试样厚度对聚乙烯拉伸性能的影响

Effect of sample thickness on tensile properties of polyethylene

通过对不同厚度聚乙烯试样的拉伸试验进行分析。结果表明,试样厚度对聚乙烯的强度、应变、拉伸模量均有较大影响,对单位面积的屈服吸收能没有影响;现有塑料制品设计中,材料的拉伸性能和制品厚度为独立参数的做法存在隐患。

This paper reported an investigation on the effect of sample thickness on tensile properties of polyethylene(PE). Through the analysis of tensile tests of PE samples with different thickness,the thickness could generate a great influence on the strength,strain and tensile modulus of PE. However,there was no effect on the yield absorption energy per unit area. In the current design of plastic products,there have been hidden dangers with the tensile properties of PE materials and the thickness of products as two independent parameters.