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Journal of Advanced Ceramics 2023, 12(1): 36-48 https://doi.org/10.26599/JAC.2023.9220664
Research Article | Open Access | Issue | Published: 08 December 2022

Robust, fire-resistant, and thermal-stable SiZrNOC nanofiber membranes with amorphous microstructure for high-temperature thermal superinsulation

Show Author's Information Xiaoshan ZHANG†,  Nana XU†,  Yonggang JIANG,  Haiyan LIU,  Hui XU,  Cheng HAN,  Bing WANG( ),  Yingde WANG( )
Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

† Xiaoshan Zhang and Nana Xu contributed equally to this work.

Keywords:
thermal stability, thermal insulation, amorphous microstructure, SiZrNOC nanofiber
Cite this article:
ZHANG X, XU N, JIANG Y, et al. Robust, fire-resistant, and thermal-stable SiZrNOC nanofiber membranes with amorphous microstructure for high-temperature thermal superinsulation. Journal of Advanced Ceramics, 2023, 12(1): 36-48. https://doi.org/10.26599/JAC.2023.9220664
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Abstract Full text Electronic supplementary material About this article

Ceramic nanofibers with robust mechanical properties, high-temperature resistance, and superior thermal insulation performance are promising thermal insulators used under extreme conditions. However, developing of ceramic fibers with both low solid thermal conductivity (λs) and low infrared radiation thermal conductivity (λr) is still a great challenge. Herein, according to the Ioffe–Regel limit theory, we report a novel SiZrNOC nanofiber membrane (NFM) with a typically amorphous structure by combining the electrospinning method and high-temperature pyrolysis technique in a NH3 atmosphere. The prepared SiZrNOC NFM has a high tensile strength (1.98±0.09 MPa), excellent thermal stability (1100 ℃ in air), and superior thermal insulation performance. The thermal conductivity of SiZrNOC NFM was 0.112 W·m−1·K−1 at 1000 ℃, which is obviously lower than that of the traditional ceramic fiber membranes (> 0.2 W·m−1·K−1 at 1000 ℃). In addition, the prepared SiZrNOC NFM-reinforced SiO2 aerogel composites (SiZrNOCf/SiO2 ACs) exhibited ultralow thermal conductivity of 0.044 W·m−1·K−1 at 1000 ℃, which was the lowest value for SiO2-based aerogel composites ever reported. Such superior thermal insulation performance of SiZrNOC NFMs was mainly due to significant decreasing of solid heat conduction and thermal radiation by the fancy amorphous microstructure and high infrared shielding compositions. This work not only provides a promising high-temperature thermal insulator, but also offers a novel route to develop other high-performance thermal insulating materials.


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About this article

Robust, fire-resistant, and thermal-stable SiZrNOC nanofiber membranes with amorphous microstructure for high-temperature thermal superinsulation

Show Author's information Xiaoshan ZHANG†, Nana XU†, Yonggang JIANG, Haiyan LIU, Hui XU, Cheng HAN, Bing WANG( ), Yingde WANG( )
Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

† Xiaoshan Zhang and Nana Xu contributed equally to this work.

Abstract

Ceramic nanofibers with robust mechanical properties, high-temperature resistance, and superior thermal insulation performance are promising thermal insulators used under extreme conditions. However, developing of ceramic fibers with both low solid thermal conductivity (λs) and low infrared radiation thermal conductivity (λr) is still a great challenge. Herein, according to the Ioffe–Regel limit theory, we report a novel SiZrNOC nanofiber membrane (NFM) with a typically amorphous structure by combining the electrospinning method and high-temperature pyrolysis technique in a NH3 atmosphere. The prepared SiZrNOC NFM has a high tensile strength (1.98±0.09 MPa), excellent thermal stability (1100 ℃ in air), and superior thermal insulation performance. The thermal conductivity of SiZrNOC NFM was 0.112 W·m−1·K−1 at 1000 ℃, which is obviously lower than that of the traditional ceramic fiber membranes (> 0.2 W·m−1·K−1 at 1000 ℃). In addition, the prepared SiZrNOC NFM-reinforced SiO2 aerogel composites (SiZrNOCf/SiO2 ACs) exhibited ultralow thermal conductivity of 0.044 W·m−1·K−1 at 1000 ℃, which was the lowest value for SiO2-based aerogel composites ever reported. Such superior thermal insulation performance of SiZrNOC NFMs was mainly due to significant decreasing of solid heat conduction and thermal radiation by the fancy amorphous microstructure and high infrared shielding compositions. This work not only provides a promising high-temperature thermal insulator, but also offers a novel route to develop other high-performance thermal insulating materials.

Keywords: thermal stability, thermal insulation, amorphous microstructure, SiZrNOC nanofiber

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Publication history

Received: 06 July 2022
Revised: 06 September 2022
Accepted: 23 September 2022
Published: 08 December 2022
Issue date: January 2023

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© The Author(s) 2022.

Acknowledgements

This work was supported by the Defense Industrial Technology Development Program (No. JCKY2017****), the National Natural Science Foundation of China (Nos. 51773226, 52002400, and 51872329), Natural Science Foundation of Hunan Province (No. 2018JJ3603), Key Research and Development of Hunan Province (No. 2022GK2027), and Research Project of National University of Defense Technology (No. ZK20-08).

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