A quantitative analysis of the effect of interface delamination on the fracture behavior and toughness of multilayered propylene–ethylene copolymer/low density polyethylene films by the essential work of fracture (EWF)
A quantitative analysis of the effect of interface delamination on the fracture behavior and toughness of multilayered propylene–ethylene copolymer/low density polyethylene films by the essential work of fracture (EWF)
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DOI：
10.1016/j.polymer.2014.01.039
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发表时间：
2014-03
期刊：
影响因子：
4.6
通讯作者：
Guan-song He;Jiang Li;Fengshun Zhang;Fan Lei;Shaoyun Guo
中科院分区：
文献类型：
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作者：
Guan-song He;Jiang Li;Fengshun Zhang;Fan Lei;Shaoyun Guo
采用微层共挤出体系制备了多层丙烯-乙烯共聚物(CPP)/低密度聚乙烯(LDPE)复合材料片材。首次将基本断裂功方法用于定量评价层状材料的断裂行为。实验结果表明，多层材料中的二维层状界面对断裂行为有重要影响。由于界面分层，断裂的特定基本功We随层数增加。此外，随着层数的增加，不同的测试速度对特定的基本断裂功WE的增加趋势具有双重影响。
The multilayered propylene–ethylene copolymer (CPP)/low density polyethylene (LDPE) composite sheets were prepared by the microlayered coextrusion system. The essential work of fracture (EWF) method was firstly used to quantitatively evaluate the fracture behavior of layered materials. The experimental results indicated that the two-dimensional layered interfaces in the multilayered materials could play an important role in the fracture behavior. The specific essential work of fracture,we, increased with the layers due to interfacial delamination. Additionally, the different testing speeds had a dual effect on the increscent trend of the specific essential work of fracture,we, with increasing layers.