Considerable enhancement of nanothermites propagation through worm-like expansion of expandable graphite

Jiao, Xuehang; Xu, Jianyong; Huo, Hongbiao; Lei, Xiaoting; Cheng, He; Yu, Chunpei; Zhang, Wenchao

doi:10.1016/j.cej.2024.155532

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.155532

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Considerable enhancement of nanothermites propagation through worm-like expansion of expandable graphite

Xuehang Jiao,

Jianyong Xu,

Hongbiao Huo

et al.

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Cited by 2 publications

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Popcorn Effect–inspired Self‐propagating Formation of High‐conductivity Cement Composite for Multifunctional Applications

Wu,

Huang,

et al. 2024

Advanced Science

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The surge in modern civil technologies demands a transformation in cement composites to surpass traditional roles and integrate smart functionalities. In this regard, enhancing the electrical conductivity of cement composites is a critical challenge. This study introduces a novel strategy for the self‐propagating formation of expandable graphite‐based high‐conductivity cement composites through a simple thermal treatment with 3 wt.% expandable graphite and 1 wt.%carbon fiber as conductive fillers. Inspired by the popcorn effect, this method leverages the rapid expansion of graphite at high temperatures, promoting contact between conductive fillers and forming new conductive networks. The obtained composites demonstrate a remarkable reduction of 60% in electrical resistance after heat treatment compared to the electrical resistance of standard cement composites, and the enhancing mechanisms is explored. The conductive properties endow the material with excellent electrothermal (>100 °C at 10 V), electrothermochromic (response time of 2 s), and electromagnetic interference shielding (42 dB at 12.4 GHz) performance. This innovative approach provides vast opportunities for developing smart infrastructure with enhanced electrical properties, regarded as a promising candidate for promoting next‐generation buildings and infrastructures.

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Popcorn Effect–inspired Self‐propagating Formation of High‐conductivity Cement Composite for Multifunctional Applications

Wu,

Huang,

et al. 2024

Advanced Science

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The oxygen vacancy defect induced by Ar plasma significantly reduces the initial reaction energy barrier of micron thermite and improves its combustion reaction efficiency

Zhang,

2025

Applied Surface Science

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Considerable enhancement of nanothermites propagation through worm-like expansion of expandable graphite

Cited by 2 publications

References 47 publications

Popcorn Effect–inspired Self‐propagating Formation of High‐conductivity Cement Composite for Multifunctional Applications

Popcorn Effect–inspired Self‐propagating Formation of High‐conductivity Cement Composite for Multifunctional Applications

The oxygen vacancy defect induced by Ar plasma significantly reduces the initial reaction energy barrier of micron thermite and improves its combustion reaction efficiency

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