Shear-stiffening porous material with impact-hardening functionality: Application in hydrogen explosion safety protection

被引：3

作者：

Ding, Qingquan ^{[1
]}

Yuan, Bihe ^{[1
]}

Tang, Yi ^{[1
]}

Fan, Chen ^{[1
]}

Huang, Chuyuan ^{[1
]}

Chen, Xianfeng ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Safety Sci & Emergency Management, Wuhan 430070, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 63卷

基金：

中国国家自然科学基金;

关键词：

Hydrogen; Shear-stiffening; Flame and explosion-proof; Porous material; DETONATION PROPAGATION; POLYURETHANE FOAM; INITIAL PRESSURE; FLAME; BEHAVIORS; MIXTURES;

D O I：

10.1016/j.ijhydene.2024.03.259

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, a shear-stiffening composite porous material (PU@CS) was developed using the dipping-drying technique, with polyurethane (PU) as the substrate. PU@CS not only overcomes the cold flow drawbacks of shear-stiffening gel (SSG) but also significantly enhances the mechanical properties of PU (with a one-order-ofmagnitude increase in maximum storage modulus). The introduction of multi-walled carbon nanotubes (MWCNTs) overcomes the electrostatic aggregation drawback of PU. Due to its outstanding shear hardening effect, PU@CS exhibits superior explosion-proof compared to PU, and when filled to a length of 50 cm, it achieves complete quenching of hydrogen gas explosion flames, with a maximum explosion overpressure attenuation ratio of 87.2%. This work provides data support for the application of SSG in the field of explosion protection.

引用

页码：995 / 1002

页数：8

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