The influence of annealing conditions, blending and chemical modification on the fracture behaviors of the co-polypropylene (PP) sheets at low cross-head speed was investigated by means of the essential work of fracture (EWF) method.

• 本文运用基本断裂功(EWF)方法研究了热处理、化学和共混改性对共聚聚丙烯(PP)在低拉伸速率下断裂破坏行为的影响，并对材料的形态结构与断裂行为参数的关系进行了比较和分析。