Elytra-mimetic ceramic fiber aerogel with excellent mechanical, anti-oxidation, and thermal insulation properties

Zhong, Yong; Li, Hongyan; Liu, Hongli; Wang, Juanjuan; Han, Xue; Lu, Le Trong; Xia, Shilei

doi:10.1016/j.jeurceramsoc.2022.11.061

Cited by 21 publications

(11 citation statements)

References 45 publications

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“…[3,20,22,24,[54][55][56][57][58][59][60][61] k) Comparison of the fire resistance of FR-SACAs with other types of aerogels. [3,20,22,24,[55][56][57]60,61].…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

“…However, composite, carbon, and alumina aerogels demonstrate good thermal insulation properties and can achieve a temperature reduction effect of over 1000 °C. [3,20,22,24,[54][55][56][57][58][59][60][61] When the thickness of the material ranges from 10 to 15 mm, the thermal insulation performance of FR-SACAs falls within the middle range of these materials. However, when the thickness exceeds 15 mm, FR-SACAs outperform other aerogel materials.…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

“…[23] Furthermore, nanoparticle fibers (NF) prepared by electrostatic spinning were added to SiBCN aerogel, resulting in NF/SiBCN ceramic fiber aerogel with good elasticity and fatigue resistance under high compressive strain and ultra-low thermal conductivity at an ultra-high temperature of 1300 °C. [24] However, the fabrication processes of these aerogels often involve complex procedures and require specialized facilities. Moreover, their resistance to EHT environments, flexibility, and adaptability to various shaped substrates still need further improvement.…”

Section: Introductionmentioning

confidence: 99%

“…j) Comparison of the thermal insulation performance of FR-SACAs with other types of aerogels [3,20,22,24,[54][55][56][57][58][59][60][61]. k) Comparison of the fire resistance of FR-SACAs with other types of aerogels [3,20,22,24,[55][56][57]60,61]…”

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confidence: 99%

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Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Cheng,

Ma,

et al. 2023

Adv Funct Materials

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Effective thermal superinsulation in extremely high temperatures (EHT) is crucial for aerospace, industrial, and civilization activities. However, current strategies relying on ceramic materials face limitations due to their high thermal conductivity and brittleness in specific conditions. In this study, a feasible and scalable method for synthesizing a flexible, lightweight, and transformable fire‐reborn silica‐alumina hybrid ceramic aerogel (FR‐SACA) is presented, which is achieved by rearranging silica aerogel microparticles and Al2O3 ceramic fibers using a self‐sacrifice polymer, resulting in a bio‐inspired bird nest structured FR‐SACA. The SACA exhibits exceptional properties, including an ultra‐low density of 0.01 g cm−3, a low thermal conductivity of 0.029 W m−1 K−1, and a reversible compression of up to 80%. Notably, a 20 mm‐thick FR‐SACA demonstrates a remarkable temperature reduction of 1179.6 °C when exposed directly to a 1300 °C flame, suggesting its potential as a thermal superinsulation material in EHT environments. Furthermore, the transformability of SACA enables in situ fabrication on surfaces with diverse heteromorphic structures, such as flat, bent, and angled shapes, thereby providing thermal superinsulation for various constructions. The Phoenix Nirvana process opens up new possibilities for synthesizing ceramic aerogels with desirable flexibility and adaptive properties, facilitating effective thermal management under extreme conditions.

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“…[3,20,22,24,[54][55][56][57][58][59][60][61] k) Comparison of the fire resistance of FR-SACAs with other types of aerogels. [3,20,22,24,[55][56][57]60,61].…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Cheng,

Ma,

et al. 2023

Adv Funct Materials

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“…According to Planck’s law, the higher the temperature, the more significant the proportion of thermal radiation in heat transfer, and mullite has a high transmission in the infrared light region, so adding an infrared shielding agent is necessary. Among the common infrared shielding agents, such as carbon black, carbon nanotubes, SiC, and metal oxides, , TiO 2 has a high reflection index, thermal stability, and robust broadband absorbing capacity, making it a very efficient shade agent and receives significant attention. , For instance, Zhang et al designed hollow SiO 2 /TiO 2 as a pore-forming agent added to electrospun SiO 2 nanocomposites, which can enhance the infrared thermal radiation shielding performance of SiO 2 nanofibers to reduce thermal conductivity. However, due to the inherent poor temperature resistance of SiO 2 fibers, the apparent adhesion and fusion phenomenon after treatment at 1200 °C could be caused by the crystallite growth in SiO 2 nanofibers, resulting in severe volume shrinkage .…”

Section: Introductionmentioning

confidence: 99%

Mullite Nanosheet/Titania Nanorod/Silica Composite Aerogels for High-Temperature Thermal Insulation

Ji,

Chen,

Xing

et al. 2023

ACS Appl. Nano Mater.

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Ceramic aerogels play an essential role in the field of high-temperature insulation. However, the significant radiation heat transfer limits the practical applicability. Herein, we have chosen mullite nanosheets prepared successfully by chemical blowing as structural assembly units, modified on the surface of mullite nanosheets with TiO 2 nanorods to reduce infrared radiation heat transfer, and prepared mullite nanosheet/TiO 2 nanorod/silica composite aerogels by adding silica sols as hightemperature binder cast molding in the system. The preferred composite aerogels have good temperature resistance, and the linear shrinkage was measured to be only 2% after calcination at 1500 °C for 30 min and had a low thermal conductivity (0.0356 W•m −1 •K −1 at room temperature and 0.118 W•m −1 •K −1 at 1000 °C). This assembly concept pervades a strategy for developing porous aerogel materials for insulation and protection in extreme environments.

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Multiphase Symbiotic Engineered Elastic Ceramic‐Carbon Aerogels with Advanced Thermal Protection in Extreme Oxidative Environments

Chang,

Yang,

Cheng

et al. 2024

Advanced Materials

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Elastic aerogels could dissipate aerodynamic forces and thermal stresses by reversible slipping or deforming to avoid sudden failure caused by stress concentration, making them the most promising candidates for thermal protection in high‐end aerospace applications. However, existing elastic aerogels face difficulties achieving reliable protection above 1500 °C in aerobic environments due to their poor thermomechanical stability and significantly increased thermal conductivity at elevated temperatures. Here, we propose a multiphase sequence and multiscale structural engineering strategy to synthesize mullite‐carbon hybrid nanofibrous aerogels. The heterogeneous symbiotic effect between components simultaneously inhibits ceramic crystalline coarsening and carbon thermal etching, thus ensuring the thermal stability of the nanofiber building blocks. Efficient load transfer and high interfacial thermal resistance at crystalline‐amorphous phase boundaries on the microscopic scale, coupled with mesoscale lamellar cellular and locally closed‐pore structures, achieve rapid stress dissipation and thermal energy attenuation in aerogels. This robust thermal protection material system is compatible with ultralight density (30 mg cm–3), reversible compression strain of 60%, extraordinary thermomechanical stability (up to 1600 °C in oxidative environments), and ultralow thermal conductivity (50.58 mW m–1 K–1 at 300 °C), offering new options and possibilities to cope with the harsh operating environments faced by future space exploration.This article is protected by copyright. All rights reserved

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Elytra-mimetic ceramic fiber aerogel with excellent mechanical, anti-oxidation, and thermal insulation properties

Cited by 21 publications

References 45 publications

Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Mullite Nanosheet/Titania Nanorod/Silica Composite Aerogels for High-Temperature Thermal Insulation

Multiphase Symbiotic Engineered Elastic Ceramic‐Carbon Aerogels with Advanced Thermal Protection in Extreme Oxidative Environments

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