Closed-cell polyurethane in-situ foaming honeycomb for enhanced energy absorption and water intrusion resistance

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成果类型：

期刊论文

作者：

Wang, Hao;Xie, Suchao;Jing, Kunkun;Zheng, Shiwei;Liu, Zinan;...

通讯作者：

Xie, SC

作者机构：

[Xie, SC; Xie, Suchao; Jing, Kunkun; Liu, Zinan; Zheng, Shiwei; Wang, Hao] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China.

[Xie, Suchao; Jing, Kunkun; Liu, Zinan; Zheng, Shiwei; Wang, Hao] Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Peoples R China.

[Xie, Suchao; Jing, Kunkun; Liu, Zinan; Zheng, Shiwei; Wang, Hao] Natl & Local Joint Engn Res Ctr Safety Technol Rai, Changsha 410075, Peoples R China.

[Zhou, Hui] Cent South Univ Forestry & Technol, Sch Logist & Transportat, Changsha 410075, Peoples R China.

通讯机构：

[Xie, SC ] C

Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China.

语种：

英文

关键词：

Honeycomb structure;Closed-cell polyurethane foam;Mechanical properties;Energy absorption;Water intrusion resistance

期刊：

Alexandria Engineering Journal

ISSN：

1110-0168

年：

2025

卷：

114

页码：

572-587

DOI：

10.1016/j.aej.2024.12.011

基金类别：

National Natural Science Foundation of China [52202455]; China Scholarship Council [202406370213]; Natural Science Foundation of Hunan Province [2023JJ31015]; Science and Technology Innovation Program of Hunan Province [2024RC1019]; Shenghua Yuying Talents Program of Central South University

机构署名：

本校为其他机构

院系归属：

交通运输与物流学院

摘要：

To achieve novel core with high energy absorption and strong water intrusion resistance, a composite structure was created by employing in-situ foaming of closed-cell polyurethane (PU) in a honeycomb structure. Experimental, theoretical, and finite element analyses revealed that the in-situ foaming technique increased the honeycomb's energy absorption by 312.84 % and improved impact efficiency by 61.45 % while maintaining specific energy absorption (SEA). Remarkably, this composite structure surpassed the energy absorption capacity of individ...

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Closed-cell polyurethane in-situ foaming honeycomb for enhanced energy absorption and water intrusion resistance

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