A distinct structure of TiC for electromagnetic interference shielding and thermal stability of SiTiOC ceramic nanocomposites

Cao, Qingyuan; Jiang, Wen; Qian, Hanqi; Huang, Yudong; Jiang, Bo

doi:10.1016/j.ceramint.2023.05.292

Cited by 13 publications

(2 citation statements)

References 69 publications

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“…The YAP nanofiber sponge with a density of ∼60 mg/cm 3 exhibits the SSE of 904.1 dB/cm 3 /g at 8–12 GHz. As shown in Figure 5G, we compared the EMI shielding performance of the YAP nanofiber sponge and other composite materials 27,28,44–51 . The results indicate that the YAP nanofiber sponge has low density, good flexibility and elasticity, and excellent thermal/EMI integrated insulation performance.…”

Section: Resultsmentioning

confidence: 98%

An ultralight all‐fiber‐structure sponge with thermal and electromagnetic integrated insulation property

Su,

Lu,

Zhang

et al. 2024

J Am Ceram Soc.

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The integration of thermal and electromagnetic interference (EMI) insulation is of great significance for fields such as aerospace that face extreme environments. The challenge lies in ensuring that the protective layer is lightweight while simultaneously possessing the ability to suppress heat conduction, heat convection, thermal radiation, and electromagnetic radiation. To address these challenges, we propose a novel ultralight all‐fiber‐structure composite sponge, yttria‐stabilized zirconia/polyvinyl butyral‐supported silver (YAP) nanofiber sponge, with ultralight mass (∼65 mg/cm3), exceptionally low thermal conductivity (21 mW/m K at 25°C, and 329 mW/m K at 500°C), and remarkable EMI shielding effectiveness (∼62.6 dB). Moreover, benefiting from its all‐fiber‐structure, the YAP nanofiber sponge can endure 100 cycles of compression up to 50% of its original volume while retaining its mechanical properties with minimal degradation. These characteristics render YAP nanofiber sponge an ideal material for integrated thermal and EMI insulation, offering a promising solution to the rigorous demands of extreme environment protection such as space exploration.

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Section: Resultsmentioning

confidence: 98%

An ultralight all‐fiber‐structure sponge with thermal and electromagnetic integrated insulation property

Su,

Lu,

Zhang

et al. 2024

J Am Ceram Soc.

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show abstract

“…1,2 This pollution not only compromises the usefulness of intelligent electronics but also poses a major risk to human health. 3,4 Therefore, the fabrication of high-performance EMI shielding materials is very important to decrease EMI radiation damage. Especially, the lightweight nature and high efficiency are two critical factors for new-generation EMI materials applied in cars, planes, rockets, and sophisticated electronics.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Macroporous Reduced Graphene Oxide-Mxene Aerogel Decorated with Hollow Mesoporous Carbon Spheres for Absorption-Dominant Electromagnetic Interference Shielding and Efficient Oil/Water Separation

Li,

Hu,

Guan

et al. 2024

ACS Sustainable Chem. Eng.

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Herein, hollow mesoporous carbon sphere (HMCS)/Mxene/rGO aerogels were fabricated by simple hydrothermal reduction self-assembly and freeze-drying treatment. Owing to the unique hollow mesoporous architecture, the HMCS nanoparticles can offer additional incident channels and absorption cavities, enhancing the electromagnetic wave (EMW) loss capacity. Moreover, the fabrication of 3D porous structures and the synergy of multiple losses can extremely reduce impedance mismatching, resulting in more EMWs to incident into the matrix for consumption. In addition, abundant heterointerfaces between rGO, Mxene, and HMCSs lead to the formation of multiple polarization losses, which further improve the electromagnetic interference shielding efficiency (EMI SE). Therefore, benefiting from the hierarchical 3D porous architecture, cooperative electromagnetic wave loss mechanism, and multiple heterointerfaces, the resultant EMI SE of the rGO-Mxene-HMCS aerogel reaches 80 dB at 8.2−12.4 GHz, which is 2.5 times that of the pure rGO aerogel. More interestingly, owing to their hydrophobicity and promising hierarchical porous structure, rGO-Mxene-HMCS composites can efficiently select and adsorb various oils and organic solvents in oil/water mixtures to realize oil/water separation. Remarkably, the rGO-Mxene-HMCS aerogel exhibits an impressive absorption capacity of up to 100−160 times its weight, and it also shows admirable absorption recyclability. Thus, the rGO-Mxene-HMCS aerogel exhibits great potential in the application of electromagnetic shielding and oil/water separation.

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Enhancement in the Electrical Properties and Electromagnetic Interference Shielding Performance of Acrylonitrile–Butadiene–Styrene/Carbon Nanotubes Foams via the Introduction of Bimodal Cell Structures

He,

Zhang,

et al. 2024

Adv Eng Mater

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The cell structures of conductive polymer‐based composite foams significantly influence their electrical properties and electromagnetic interference (EMI) shielding effectiveness (SE), necessitating a thorough understanding of how these properties improve with evolving cell structures. In this study, supercritical CO2 foaming technique was manipulated to fabricate acrylonitrile–butadiene–styrene (ABS)/carbon nanotubes (CNTs) foams. The constant‐temperature mode was used to prepare unimodal foams (UF), while the bimodal foams (BF) were produced by varying‐temperature mode. The foaming properties, electrical conductivity, complex permittivity, and EMI SE of ABS/CNTs foams with various cell structures are methodically investigated at identical volume expansion ratio and CNTs content. The electrical conductivity of bimodal ABS/CNTs foam with CNTs content of 20% (BF‐C20) is 0.2191 S cm−1, higher than that of unimodal ABS/CNTs foam with CNTs content of 20% (UF‐C20) (0.1765 S cm−1) owing to the introduction of bimodal cell structures. Complex permittivity results manifest that at 8.2 GHz, the ε′ and ε″ of BF‐C20 are 67.7 and 74.5, respectively, which are higher than 57.9 and 52.9 of UF‐C20. Among all ABS/CNTs foams, the total EMI SE of BF‐C20 attains the highest EMI shielding value, which reaches 30.2 dB. Furthermore, the absolute shielding effectiveness of BF‐C20 is 188.5 dB (g cm−2)−1, which is 17.3% higher than that of UF‐C20.

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A distinct structure of TiC for electromagnetic interference shielding and thermal stability of SiTiOC ceramic nanocomposites

Cited by 13 publications

References 69 publications

An ultralight all‐fiber‐structure sponge with thermal and electromagnetic integrated insulation property

An ultralight all‐fiber‐structure sponge with thermal and electromagnetic integrated insulation property

Three-Dimensional Macroporous Reduced Graphene Oxide-Mxene Aerogel Decorated with Hollow Mesoporous Carbon Spheres for Absorption-Dominant Electromagnetic Interference Shielding and Efficient Oil/Water Separation

Enhancement in the Electrical Properties and Electromagnetic Interference Shielding Performance of Acrylonitrile–Butadiene–Styrene/Carbon Nanotubes Foams via the Introduction of Bimodal Cell Structures

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