EMI shielding performance of phenolic-based carbon foam modified with GO/SiO2 hybrid nanomaterials

[Display omitted] •The GO/SiO2 hybrid nanomaterials were obtained via in-situ preparation method controllably.•The modified PCF has outstanding EMI shielding performance in the X-band frequency range.•We report a novel and simple modification method for the lightweight EMI shield materials. A facile...

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Bibliographic Details
Published in:Chemical physics letters 2019-01, Vol.715, p.166-172
Main Authors: Zeng, Yao, Luo, Xia, Yu, Kejing, Qian, Kun
Format: Article
Language:English
Subjects:
Conductivity
Electromagnetic shielding
GO/SiO2 hybrid nanomaterials
Phenolic-based carbon foam
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Summary:[Display omitted] •The GO/SiO2 hybrid nanomaterials were obtained via in-situ preparation method controllably.•The modified PCF has outstanding EMI shielding performance in the X-band frequency range.•We report a novel and simple modification method for the lightweight EMI shield materials. A facile way has been investigated to fabricate the phenolic-based carbon foam (PCF) modified with the unique three-dimensional structure of graphene oxide/SiO2 (GO/SiO2) hybrid nanomaterials which were obtained via in-situ preparation method. Results showed that the carbon foam sample modified by 1.5 wt% GO/SiO2 hybrid nanomaterial with a particle size of 80 nm had an electromagnetic interference shielding effectiveness (EMI SE) up to ∼50 dB in X-band only at a thickness of 10 mm. This phenomenon may be ascribed to stable porous structure and nanoparticles assisting in attenuating the electromagnetic wave transmittance. The result enables their application in lightweight electromagnetic protection devices.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2018.11.040