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Thermal Insulating and Fire Retardant Si3N4 Nanowires Membranes Resistant to High-Temperatures up to 1300 °C

Yeye Liu1, Leilei Zhang1,*, Ruonan Zhang1, Siqi Shao1, Lina Sun1, Xinyi Wan1, Tiantian Wang1

1 State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi’an, 710072, China

* Corresponding Author: Leilei Zhang. Email: email

The International Conference on Computational & Experimental Engineering and Sciences 2024, 30(2), 1-1. https://doi.org/10.32604/icces.2024.012576

Abstract

Superior thermal insulating and fire-retardant ceramic membranes are urgently demanded in the aerospace, construction and chemical engineering industries. However, the generic characteristics of ceramic membranes, such as brittleness, structural collapse and crystallization-induced pulverization behavior, present a great plague to their practical applications. Herein, we report a highly flexible, mechanically stable, fire retardant and high-temperature-resistant ceramic membrane based on the interlocked Si3N4 nanowires formed by the precursor pyrolysis method. The Si3N4 nanowires membrane (SNM) has excellent high temperature resistance under alcohol lamp and butane spray lance. The thermal insulation with a thermal conductivity as low as 0.056 W/(mK) can be attributed to the high porosity of SNM, which makes it a desirable candidate for heat insulators under harsh conditions. More importantly, SNM exhibits thermal stability and robust mechanical properties in the range of 25 °C to 1300 °C. The high-temperature resistance of SNM up to 1300 °C is achieved by the four stages: Si3N4 nanowires, Si3N4@SiO2 nanowires, SiO2 nanowires and bead-like SiO2 nanowires. After heat-treated at 1300 °C, the macroscopic size of SNM does not change significantly, and the interlocked structure is still maintained. Furthermore, SNM still maintains excellent mechanical properties, with a tensile strength as high as 0.26 MPa. This work provides a facile method for fabricating excellent thermal insulation and flame-retardant ceramic membranes, showing prospective application prospects in the era of thermal insulation materials.

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Cite This Article

APA Style
Liu, Y., Zhang, L., Zhang, R., Shao, S., Sun, L. et al. (2024). Thermal insulating and fire retardant si3n4 nanowires membranes resistant to high-temperatures up to 1300 °C. The International Conference on Computational & Experimental Engineering and Sciences, 30(2), 1-1. https://doi.org/10.32604/icces.2024.012576
Vancouver Style
Liu Y, Zhang L, Zhang R, Shao S, Sun L, Wan X, et al. Thermal insulating and fire retardant si3n4 nanowires membranes resistant to high-temperatures up to 1300 °C. Int Conf Comput Exp Eng Sciences . 2024;30(2):1-1 https://doi.org/10.32604/icces.2024.012576
IEEE Style
Y. Liu et al., “Thermal Insulating and Fire Retardant Si3N4 Nanowires Membranes Resistant to High-Temperatures up to 1300 °C,” Int. Conf. Comput. Exp. Eng. Sciences , vol. 30, no. 2, pp. 1-1, 2024. https://doi.org/10.32604/icces.2024.012576



cc Copyright © 2024 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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