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| Mechanical Property and Thermal Insulation Performance of SiO2/ZrO2 Nanofiber Membranes with High Thermal Stability |
XU Hui, ZHANG Peiyuan, XU Nana, LIU Tao, ZHANG Xiaoshan( ), WANG Bing(), WANG Yingde |
| Science and Technology and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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Cite this article:
XU Hui, ZHANG Peiyuan, XU Nana, LIU Tao, ZHANG Xiaoshan, WANG Bing, WANG Yingde. Mechanical Property and Thermal Insulation Performance of SiO2/ZrO2 Nanofiber Membranes with High Thermal Stability. Chinese Journal of Materials Research, 2024, 38(5): 365-372.
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Abstract The high strength, high temperature resistance and high thermal shock resistance of ceramic nanofibers are essential to high temperature thermal insulation materials, which have good application prospects in aerospace and other fields. The low thermal conductivity and good infrared refractive index of ZrO2 nanofibers have attracted much attention in the field of thermal insulation. However, the poor thermal stability (≤ 1200oC) of ZrO2 nanofiber limits their utilization in the field of high-temperature thermal insulation. In this study, a novel membrane of SiO2/ZrO2-0.5 nanofibers (d = 495.8 ± 45.5 nm) with high temperature resistance up to 1300oC was prepared by combining electrospinning technology and preceramic polymer pyrolysis method, the SiO2/ZrO2-0.5 nanofiber composed of amorphous SiO2 phase and t-ZrO2 nanocrystalline. The fabricated SiO2/ZrO2-0.5 nanofiber membrane shows high tensile strength (4.88 ± 0.27 MPa), good flexibility and excellent thermal insulation performance at high temperatures. Finally, it is worth noting in particular that the thermal conductivity of SiO2/ZrO2-0.5 nanofiber membrane is only 0.167 W·m-1·K-1 at 1000oC, which is significantly lower than those of the known traditional ceramic fiber membranes.
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Received: 19 April 2023
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| Fund: Natural Science Foundation of Hunan Province(2021JJ20048);Stable Support for Science Research Projects in Key Laboratories(WDZC20235250501) |
Corresponding Authors:
ZHANG Xiaoshan, Tel: 13739086732, E-mail: zhangxiaoshan15@nudt.edu.cn；
WANG Bing, Tel: 13687399626, E-mail: bingwang@nudt.edu.cn
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