孙德强,金强维,李国志.发泡聚丙烯动态缓冲性能分析[J].包装工程,2019,40(3):114-119.
SUN De-qiang,JIN Qiang-wei,LI Guo-zhi.Analysis on Dynamic Cushioning Property of Expanded Polypropylene Materials[J].Packaging Engineering,2019,40(3):114-119. |
| 发泡聚丙烯动态缓冲性能分析 |
| Analysis on Dynamic Cushioning Property of Expanded Polypropylene Materials |
| 投稿时间：2018-07-03 修订日期：2019-02-10 |
| DOI：10.19554/j.cnki.1001-3563.2019.03.016 |
| 中文关键词: 聚丙烯材料 动态压缩试验 最大加速度-静应力曲线 缓冲系数-最大静应力曲线 |
| 英文关键词: expanded polypropylene materials dynamic crushing acceleration-static stress curve cushioning coefficient-static stress curve |
| 基金项目:国家自然科学基金（51575327）；陕西省教育厅重点实验室及基地项目（16JS014）；陕西省教育厅2014陕西本科高校专业综合改革试点子项目（陕教高[2014]16号） |
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| 中文摘要: |
| 目的 研究发泡聚丙烯材料的动态缓冲特性。方法 对发泡聚丙烯材料进行动态压缩试验，分析密度、厚度、跌落高度对发泡聚丙烯动态缓冲性能的影响。结果 发泡聚丙烯密度越大，动态压缩特性曲线最低点对应的加速度和静应力越大，最小缓冲系数越大。发泡聚丙烯厚度越大，曲线最低点对应的最大加速度越小，对应的静应力越大。随着跌落高度的增加，曲线最低点对应的最大加速度逐渐增加，静应力逐渐减小。结论 在安全范围内，考虑到轻量化和成本因素，选择缓冲材料时需要综合考虑材料的密度、厚度以及实际的运输环境。 |
| 英文摘要: |
| The work aims to study the dynamic cushioning property of expanded polypropylene materials. Dynamic compression test was carried out to the expanded polypropylene materials and the effects of densities, thickness and drop height on dynamic cushioning property of expanded polypropylene were analyzed. The higher the density of expanded polypropylene was, the greater the acceleration and static stress corresponding to the lowest point of the dynamic cushioning property curve were, and the greater the lowest point of the buffer coefficient was. The thicker the expanded polypropylene was, the smaller the maximum acceleration at the lowest point of the curve was and the greater the static stress was. With the increases of drop height, the maximum acceleration corresponding to the lowest point of the curve increased, but the static stress decreased. For the weight reduction and cost saving, the polypropylene materials should be selected within a safe range with reference to density, thickness and actual transportation environment of materials. |
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