The essential work of fracture (EWF) method was employed to determine the fracture toughness of four types of co-polypropylene, while the thermal properties and mechanical properties of the materials were analyzed.

• 采用基本断裂功方法(EWF)评价了四种不同牌号共聚聚丙烯材料的断裂韧性和塑性功,并结合材料的热性能及力学性能进行了分析。