Multifunctionalization is the development direction of personal thermal energy regulation equipment in the future.However,it is still a huge challenge to effectively integrate multiple functionalities into one material.In this study,a simple thermochemical process was used to prepare a multifunctional SiC nanofiber aerogel spring(SiC NFAS),which exhibited ultralow density(9 mg/cm3),ultralow thermal conductivity(0.029 W/(m·K)at 20℃),excellent ablation and oxidation resistance,and a stable three-dimensional(3D)structure that composed of a large number of interlacing 3C-SiC nanofibers with diameters of 300-500 nm and lengths in tens to hundreds of microns.Furthermore,the as-prepared SiC NFAS displayed excellent mechanical properties,with a permanent deformation of only 1.3％at 20℃after 1000 cycles.Remarkably,the SiC NFAS exhibited robust hyperelasticity and cyclic fatigue resistance at both low(～-196℃)and high(～700℃)temperatures.Due to its exceptional thermal insulation performance,the SiC NFAS can be used for personal thermal energy regulation.The results of the study conclusively show that the SiC NFAS is a multifunctional material and has potential insulation applications in both low-and high-temperature environments.

Limeng SONG;Bingbing FAN;Yongqiang CHEN;Qiancheng GAO;Zhe LI;Hailong WANG;Xinyue ZHANG;Li GUAN;Hongxia LI;Rui ZHANG

School of Material Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,China;School of Materials Science and Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450015,China;School of Materials Science and Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China

先进陶瓷（英文版）

[1]Limeng SONG;Bingbing FAN;Yongqiang CHEN;Qiancheng GAO;Zhe LI;Hailong WANG;Xinyue ZHANG;Li GUAN;Hongxia LI;Rui ZHANG-.Ultralight and hyperelastic SiC nanofiber aerogel spring for personal thermal energy regulation)[J].先进陶瓷（英文版）,2022(08):1235-1248

Multifunctionalization,NFAS,hyperelasticity

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