EPO材料缓冲性能的探究

Cushioning Performance of EPO Materials

目的通过试验对比EPE,EPS,EPO等3种材料缓冲性能的优劣。方法对一定规格的3种材料试样进行静态压缩试验、动态压缩试验,并结合Ansys有限元仿真技术,进行数据处理分析。结果在静态缓冲特性试验中,当材料所受应力大于3.5 kPa且小于180 kPa时,EPO与EPE及EPS的静态缓冲性能系数大小关系为EPE<EPO<EPS;当应力小于3.5 kPa或者大于180 kPa时,EPO的静态缓冲系数最小,即此时EPO的静态缓冲性能优于EPE和EPS。从动态缓冲特性试验中可知,静应力小于10 kPa时,3种材料的缓冲性能大小为EPS<EPO<EPE;当静应力大于14kPa时,缓冲性能大小排序为EPS>EPO>EPE;静应力大小介于10 kPa和14 kPa之间时,3种材料具有相似的缓冲效果。EPO材料动态缓冲特性处于EPE以及EPS之间,当静应力较大时,EPO呈现出与EPE更相近的性能,缓冲性能较EPS有所提升。结论经测试比较,EPO材料具有较好的缓冲性能,某些环境下可以作为新缓冲包装材料使用,未来有较好的发展前景。

The work aims to compare the advantages and disadvantages of cushioning performance of EPE, EPS and EPO through tests. Static compression test, dynamic compression test and Ansys finite element simulation technology were used for data processing and analysis of three kinds of material samples with certain specifications. In the static cushioning characteristic tests, when the stress on the material was greater than 3.5 kPa and less than 180 kPa, the relationship between EPO, EPE and EPS static cushioning performance coefficients was EPE<EPO<EPS. When the stress was less than 3.5 kPa or greater than 180 kPa, the static cushioning coefficient of EPO was the least, i.e. the static cushioning performance of EPO was superior to EPE and EPS at this time. It could be seen from the dynamic cushioning characteristic tests that, when the static stress was less than 10 kPa, the cushioning performance of these three materials was EPS<EPO<EPE. When the static stress was more than 14 kPa, the priority of cushioning performance was EPS>EPO>EPE. When the static stress was between 10 kPa and 14 kPa, these three materials had similar cushioning effect. When the dynamic cushioning performance of EPO was in the middle of EPE and EPS, and the static stress was large, the performance of EPO was more similar to EPE, and the cushioning performance was improved compared with EPS. Through testing and comparison, EPO material has better cushioning characteristics, and can be used as new cushioning package in some environments, so it has a better development prospect in the future.