Bioinspired SiC aerogels for super thermal insulation and adsorption with super-elasticity over 100,000 times compressions

“…These aerogels are porous network structures formed by the combination of polymer molecules and colloidal particles through hydrogen bonds or van der Waals forces [ 82 ]. Polymer-based organic aerogels utilized for aerospace thermal protection include polyimide [ 83 ] and phenolic [ 84 ].…”

Section: Process and Performance Of The Aerogel For Thermal Protectionmentioning

confidence: 99%

Aerogels for Thermal Protection and Their Application in Aerospace

Jin

Zhou

Liu

et al. 2023

Gels

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With the continuous development of the world’s aerospace industry, countries have put forward higher requirements for thermal protection materials for aerospace vehicles. As a nano porous material with ultra-low thermal conductivity, aerogel has attracted more and more attention in the thermal insulation application of aerospace vehicles. At present, the summary of aerogel used in aerospace thermal protection applications is not comprehensive. Therefore, this paper summarizes the research status of various types of aerogels for thermal protection (oxide aerogels, organic aerogels, etc.), summarizes the hot issues in the current research of various types of aerogels for thermal protection, and puts forward suggestions for the future development of various aerogels. For oxide aerogels, it is necessary to further increase their use temperature and inhibit the sintering of high-temperature resistant components. For organic aerogels, it is necessary to focus on improving the anti-ablation, thermal insulation, and mechanical properties in long-term aerobic high-temperature environments, and on this basis, find cheap raw materials to reduce costs. For carbon aerogels, it is necessary to further explore the balanced relationship between oxidation resistance, mechanics, and thermal insulation properties of materials. The purpose of this paper is to provide a reference for the further development of more efficient and reliable aerogel materials for aerospace applications in the future.

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Pottery‐Inspired Flexible Fire‐Shielding Ceramifiable Silicone Foams for Exceptional Long‐Term Thermal Protection

Chen,

Wu,

Liu

et al. 2024

Adv Funct Materials

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Owing to their preeminent properties, including mechanical flexibility, thermal insulation, and low cost, silicone foams are widely used in industrial fields. However, flame‐induced structural failure greatly restricts their practical applications. It is challenging for flexible silicone foams to realize reliable thermal protection in thermo–mechanical–oxidative environments. Inspired by traditional pottery, a multiscale‐filler synergistic ceramifiable strategy for creating silicone foam nanocomposites with flexibility and long‐term fireproofing is proposed herein. The foam materials not only maintain mechanical flexibility and elasticity (≈2% residual strain after 1000 cycles) at a temperature range of −60–210 °C but also exhibit exceptional long‐term (>30 min) thermal insulation upon exposure to ≈1300 °C oxidative environments because of their ability to form a gradient robust porous ceramic structure. Moreover, the foam material can provide stable thermal protection for electric cables and lithium‐ion battery packs, making it one of the most reliable thermal insulation materials so far. This work broadens the applications of silicone foams in emerging fields where mechanical buffering and fireproofing are required.

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Bioinspired SiC aerogels for super thermal insulation and adsorption with super-elasticity over 100,000 times compressions

Cited by 29 publications

References 57 publications

Bioinspired aerogels: ingenious structure, remarkable performance, and versatile applications

Bioinspired aerogels: ingenious structure, remarkable performance, and versatile applications

Aerogels for Thermal Protection and Their Application in Aerospace

Pottery‐Inspired Flexible Fire‐Shielding Ceramifiable Silicone Foams for Exceptional Long‐Term Thermal Protection

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