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Nano Research 2023, 16(1): 33-44 https://doi.org/10.1007/s12274-022-4743-2
Research Article | Issue | Published: 05 August 2022

Multifunctional tubular carbon nanofibers/polyurethane electromagnetic wave absorber with room-temperature self-healing and recyclable performance

Show Author's Information Shuai Kang2,  Shiya Qiao3,  Yutong Cao4,  Zuming Hu1,2( ),  Na Li2( ),  Junrong Yu1,2,  Yan Wang2
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
Shanghai Collaborative Innovation Center for High Performance Fiber Composites, Donghua University, Shanghai 201620, China
Sinochem International Corporation, Shanghai 200126, China
Keywords:
microwave absorption, room-temperature, self-healing, tubular carbon nanofibers, recyclability
Topics:
Carbon
Cite this article:
Kang S, Qiao S, Cao Y, et al. Multifunctional tubular carbon nanofibers/polyurethane electromagnetic wave absorber with room-temperature self-healing and recyclable performance. Nano Research, 2023, 16(1): 33-44. https://doi.org/10.1007/s12274-022-4743-2
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Abstract Full text Electronic supplementary material About this article

Incorporating self-healing and recyclable capabilities into microwave absorbing materials is expected to facilitate the life extension, cost reduction, and performance stability, thereby meeting the practical applications. In this research, a recycling and room-temperature self-healing electromagnetic wave (EMW) absorber is designed, in which linear polyurethane cross-linked by aromatic disulfide bonds is used as healable matrix, and tubular carbon nanofibers (TCNFs) are employed to attenuate microwave. The resultant composites with a TCNFs content of 7 wt.% harvest a minimum reflection loss (RLmin) of −39.0 dB and an effective absorption bandwidth (EAB) of 2.9 GHz at a matching thickness of 4.0 mm. Driven by the reversible dynamic bonds including hydrogen bonds and aromatic disulfide bonds, the high healing efficiency of 88.7% at 25 °C and 93.2% at 60 °C is presented. Impressively, even after three repairing cycles at room temperature, a healable efficiency of 86.4% is acquired, and RLmin can still reach −39.1 dB at the same thickness, together with an EAB of 3.0 GHz. Additionally, the results of solvent recycling experiment manifest that the recycled specimen achieves the almost similar mechanical and microwave dissipation properties as original one. These attractive characteristics make the designed self-healing and recyclable composites promising for next-generation EMW consumption devices.


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Electronic supplementary material
About this article

Multifunctional tubular carbon nanofibers/polyurethane electromagnetic wave absorber with room-temperature self-healing and recyclable performance

Show Author's information Shuai Kang2, Shiya Qiao3, Yutong Cao4, Zuming Hu1,2( ), Na Li2( ), Junrong Yu1,2, Yan Wang2
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
Shanghai Collaborative Innovation Center for High Performance Fiber Composites, Donghua University, Shanghai 201620, China
Sinochem International Corporation, Shanghai 200126, China

Abstract

Incorporating self-healing and recyclable capabilities into microwave absorbing materials is expected to facilitate the life extension, cost reduction, and performance stability, thereby meeting the practical applications. In this research, a recycling and room-temperature self-healing electromagnetic wave (EMW) absorber is designed, in which linear polyurethane cross-linked by aromatic disulfide bonds is used as healable matrix, and tubular carbon nanofibers (TCNFs) are employed to attenuate microwave. The resultant composites with a TCNFs content of 7 wt.% harvest a minimum reflection loss (RLmin) of −39.0 dB and an effective absorption bandwidth (EAB) of 2.9 GHz at a matching thickness of 4.0 mm. Driven by the reversible dynamic bonds including hydrogen bonds and aromatic disulfide bonds, the high healing efficiency of 88.7% at 25 °C and 93.2% at 60 °C is presented. Impressively, even after three repairing cycles at room temperature, a healable efficiency of 86.4% is acquired, and RLmin can still reach −39.1 dB at the same thickness, together with an EAB of 3.0 GHz. Additionally, the results of solvent recycling experiment manifest that the recycled specimen achieves the almost similar mechanical and microwave dissipation properties as original one. These attractive characteristics make the designed self-healing and recyclable composites promising for next-generation EMW consumption devices.

Keywords: microwave absorption, room-temperature, self-healing, tubular carbon nanofibers, recyclability

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Publication history
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Acknowledgements

Publication history

Received: 13 May 2022
Revised: 10 June 2022
Accepted: 03 July 2022
Published: 05 August 2022
Issue date: January 2023

Copyright

© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

This work was financially supported by the National Key Research and Development Program of China (No. 2021YFB3700101).

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