蜂窝厚度对纸蜂窝/聚乙烯泡沫复合层状结构的动态缓冲吸能特性的影响

doi:10.19491/j.issn.1001-9278.2020.08.006

中国塑料 ›› 2020, Vol. 34 ›› Issue (8): 36-43.DOI: 10.19491/j.issn.1001-9278.2020.08.006

蜂窝厚度对纸蜂窝/聚乙烯泡沫复合层状结构的动态缓冲吸能特性的影响

康健芬, 郭彦峰(), 付云岗, 韦青, 吉美娟

西安理工大学印刷包装与数字媒体学院，西安 710048

收稿日期:2020-02-21 出版日期:2020-08-26 发布日期:2020-08-26
基金资助:
国家自然科学基金项目(51345008);西安市科技计划项目（2017080CG/RC043(XALG024);陕西省重点研发计划项目(2018GY?191)

Influence of Honeycomb Thickness on Dynamic Cushioning Energy Absorption of Paper Honeycomb/Polyethylene Foam Composite⁃layered Structure

Jianfen KANG, Yanfeng GUO(), Yungang FU, Qing WEI, Meijuan JI

Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, China

Received:2020-02-21 Online:2020-08-26 Published:2020-08-26
Contact: Yanfeng GUO E-mail:guoyf@xaut.edu.cn

摘要/Abstract

摘要：

针对纸蜂窝与聚乙烯泡沫的2种复合层状结构的缓冲防护作用，研究分析在不同跌落冲击条件下蜂窝厚度对其加速度响应、压缩变形和缓冲吸能特性的影响规律。在静态压缩中一层蜂窝对应一个应力波峰，而跌落冲击动态压缩中较大厚度蜂窝会出现次坍塌行为导致的小应力波峰，蜂窝厚度的增加能够提高聚乙烯泡沫及其复合层状结构的抗冲击能力。对于厚度为10、15、20、25 mm的纸蜂窝与聚乙烯泡沫的复合层状结构，在低冲击能量作用下蜂窝厚度的增加降低了缓冲吸能特性，而在高冲击能量作用下蜂窝厚度的增加能提高能量吸收能力。但是，大厚度70 mm纸蜂窝与聚乙烯泡沫的复合层状结构的缓冲吸能效果相对较差。对于相同的蜂窝厚度情况，在相同的冲击质量或冲击能量作用下，单面复合层状结构的应变能、比吸能和行程利用率相比双面复合层状结构分别提高了11.5 %、39.1 %和16.2 %，缓冲吸能效果更好。

关键词: 纸蜂窝, 聚乙烯泡沫, 复合层状结构, 跌落冲击, 缓冲吸能特性

Abstract:

Aimed at the cushioning and protective functions of composite-layered structures of paper honeycomb and polyethylene closed-cell foam, the influence of honeycomb thickness on their acceleration response, compression deformation and cushioning energy absorption under different drop impact conditions were studied. One layer of honeycomb corresponded to a stress wave peak in the static compressions, and a small stress wave peak of sub-collapse behavior occurred in the larger thickness honeycomb in the dynamic compression of drop impacts. The impact resistance of polyethylene foam and its composite-layered structures were improved with the increase of honeycomb thickness. For the composite-layered structures of paper honeycomb and polyethylene foam with the honeycomb thicknesses of 10, 15, 20 and 25 mm, the increase of honeycomb thickness reduced the cushioning energy absorption at low impact energy but enhanced the energy absorption capability at high impact energy. However, the cushioning energy absorption of composite-layered structures with a large honeycomb thickness of 70mm was relatively poor. For the structures with the same honeycomb thickness, the strain energy, specific energy absorption and stroke efficiency of single-sided composite-layered structures were improved by 11.5 %, 39.1 % and 16.2 %, respectively, compared to the double?sided composite layered structures under the same impact mass or drop impact energy, indicating better cushioning energy absorption.

Key words: paper honeycomb, polyethylene foam, composite layered structure, drop impact, cushioning energy absorption

中图分类号:

TQ325.1⁺2

康健芬, 郭彦峰, 付云岗, 韦青, 吉美娟. 蜂窝厚度对纸蜂窝/聚乙烯泡沫复合层状结构的动态缓冲吸能特性的影响[J]. 中国塑料, 2020, 34(8): 36-43.

Jianfen KANG, Yanfeng GUO, Yungang FU, Qing WEI, Meijuan JI. Influence of Honeycomb Thickness on Dynamic Cushioning Energy Absorption of Paper Honeycomb/Polyethylene Foam Composite⁃layered Structure[J]. China Plastics, 2020, 34(8): 36-43.

图/表 8

试样编号	结构形式	结构类型
(1) 静态：H/55	蜂窝/泡沫
(2) 跌落冲击：H/55?DH?W	蜂窝/泡沫
(1) 静态：H/55/H	蜂窝/泡沫/蜂窝
(2) 跌落冲击：H/55/H?DH?W	蜂窝/泡沫/蜂窝

表1 试样结构类型与编号

Tab.1 Structures and specimen numbering

图1 跌落冲击加速度响应时程曲线

Fig.1 Acceleration response curves of drop impacts

图2 层状结构10/55/10的静态压缩曲线和变形特征

Fig.2 Static compression curve and deformation characteristics

图3 双面复合层状结构的动态压缩曲线特征

Fig.3 Dynamic compression characteristics of double?sided composite layered structures

图4 单面复合层状结构的动态压缩变形特征

Fig.4 Dynamic compression deformation characteristics of single?sided composite layered structures

图5 不同冲击质量下跌落冲击应力?应变曲线

Fig.5 Drop impact stress?strain curves with different impact masses

图6 蜂窝厚度和冲击质量对关键吸能指标的影响

Fig. 6 Influence of honeycomb thickness and impact mass on key energy?absorbing indices

图7 蜂窝厚度和冲击能量对关键吸能指标的影响

Fig.7 Influence of honeycomb thickness and impact energy on key energy?absorbing indices

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蜂窝厚度对纸蜂窝/聚乙烯泡沫复合层状结构的动态缓冲吸能特性的影响

Influence of Honeycomb Thickness on Dynamic Cushioning Energy Absorption of Paper Honeycomb/Polyethylene Foam Composite⁃layered Structure

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