MPP微孔发泡材料缓冲性能研究

The Performance Research of MPP Micro Cellular Foamed Material

为降低对产品的冲击,对新型MPP（Microcellular Polypropylene foam）材料的性能进行研究.通过对MPP材料的试验,利用MATLAB对数据进行分析处理,得到其不同发泡倍数的应力-应变曲线;通过换算,得出其应力-缓冲系数的分布图.试验数据表明,缓冲系数随着应力的增大,呈现出先增大后减小,再增大趋势;缓冲系数随着发泡倍数的增加而减小,且缓冲系数最大时对应的应力为0.3-0.6MPa.结果表明：MPP作为一种新型缓冲材料,根据其缓冲系数-应力曲线图,可以计算出对应所需材料的厚度,对其在缓冲包装设计时提供了设计依据,同时对以后的相关试验和优化具有重要的参考意义.

In order to reduce the impact on the product,studies one kind of new MPP material performance. Through the test of MPP material,carries on analysis processing using MATLAB to the data,obtains its different foaming multiple stress-strain curve; Through the conversion,obtains its stress-cushion coefficient the distribution map. Test data shows that cushioning as the stress increases,showing first increases and then decreases,another trend; cushioning but decreases with the increase of multiple foam and cushioning coefficient corresponding to the maximum stress 0. 3 ~ 0. 6 MPa. The result indicated that,the corresponding to the desired thickness of the material could be calculated with the cushion coefficient-max stress curve of the MPP,which is a new buffer materials. It could provide the design basis in the cushion packaging design,and it has a key implication for future testing and optimization as well.