Highly compressible and anisotropic lamellar ceramic sponges with superior thermal insulation and acoustic absorption performances

被引:274
作者
Jia, Chao [1 ]
Li, Lei [1 ]
Liu, Ying [2 ,3 ]
Fang, Ben [2 ,3 ]
Ding, He [4 ]
Song, Jianan [1 ]
Liu, Yibo [5 ]
Xiang, Kejia [1 ]
Lin, Sen [1 ]
Li, Ziwei [1 ]
Si, Wenjie [1 ]
Li, Bo [5 ]
Sheng, Xing [6 ]
Wang, Dongze [7 ]
Wei, Xiaoding [2 ,3 ]
Wu, Hui [1 ]
机构
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Peking Univ, Coll Engn, Dept Mech & Engn Sci, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
[3] Peking Univ, Beijing Innovat Ctr Engn Sci & Adv Technol, Beijing 100871, Peoples R China
[4] Beijing Inst Technol, Sch Opt & Photon, Beijing Engn Res Ctr Mixed Real & Adv Display, Beijing 100081, Peoples R China
[5] Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Shenzhen 518055, Peoples R China
[6] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Dept Elect Engn, Beijing 100084, Peoples R China
[7] Tsinghua Univ, Dept Energy & Power Engn, Beijing 100084, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
SOUND-ABSORPTION; AEROGEL; LIGHTWEIGHT; ULTRALIGHT; CONDUCTIVITY; COMPOSITES; PROPERTY; POROSITY; FIBERS; LIGHT;
D O I
10.1038/s41467-020-17533-6
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Advanced ceramic sponge materials with temperature-invariant high compressibility are urgently needed as thermal insulators, energy absorbers, catalyst carriers, and high temperature air filters. However, the application of ceramic sponge materials is severely limited due to their complex preparation process. Here, we present a facile method for large-scale fabrication of highly compressible, temperature resistant SiO2-Al2O3 composite ceramic sponges by blow spinning and subsequent calcination. We successfully produce anisotropic lamellar ceramic sponges with numerous stacked microfiber layers and density as low as 10mgcm(-3). The anisotropic lamellar ceramic sponges exhibit high compression fatigue resistance, strain-independent zero Poisson's ratio, robust fire resistance, temperature-invariant compression resilience from -196 to 1000 degrees C, and excellent thermal insulation with a thermal conductivity as low as 0.034Wm(-1) K-1. In addition, the lamellar structure also endows the ceramic sponges with excellent sound absorption properties, representing a promising alternative to existing thermal insulation and acoustic absorption materials. Temperature-invariant highly compressible ceramic sponges are attractive for thermal insulators and energy absorbers, but development is limited by complex preparation processes. Here the authors report large-scale fabrication of silica-alumina composite ceramic sponges via blow spinning and calcination.
引用
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页数:13
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