自增强聚丙烯材料的结构形态

Structural Morphology of Self-Reinforced Polypropylene

采用普通挤出机与收敛式挤出机头，通过熔体连续挤出的方法制备了厚度为１．５ｍｍ的自增强聚丙烯（ＰＰ）片材。通过扫描电镜观察、显微硬度测定与透光率测试，与普通片材进行对比研究。结果表明，自增强试样内形成了伸直链微纤结构形态。

Self-reinforced polypropylene sheets (15mm thickness) have been prepared using a conventional extruder and a conical die from continuous melt extrusion. The scanning electron micrograph observation and microhardness and light transmittance measurements are used to characterize the normal and selfreinforced sheets This study demonstrates that the extendedchain microfibrious structural morphology is formed in the selfreinforced sample along the extrusion direction. The microfibril is the reinforced phase in the selfreinforced polymerical materials