Nano-Micro Letters, Volume. 16, Issue 1, 223(2024)

Lightweight Dual-Functional Segregated Nanocomposite Foams for Integrated Infrared Stealth and Absorption-Dominant Electromagnetic Interference Shielding

Zhonglei Ma1,4、*, Ruochu Jiang1,4, Jiayao Jing2, Songlei Kang2, Li Ma3, Kefan Zhang1,4, Junxian Li1, Yu Zhang1, Jianbin Qin1,4, Shuhuan Yun1, and Guangcheng Zhang1,4、**
Author Affiliations
  • 1MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
  • 2College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710072, People’s Republic of China
  • 3Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, ON M5S 3G8, Canada
  • 4Chongqing Innovation Center, Northwestern Polytechnical University, Chongqing 401135, People’s Republic of China
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    Lightweight infrared stealth and absorption-dominant electromagnetic interference (EMI) shielding materials are highly desirable in areas of aerospace, weapons, military and wearable electronics. Herein, lightweight and high-efficiency dual-functional segregated nanocomposite foams with microcellular structures are developed for integrated infrared stealth and absorption-dominant EMI shielding via the efficient and scalable supercritical CO2 (SC-CO2) foaming combined with hydrogen bonding assembly and compression molding strategy. The obtained lightweight segregated nanocomposite foams exhibit superior infrared stealth performances benefitting from the synergistic effect of highly effective thermal insulation and low infrared emissivity, and outstanding absorption-dominant EMI shielding performances attributed to the synchronous construction of microcellular structures and segregated structures. Particularly, the segregated nanocomposite foams present a large radiation temperature reduction of 70.2 °C at the object temperature of 100 °C, and a significantly improved EM wave absorptivity/reflectivity (A/R) ratio of 2.15 at an ultralow Ti3C2Tx content of 1.7 vol%. Moreover, the segregated nanocomposite foams exhibit outstanding working reliability and stability upon dynamic compression cycles. The results demonstrate that the lightweight and high-efficiency dual-functional segregated nanocomposite foams have excellent potentials for infrared stealth and absorption-dominant EMI shielding applications in aerospace, weapons, military and wearable electronics.

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    Zhonglei Ma, Ruochu Jiang, Jiayao Jing, Songlei Kang, Li Ma, Kefan Zhang, Junxian Li, Yu Zhang, Jianbin Qin, Shuhuan Yun, Guangcheng Zhang. Lightweight Dual-Functional Segregated Nanocomposite Foams for Integrated Infrared Stealth and Absorption-Dominant Electromagnetic Interference Shielding[J]. Nano-Micro Letters, 2024, 16(1): 223

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    Paper Information

    Category: Research Articles

    Received: Mar. 26, 2024

    Accepted: May. 22, 2024

    Published Online: Jan. 23, 2025

    The Author Email: Ma Zhonglei (mazl@nwpu.edu.cn), Zhang Guangcheng (zhangguc@nwpu.edu.cn)

    DOI:10.1007/s40820-024-01450-0

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