PP/HDPE复合材料ECAE加工后的结构与性能

STRUCTURE AND PROPERTY OF PP/HDPE COMPOSITES BY EQUAL CHANNEL ANGULAR EXTRUSION PROCESSING

研究了不同共混配比的PP/HDPE复合材料经等通道转角挤压(ECAE)加工后的结构与性能。结果表明,PP/HDPE复合材料经ECAE加工后产生取向,形成各向异性结构;当HDPE质量分数在10%时,ECAE加工可增加PP/HDPE复合材料两组分的界面粘结,导致其冲击强度显著提高;当HDPE质量分数为30%和50%时,ECAE加工可使复合材料两相间的接触面积增加,结合较紧密,但界面粘结仍然较弱,因此其冲击强度提高较小。

The structure and property of PP/HDPE composites by equal channel angular extrusion （ ECAE ） processing were investigated. The results showed that ECAE processing could lead PP/HDPE composites to an orientation state and formed anisotropy. When the content of HDPE was 10%, ECAE processing not only improved the interfacial adhesion between PP and HDPE but also increased impact strength remarkably; when the content of HDPE was 30% or 50%, ECAE processing increased the contact area, while the interface cohesion was faintish, so the impact strength of PP/HDPE composite only increased lightly.