃）,flexural strength and flexural modulus of alternating multilayered blends are enhanced simultaneously compared with those of conventional blends.The rigidity PP layer and ductile PP/POE layer in the alternating multilayered structure can support each other,and thus make the material obtain excellent comprehensive performance.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2015年第10期48-51,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(51273132
50933004
51227802)
关键词
聚丙烯
共挤出
低温韧性
交替多层结构
结构-性能关系
polypropylene
co-extrusion
low temperature toughness
alternating multilayered structure
structure-property relationship
