Broadband electromagnetic shielding performance of carbon nanotube-carbon fibre/silicon carbide cross-scale laminated composites

Cai, Yanzhi; Li, Yang; Huang, Shaohua; Cheng, Laifei; Liu, Tingting; Yu, Haiming; Chen, Dengpeng; Hu, Zhongyi; Wang, Yuhan; Zhou, Yuan

doi:10.1016/j.ceramint.2022.05.299

Cited by 8 publications

(7 citation statements)

References 49 publications

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“…The corresponding details of the ltration and inltration process for the BP porous preforms have been described in our previous reports. [42][43][44] The inltrated circular BP preforms were rst cut into rectangles and then helically convolved. Herein, the self-sealing layered ber structural preform was formed by four pieces of the inltrated BP preform rectangles stacked in turn helically convolving from inside to outside.…”

Section: Preparation Of Cssls Compositesmentioning

confidence: 99%

“…3b, d and f). 43,44 Theoretically, a dense structural layer results in relatively strong mechanical properties, while a porous interfacial layer has relatively weak mechanical properties. However, a loose and porous interfacial layer is more favorable for microwave transmission than a dense structural layer.…”

Section: Morphological and Structural Characteristics Of The Compositesmentioning

confidence: 99%

“…Moreover, CNT BP facilitates the assembly of 3D multilayer structures. 42,43 Based on this, a College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, P. R. China. E-mail: caiyanzhi@xauat.edu.cn b Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China a new concept of a CNT BP/SiC self-sealing layered (CSSL) structure was proposed in this research.…”

Section: Introductionmentioning

confidence: 99%

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Fiber, monolithic fiber and twisted fiber structures: efficient microwave absorption via surface-modified carbon nanotube buckypaper/silicon carbide-based self-sealing layered composites

Guo,

Cai,

Cheng

et al. 2024

J. Mater. Chem. A

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Section: Preparation Of Cssls Compositesmentioning

confidence: 99%

Section: Morphological and Structural Characteristics Of The Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fiber, monolithic fiber and twisted fiber structures: efficient microwave absorption via surface-modified carbon nanotube buckypaper/silicon carbide-based self-sealing layered composites

Guo,

Cai,

Cheng

et al. 2024

J. Mater. Chem. A

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“…11,12 This approach significantly diminishes or entirely eliminates EM radiation through energy conversion or destructive interference, offering a more robust and superior means of reducing the detrimental effects of EM pollution. 13,14 An excellent absorption-dominated EMI shielding material should possess low density, 15 strong absorption capability, 16 T h i s c o n t e n t i s broadband response, 17 and low cost 18 to be applicable in various industries. In general, two approaches can be considered when it comes to the design of an ideal absorption-dominated EMI shielding material; one is material selection and the other is structural design.…”

Section: Introductionmentioning

confidence: 99%

“…An excellent absorption-dominated EMI shielding material should possess low density, strong absorption capability, broadband response, and low cost to be applicable in various industries. In general, two approaches can be considered when it comes to the design of an ideal absorption-dominated EMI shielding material; one is material selection and the other is structural design.…”

Section: Introductionmentioning

confidence: 99%

Incorporating Loss Factor Modular Design for Full Ku-Band Microwave Attenuation in Double-Layered Graphene Aerogels

Ashouri-Sanjani,

Salari,

Rahmati

et al. 2023

ACS Appl. Mater. Interfaces

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The fabrication of absorption-dominant electromagnetic interference (EMI) shielding materials is a pressing priority to prevent secondary electromagnetic pollution in miniaturized electronic devices and communication systems. Meeting this goal has remained a tough challenge to keep pace with the rapid evolution of electronics due to the complex compositional and structural design and narrow operating bands. This work articulates a sound and simple strategy to precisely modulate the electrical conductivity of reduced graphene oxide (rGO), as the building block in lightweight double-layered rGOfilm/rGO-aerogel/polyvinyl-alcohol (PVA) composites, for efficient microwave absorption over the entire Ku-band frequency range. These constructs reasonably comprised a porous absorption structure built from parallel rGO sheets aligned and prepared via freeze casting followed by freeze drying. The electrical conductivity and impedance of this layer were tuned by varying the annealing temperature from 400 to 800 °C, thereby adjusting the degree of reduction and the absorption characteristic. This layer was backed by a highly conductive rGO film reduced at a high temperature of 1000 °C, with a reflectivity of 97.5%. The incorporation of this film ensured high EMI shielding effectiveness of the double-layered structure through the absorption−reflection−reabsorption mechanism, consistent with the predicted values based on calculated loss factors and the input impedance of the structure. Accordingly, at an average EMI shielding effectiveness of 57.59 dB, the reflection shielding effectiveness (SE R ) and reflectivity (R) of the assembled composites were optimized to be as low as 0.22 dB and 0.049, respectively. This equates to approximately 99.999% shielding (SE T ) and ∼95% absorptivity (A) of the incident wave. This study opens new avenues for the development of lightweight (with a density as low as 15 mg/cm 3 ) absorption-dominant EMI shielding composite materials with promising EMI shielding efficiency and potential applications in modern electronics.

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Electromagnetic and microwave absorption properties of flexible fabric coatings containing Ag decorated spherical graphene powders with FSS incorporation

Liu,

Wang,

Wang

et al. 2024

Ceramics International

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Broadband electromagnetic shielding performance of carbon nanotube-carbon fibre/silicon carbide cross-scale laminated composites

Cited by 8 publications

References 49 publications

Fiber, monolithic fiber and twisted fiber structures: efficient microwave absorption via surface-modified carbon nanotube buckypaper/silicon carbide-based self-sealing layered composites

Fiber, monolithic fiber and twisted fiber structures: efficient microwave absorption via surface-modified carbon nanotube buckypaper/silicon carbide-based self-sealing layered composites

Incorporating Loss Factor Modular Design for Full Ku-Band Microwave Attenuation in Double-Layered Graphene Aerogels

Electromagnetic and microwave absorption properties of flexible fabric coatings containing Ag decorated spherical graphene powders with FSS incorporation

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