The influence of Fe3O4@GNP hybrids on enhancing the EMI shielding effectiveness of epoxy composites in the X-band

Bhaskaran, Krithika; Bheema, Rajesh Kumar; Etika, Krishna C.

doi:10.1016/j.synthmet.2020.116374

Cited by 39 publications

(18 citation statements)

References 47 publications

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“…The composite containing 12 wt % CuNW exhibited the highest SE T value of 6.5 dB over the X-band frequency range. This increase in SE T with increasing CuNW content can be attributed to multiple interfacial polarization losses arising due to the presence of multiple dielectric to conductor interfaces [3,[40][41][42][43].…”

Section: Emi Shielding Effectiveness Of Cunw-epoxy Nanocompositesmentioning

confidence: 98%

Facile One‐Pot Hydrothermal Synthesis of Copper Nanowires and Their Impact on the EMI Shielding Capability of Epoxy Composites

Kumar

Etika

2021

Chem Eng & Technol

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In this work epoxy nanocomposites containing varying content of copper nanowires (CuNW) were produced. The CuNW were synthesized using a facile one-pot hydrothermal synthesis method. The composites were characterized for their electrical conductivity and electromagnetic interference (EMI) shielding effectiveness in the X-band. The electrical conductivity of the epoxy composites was measured, and the composites containing 12 wt % CuNW demonstrated percolated behavior and exhibited a frequency-independent conductivity value of 1.76 10 -6 S m -1 in the range of 25-200 Hz. The 12 wt % CuNW sample demonstrated an EMI shielding effectiveness value of 6.5 dB, which corresponds to 77.1 % attenuation of the incident electromagnetic wave. Furthermore, an absorption-dominated shielding mechanism was observed in these composites.

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Section: Emi Shielding Effectiveness Of Cunw-epoxy Nanocompositesmentioning

confidence: 98%

Facile One‐Pot Hydrothermal Synthesis of Copper Nanowires and Their Impact on the EMI Shielding Capability of Epoxy Composites

Kumar

Etika

2021

Chem Eng & Technol

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“…Moreover, the absorption and total efficiencies were 32 dB and 25 dB respectively, when the Fe 3 O 4 @f-GNPs exhibited shielding efficiency properties with 232 nm Fe 3 O 4 in the X band. Bhaskaran et al [ 86 ] investigated the EMI shielding effectiveness of epoxy nanocomposites containing Fe 3 O 4 nanoparticles coated graphene nanoplatelets, where by using a co-precipitation technique and a solvent-less approach, hybrid nanostructures were synthesized in situ. The results showed the high EMI shielding effectiveness of Fe 3 O 4 @GNP compared to other samples having equivalent loading of GNP and Fe 3 O 4 .…”

Section: Graphene-based Compositesmentioning

confidence: 99%

Graphene and Iron Reinforced Polymer Composite Electromagnetic Shielding Applications: A Review

et al. 2021

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With advancements in the automated industry, electromagnetic inferences (EMI) have been increasing over time, causing major distress among the end-users and affecting electronic appliances. The issue is not new and major work has been done, but unfortunately, the issue has not been fully eliminated. Therefore, this review intends to evaluate the previous carried-out studies on electromagnetic shielding materials with the combination of Graphene@Iron, Graphene@Polymer, Iron@Polymer and Graphene@Iron@Polymer composites in X-band frequency range and above to deal with EMI. VOSviewer was also used to perform the keyword analysis which shows how the studies are interconnected. Based on the carried-out review it was observed that the most preferable materials to deal with EMI are polymer-based composites which showed remarkable results. It is because the polymers are flexible and provide better bonding with other materials. Polydimethylsiloxane (PDMS), polyaniline (PANI), polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF) are effective in the X-band frequency range, and PDMS, epoxy, PVDF and PANI provide good shielding effectiveness above the X-band frequency range. However, still, many new combinations need to be examined as mostly the shielding effectiveness was achieved within the X-band frequency range where much work is required in the higher frequency range.

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“…To overcome these issues, electromagnetic interference (EMI) shielding materials are necessary. Generally, EMI shielding materials require a high electrical conductivity, high-efficiency absorption tunability, corrosion resistance, thermal stability, and light weight [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ].…”

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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The influence of Fe3O4@GNP hybrids on enhancing the EMI shielding effectiveness of epoxy composites in the X-band

Cited by 39 publications

References 47 publications

Facile One‐Pot Hydrothermal Synthesis of Copper Nanowires and Their Impact on the EMI Shielding Capability of Epoxy Composites

Facile One‐Pot Hydrothermal Synthesis of Copper Nanowires and Their Impact on the EMI Shielding Capability of Epoxy Composites

Graphene and Iron Reinforced Polymer Composite Electromagnetic Shielding Applications: A Review

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

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