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High temperature ceramic thermal insulation material
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DOI：10.1007/s12274-022-4214-9.png)
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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.
Keyword:
thermal insulation
mechanical robustness
super-hydrophobicity
nanocomposites
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9
论文数:
7.4K
被引数:
4.9W
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