期刊
NANO RESEARCH
卷 15, 期 7, 页码 6662-6669出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-022-4214-9
关键词
thermal insulation; mechanical robustness; super-hydrophobicity; nanocomposites
类别
资金
- U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE) under the Building Technology Office (BTO) Award [DE-EE0008675]
Flexible hierarchical superhydrophobic ceramic insulation nanocomposites were successfully fabricated through the densified architectured hierarchical nanostructures, radiative insulation coating, and interfacial cross-linking among composites. The lightweight ceramic nanocomposites exhibit high-temperature fire resistance, super-hydrophobicity, and mechanical robustness, offering potential applications in high-temperature thermal insulation under high mechanical loading conditions.
Flexible and lightweight thermal insulation materials with hierarchical microstructures are ubiquitous in thermal management and protection systems. Ceramic aerogels promise high-temperature thermal insulation but lack mechanical robustness, while the fibrous materials with excellent mechanical elasticity display modest thermal insulation. Here we describe flexible hierarchical superhydrophobic ceramic insulation nanocomposites through the densified architectured hierarchical nanostructures, radiative insulation coating, and interfacial cross-linking among composites. The lightweight flexible ceramic nanocomposites exhibit a density of 0.13 g/cm(3), high-temperature fire resistance with thermal conductivity of 0.024 W/(m.K), and super-hydrophobicity with the water contact angle of 152 degrees. The mechanical robustness and high-temperature thermal insulation of ceramic nanocomposites, together with its soundproof performance, shed light on the low-cost flexible insulation materials manufacturing with scalability for high-temperature thermal insulation applications under high mechanical loading conditions.
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