Lightweight and flexible Ag-wrapped polyimide aerogel fabrics for electromagnetic interference shielding

Xue, Tiantian; Fu, Zhipeng; Yu, Dingyi; Yu, Yao; Hu, Zaiyin; Fan, Wei; Liu, Tianxi

doi:10.1016/j.coco.2023.101732

Cited by 14 publications

(1 citation statement)

References 31 publications

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“…Although this method benefits from the abundance of raw materials and simplicity of the process, it was difficult to achieve the desired properties due to their relatively fixed structure. Polymer-based CFs possess a light weight, excellent mechanical properties, and structural designability, making them an important research object. , Polymer-based CFs were obtained by pyrolysis and carbonization of polymer foams, such as lignin, polyacrylonitrile, phenolic resin, and polyimide. , …”

Section: Introductionmentioning

confidence: 99%

Lightweight, Robust, and Multifunctional Polyimide-Based Carbon Foams for Electromagnetic Interference Shielding and Thermal Insulation

Wang,

Zhou,

et al. 2024

Ind. Eng. Chem. Res.

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Polyimide (PI)-based carbon foams (CFs) with excellent compressive strength, thermal insulation, and electromagnetic interference (EMI) shielding properties were fabricated through microsphere foaming and carbonization processes. The cell size of CFs ranged from 207.8 to 563.9 μm and could be regulated by adjusting the size of polyester ammonium salts (PEASs), and the chemical structure depended on the carbonization temperature. The compressive strength of C 1100 -PIF-1 was 0.74 MPa with a density of 119.9 kg•m −3 . The thermal conductivities of C 800 -PIF-1 at room temperature, 500, and 1000 °C were 0.126, 0.202, and 0.252 W•m −1 K −1 , respectively. Furthermore, CFs exhibited excellent EMI shielding properties, with C 1100 -PIF-2 and C 1100 -PIF-3 reaching 56.4 and 42.1 dB at 8.2−12.4 GHz. The electrical conductivity fell in the range of 5.5−38.5 S•m −1 . The CFs fabricated in this work, which combined exceptional mechanical strength, thermal insulation, and EMI shielding properties, had potential applications in aerospace, high-temperature insulation, and chemical catalysis.

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Section: Introductionmentioning

confidence: 99%

Lightweight, Robust, and Multifunctional Polyimide-Based Carbon Foams for Electromagnetic Interference Shielding and Thermal Insulation

Wang,

Zhou,

et al. 2024

Ind. Eng. Chem. Res.

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Hierarchical Polyimide Nonwoven Fabric with Ultralow-Reflectivity Electromagnetic Interference Shielding and High-Temperature Resistant Infrared Stealth Performance

Tang,

Lu,

et al. 2024

Nano-Micro Lett.

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Designing and fabricating a compatible low-reflectivity electromagnetic interference (EMI) shielding/high-temperature resistant infrared stealth material possesses a critical significance in the field of military. Hence, a hierarchical polyimide (PI) nonwoven fabric is fabricated by alkali treatment, in-situ growth of magnetic particles and "self-activated" electroless Ag plating process. Especially, the hierarchical impedance matching can be constructed by systematically assembling Fe3O4/Ag-loaded PI nonwoven fabric (PFA) and pure Ag-coated PI nonwoven fabric (PA), endowing it with an ultralow-reflectivity EMI shielding performance. In addition, thermal insulation of fluffy three-dimensional (3D) space structure in PFA and low infrared emissivity of PA originated from Ag plating bring an excellent infrared stealth performance. More importantly, the strong bonding interaction between Fe3O4, Ag, and PI fiber improves thermal stability in EMI shielding and high-temperature resistant infrared stealth performance. Such excellent comprehensive performance makes it promising for military tents to protect internal equipment from electromagnetic interference stemmed from adjacent equipment and/or enemy, and inhibit external infrared detection.

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Tough and thermal insulating cellulose-based aerogel fiber via long yarn-assisted interfacial polyelectrolyte complexation spinning

Zhu,

Zhao,

Wang

et al. 2024

Carbohydrate Polymers

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Lightweight and flexible Ag-wrapped polyimide aerogel fabrics for electromagnetic interference shielding

Cited by 14 publications

References 31 publications

Lightweight, Robust, and Multifunctional Polyimide-Based Carbon Foams for Electromagnetic Interference Shielding and Thermal Insulation

Lightweight, Robust, and Multifunctional Polyimide-Based Carbon Foams for Electromagnetic Interference Shielding and Thermal Insulation

Hierarchical Polyimide Nonwoven Fabric with Ultralow-Reflectivity Electromagnetic Interference Shielding and High-Temperature Resistant Infrared Stealth Performance

Tough and thermal insulating cellulose-based aerogel fiber via long yarn-assisted interfacial polyelectrolyte complexation spinning

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