Recent advances in carbon nanotubes-based microwave absorbing composites

Chen, Xiaojun; Li, Hongyang; Hu, Dechao; Liu, Huaqing; Ma, Wenshi

doi:10.1016/j.ceramint.2021.05.219

Cited by 83 publications

(31 citation statements)

References 137 publications

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“…[1] Therefore, extensive research has been made to design electromagnetic interference (EMI) shielding and microwave absorbing materials with high performance and a broadband EM energy absorbing capability. [2][3][4] For the last decades the most common materials to be used as shielding were metals, due to its high electrical and magnetic properties. However they present high density and are susceptible to corrosion.…”

Section: Introductionmentioning

confidence: 99%

Sandwich structures based on fused filament fabrication 3D‐printed polylactic acid honeycomb and poly(vinylidene fluoride) nanocomposites for microwave absorbing applications

et al. 2023

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Polylactic acid (PLA)—based honeycomb samples with different cell sizes and thickness were prepared using the fused filament fabrication (FFF) 3D printing technology and used to build sandwiched multilayer structures consisted of the honeycomb as the core component and poly(vinylidene fluoride) (PVDF) and/or PVDF/carbon nanotube (CNT) nanocomposites as top and bottom layers. The effect of the honeycomb design (cell size and thickness) and the presence and nature of the impedance matching layer on the microwave absorbing properties of the corresponding structures was investigated in the X‐band (8.2–12.4 GHz) and Ku‐band (12.4–18 GHz). For the systems without matching layer or with neat PVDF film as the matching layer, the honeycomb with larger thickness (5 mm) and larger cell size resulted in better electromagnetic wave attenuation but narrow frequency bandwidth with RL below −10 dB. The best combination minimum RL value (−18 to −14 dB) and broad frequency bandwidth with attenuation higher than 90% (around 8 GHz) was achieved with honeycomb of 2 mm thickness sandwiched by PVDF/CNT05 as the matching layer and bottom layer constituted by PVDF/CNT1 film, regardless the cell size of the honeycomb. These results indicate the PLA honeycomb as promising candidate as component for multilayer microwave absorbing materials and open new possibilities of applications of FFF technology for designing flexible, lightweight, and low‐cost materials to be used in both civil and military industries.

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Section: Introductionmentioning

confidence: 99%

Sandwich structures based on fused filament fabrication 3D‐printed polylactic acid honeycomb and poly(vinylidene fluoride) nanocomposites for microwave absorbing applications

et al. 2023

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“…First, the materials have a high dielectric constant. 24 Second, the relatively fixed morphology and structure of materials have limited interaction with EWMs. 25 Therefore, improving the absorption performance and impedance matching is the key to the further applications of carbon materials.…”

Section: Introductionmentioning

confidence: 99%

Polyimide aerogel-derived amorphous porous carbon/crystalline carbon composites for high-performance microwave absorption

et al. 2023

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“…Carbon nanotubes (CNTs), which can be used as additives to improve the EMI shielding effectiveness, demonstrate an excellent electrical conductivity. Additionally, CNTs with a large aspect ratio show outstanding thermal and mechanical properties and are cost-effective compared to graphene [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Therefore, CNTs are considered to be promising EMI shielding additives.…”

Section: Introductionmentioning

confidence: 99%

Carbon Papers from Tall Goldenrod Cellulose Fibers and Carbon Nanotubes for Application as Electromagnetic Interference Shielding Materials

et al. 2022

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To transform tall goldenrods, which are invasive alien plant that destroy the ecosystem of South Korea, into useful materials, cellulose fibers isolated from tall goldenrods are applied as EMI shielding materials in this study. The obtained cellulose fibers were blended with CNTs, which were used as additives, to improve the electrical conductivity. TGCF/CNT papers prepared using a facile paper manufacturing process with various weight percent ratios and thickness were carbonized at high temperatures and investigated as EMI shielding materials. The increase in the carbonization temperature, thickness, and CNT content enhanced the electrical conductivity and EMI SE of TGCF/CNT carbon papers. TGCF/CNT-15 papers, with approximately 4.5 mm of thickness, carbonized at 1300 °C exhibited the highest electrical conductivity of 6.35 S cm−1, indicating an EMI SE of approximately 62 dB at 1.6 GHz of the low frequency band. Additionally, the obtained TGCF/CNT carbon papers were flexible and could be bent and wound without breaking.

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Recent advances in carbon nanotubes-based microwave absorbing composites

Cited by 83 publications

References 137 publications

Sandwich structures based on fused filament fabrication 3D‐printed polylactic acid honeycomb and poly(vinylidene fluoride) nanocomposites for microwave absorbing applications

Sandwich structures based on fused filament fabrication 3D‐printed polylactic acid honeycomb and poly(vinylidene fluoride) nanocomposites for microwave absorbing applications

Polyimide aerogel-derived amorphous porous carbon/crystalline carbon composites for high-performance microwave absorption

Carbon Papers from Tall Goldenrod Cellulose Fibers and Carbon Nanotubes for Application as Electromagnetic Interference Shielding Materials

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