聚丙烯/聚对苯二甲酸乙二酯共混自增强材料的研究(Ⅰ)

Study on polypropylene/poly(ethylene terephthalate) self reinforced blends materials

本文根据聚丙烯（ＰＰ）与聚对苯二甲酸乙二醇酯（ＰＥＴ）共混对在熔 融状态下．流动粘度差阳溶度参数差大的特点，用挤出造粒的方法制得 共熔成纤目增强材料。通过扫描电镜观察．证实ＰＰ／ＰＥＴ比从９５／５到 ８０／２０时。ＰＥＴ均以纤维状结构分布在ＰＰ基质中。该共熔成纤体具有 良好的机械性能。在未加偶联剂时，拉伸强度虽略比纯ＰＰ低．但抗冲击 强度与纯ＰＰ相当。该结果可用于指导ＰＰ的改性和ＰＥＴ废料再生利用 工作。

Based on quite difference of melt flow viscosity and solubility parameter of polypropylene (PP)and poly (ethylene terephthalate) (PET ), the self reinforced blends for PP/PET is made by extrusion, in which fiber morphology of PET is formed in the PP malrix when PP/PET is from 95/5 to 80/20. The fiber morphology of PET is ob- served under SEM and the diameter of the fiber is from 2 to 10μ Although the tensile strength of the materials slightly drow down the impact strength increase compared to that of pure PP.