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Lightweight, Thermally Insulating, Fire‐Proof Graphite‐Cellulose Foam.

Authors :
Chen, Chaoji
Zhou, Yubing
Xie, Weiqi
Meng, Taotao
Zhao, Xinpeng
Pang, Zhenqian
Chen, Qiongyu
Liu, Dapeng
Wang, Ruiliu
Yang, Vina
Zhang, Huilong
Xie, Hua
Leiste, Ulrich H.
Fourney, William L.
He, Shuaiming
Cai, Zhiyong
Ma, Zhenqiang
Li, Teng
Hu, Liangbing
Source :
Advanced Functional Materials. 2/2/2023, Vol. 33 Issue 6, p1-10. 10p.
Publication Year :
2023

Abstract

Foam materials are widely used in packaging and buildings for thermal insulation, sound absorption, shock absorption, and other functions. They are dominated by petroleum‐based plastics, most of which, however, are not biodegradable nor fire‐proofing, leading to severe plastic pollution and safety concerns. Here, a fire‐proofing, thermally insulating, recyclable 3D graphite‐cellulose nanofiber (G‐CNF) foam fabricated from resource‐abundant graphite and cellulose is reported. A freeze‐drying‐free and scalable ionic crosslinking method is developed to fabricate Cu2+ ionic crosslinked G‐CNF (Cu‐G‐CNF) foam with a low energy consumption and cost. Moreover, the direct foam formation strategy enables local foam manufacturing to fulfil the local demand. The ionic crosslinked G‐CNF foam demonstrates excellent water stability (the foam can maintain mechanical robustness even in wet state and recover after being dried in air without deformation), fire resistance (41.7 kW m−2 vs 214.3 kW m−2 in the peak value of heat release rate) and a low thermal conductivity (0.05 W/(mK)), without compromising the recyclability, degradability, and mechanical performance of the composite foam. The demonstrated 3D G‐CNF foam can potentially replace the commercial plastic‐based foam materials, representing a sustainable solution against the "white pollution". [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1616301X
Volume :
33
Issue :
6
Database :
Academic Search Index
Journal :
Advanced Functional Materials
Publication Type :
Academic Journal
Accession number :
161657405
Full Text :
https://doi.org/10.1002/adfm.202204219