加有MFIAA的PP/PET原位成纤复合材料的微纤形态与力学性能  

The Microfibril Morphology and Mechanical Properties of PP/PET In-Situ Fiberized Composites with MFIAA

作　　者：刘俊[1] 徐慧玲[1] 曹燕霞[1] 王经武[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450052

出　　处：《塑料》2008年第6期57-60,共4页Plastics

摘　　要：采用溶剂刻蚀、偏光显微镜观察、力学性能测试等方法,研究了制备工艺、MFIAA含量对加有MFIAA的PP/PET原位成纤复合材料微纤形态和力学性能的影响。结果表明:一步熔融共混法中MFIAA多数在基体中形成微胶束,对PET微纤形态影响不大,微纤与基体之间仍属"硬"结合,PP/PET/MFIAA的刚性和韧性较原料PP均有衰减;钉挂预埋法则是对MFIAA的集中应用,MFIAA多数富集界面区,形成粗细不匀、凹凸不平的异形微纤和柔性界面,微纤与基体之间具有强的界面结合,含7.0%MFIAA的PP/PET-MFIAA复合材料的弯曲模量、拉伸强度和悬臂梁缺口冲击强度分别达到纯PP的1.23、1.04、1.79倍;随着MFIAA含量的增加,PET微纤的异形化程度显著增大,复合材料韧性提高的幅度增大。Using solvent etching, polarized microscope and mechanical properties measuring, the influence of preparation technology,the content of MFIAA on the mierofibril morphology and mechanical properties of PP/PET in-situ fiberized composites with MFIAA were studied. Results showed that most MFIAA formed micromieelles in PP matrix,having inappreciable influence on microfibril morphology by means of one-step melt-blending technology,it was ＂rigidity＂ adhesion between PET mierofibril and PP matrix,both rigidity and toughness of PP/PET/MFIAA were lower than pure PP;using riveting-embedding technology,most MFIAA assembled to the interface region, there were profiled PET microfibril presenting morphology of diameter variation and concave and convex surface and flexible interlayer in the composites, strong interfaeial adhesion was created between PP matrix and PET microflbril. The flexural modulus, tensile yield strength, notched izod impact strength of PP/PET-MFIAA composite containing 7.0 % MFIAA were raised to 1.23,1.04 and 1.79 times as pure PP＇s respectively; increasing the content of MFIAA, the degree of profiled morphology of PET microfibril improved markedly, the toughness of the composites significantly increased.

关 键 词：原位成纤 多功能界面活化剂 制备工艺 钉挂预埋 微纤形态 

分 类 号：O632.12[理学—高分子化学] O632.52[理学—化学]