摘要
利用自主设计的多级拉伸挤出设备,制备了聚丙烯/(聚酰胺+炭黑)(PP/(PA1010+CB))复合材料,该聚合物熔体在挤出过程中受纵向拉伸力(F∥)和横向拉伸力(F⊥)的双向拉伸作用。通过扫描电子显微镜观察,随着分散相(PA1010+CB)含量的增加,CB在PA1010中含量的增加,相容剂含量的降低,分散相(PA1010+CB)的尺寸变大且变形能力增强,此时F⊥发挥作用,使分散相发生横向变形。体系中尺寸较大的分散相形成二维片状,尺寸较小的分散相形成纤维状。
The polypropylene/polyamide1010/carbon black(PP/PA1010/CB) composites were prepared through multistage stretching extrusion.When the polymeric melts flowed through one laminating-multiplying elements(LME),there were two forces that longitudinal stretching force(F∥) and transverse tensile force(F⊥) produced and made the melts thinner and wider,similar to a biaxial-stretching process.The morphology of the blends was studied by scanning electron microscope(SEM).The results show that as the contents of(PA1010 + CB) and CB in the PA1010 increase,or the percentage of compatible agent decreases,F⊥ plays a role in the transverse deformation after the dispersed phase becomes bigger and more easier to deform.So both fibrous and lamellate dispersed phase in the composites were found.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2012年第2期84-86,91,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50603016,50773047和50933004)
关键词
聚丙烯
聚酰胺
炭黑
多级拉伸挤出
相形态
polypropylene
polyamide1010
carbon black
multistage stretching extrusion
phase morphology