Lightweight, Flexible, and Covalent-Bonding Phenolic Fabric Reinforced Phenolic Ablator for Thermal Insulation and Conformal Infrared Stealth

Huang, He; Li, Jinliang; Wang, Wei; Jin, Xiangyu; Wang, Hebing; Wu, Can; Pan, Yiwu; Han, Wenbo; Hong, Changqing; Zhang, Xinghong

doi:10.1021/acsami.3c16147

Cited by 6 publications

(1 citation statement)

References 44 publications

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“…To overcome the above-mentioned issues that occurred in the APD process, different reinforcements have been introduced to enhance the rigidity of phenolic resin wet gel, such as polymer fiber felts [ 20 , 21 ], carbon fiber felts [ 22 , 23 ] and ceramic fiber felts [ 24 , 25 ]. The introduction of these reinforcements makes the synthesis of PRAs easier and inhibits the shrinkage of wet gels.…”

Section: Introductionmentioning

confidence: 99%

Improving Pore Characteristics, Mechanical Properties and Thermal Performances of Near-Net Shape Manufacturing Phenolic Resin Aerogels

Sha,

Dai,

Wang

et al. 2024

Polymers

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Thermally stable high-performance phenolic resin aerogels (PRAs) are of great interest for thermal insulation because of their light weight, fire retardancy and low thermal conductivity. However, the drawbacks of PRA synthesis, such as long processing time, inherent brittleness and significant shrinkage during drying, greatly restrict their wide applications. In this work, PRAs were synthesized at ambient pressure through a near-net shape manufacturing technique, where boron-containing thermosetting phenolic resin (BPR) was introduced into the conventional linear phenolic resin (LPR) to improve the pore characteristics, mechanical properties and thermal performances. Compared with the traditional LPR-synthesized aerogel, the processing time and the linear shrinkage rate during the drying of the PRAs could be significantly reduced, which was attributed to the enhanced rigidity and the unique bimodal pore size distribution. Furthermore, no catastrophic failure and almost no mechanical degradation were observed on the PRAs, even with a compressive strain of up to 60% at temperatures ranging from 25 to 200 °C, indicating low brittleness and excellent thermo-mechanical stability. The PRAs also showed outstanding fire retardancy. On the other hand, the PRAs with a density of 0.194 g/cm3 possessed a high Young’s modulus of 12.85 MPa and a low thermal conductivity of 0.038 W/(m·K).

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Section: Introductionmentioning

confidence: 99%

Improving Pore Characteristics, Mechanical Properties and Thermal Performances of Near-Net Shape Manufacturing Phenolic Resin Aerogels

Sha,

Dai,

Wang

et al. 2024

Polymers

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Fire‐Safe Aerogels and Foams for Thermal Insulation: From Materials to Properties

Feng,

Ma,

et al. 2024

Advanced Materials

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The ambition of human beings to create a comfortable environment for work and life in a sustainable way has triggered a great need for advanced thermal insulation materials in past decades. Aerogels and foams present great prospects as thermal insulators owing to their low density, good thermal insulation, mechanical robustness, and even high fire resistance. These merits make them suitable for many real‐world applications, such as energy‐saving building materials, thermally protective materials in aircrafts and battery, and warming fabrics. Despite great advances, to date there remains a lack of a comprehensive yet critical review on the thermal insulation materials. Herein, recent progresses in fire‐safe thermal‐insulating aerogels and foams are summarized, and pros/cons of three major categories of aerogels/foams (inorganic, organic and their hybrids) are discussed. Finally, key challenges associated with existing aerogels are discussed and some future opportunities are proposed. This review is expected to expedite the development of advanced aerogels and foams as fire‐safe thermally insulating materials, and to help create a sustainable, safe, and energy‐efficient society.

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A facile in-situ strategy to fabricate lightweight carbon fiber/silicone-phenolic aerogel composites with superior toughness and ablation performance

Wang,

Xu,

Jia

et al. 2024

J Mater Sci

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Lightweight, Flexible, and Covalent-Bonding Phenolic Fabric Reinforced Phenolic Ablator for Thermal Insulation and Conformal Infrared Stealth

Cited by 6 publications

References 44 publications

Improving Pore Characteristics, Mechanical Properties and Thermal Performances of Near-Net Shape Manufacturing Phenolic Resin Aerogels

Improving Pore Characteristics, Mechanical Properties and Thermal Performances of Near-Net Shape Manufacturing Phenolic Resin Aerogels

Fire‐Safe Aerogels and Foams for Thermal Insulation: From Materials to Properties

A facile in-situ strategy to fabricate lightweight carbon fiber/silicone-phenolic aerogel composites with superior toughness and ablation performance

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