Investigation of Mechanical and Electromagnetic Interference Shielding Properties of Nickel–CFRP Textile Composites

Tugirumubano, Alexandre; Vijay, S.J.; Go, Sun Ho; Kwac, Lee Ku; Kim, Hong Gun

doi:10.1007/s11665-018-3334-6

Cited by 14 publications

(6 citation statements)

References 14 publications

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“…EM shielding materials are attracting great attention due to their specific function in overcoming EM interference (EMI) problems and are in demand for medical, aerospace, and military applications [2]. Many materials have been explored as EM shielding materials [3][4][5], and among them, EM shielding fabric is an important new kind of material or product for EM shielding because of its softness, breathability, and easy machining [6].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Electromagnetic Shielding Composites Based on Graphene-Nanosheets-Loaded Nonwoven Fabric

2021

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A fabric-like electromagnetic (EM) shielding composite based on nonwoven was fabricated using a coating method with a mixture containing graphene (GE) nanosheets and polyvinylidene fluoride (PVDF) adhesive agent, and then characterized for its mechanical properties, air permeability, EM properties, and morphologies. The GE loading amount and EM shielding effect was improved by applying a double coating process, with, in particular, a 2-sided coating that produced superior air permeability and shielding effectiveness (SE) than 2-layer coating. The coating produced an increased tensile initial modulus and flexural rigidity, whose increase was affected by the coating agent GE content. Increased GE content also resulted in decreased air permeability and increased SE and electrical conductivity. After coating with 25 g/L GE, the composite SE reached 31.2 dB, such that the electric/magnetic field strength of transmitted EM waves were reduced by ~97%. Scanning electron microscope and energy dispersive spectrometry results illustrated that aggregated GE was tightly bonded with the fibers due to the adhesive effect of PVDF and, with the increased coating agent GE content, the fibrous network was gradually filled with GE/PVDF attachments and increasing numbers of fibers were covered. Such an EM shielding material could be referenced for development by industrial or household protective applications.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Electromagnetic Shielding Composites Based on Graphene-Nanosheets-Loaded Nonwoven Fabric

2021

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“…Recently, owing to the rapid development and increasing application of the wireless communication technology, increasingly more electromagnetic radiation emissions have appeared in the environment, thus causing harmful effects on the operation of precision electronic equipment and human health. 1,2 Hence, the development of new electromagnetic shielding materials becomes increasingly necessary. The electromagnetic interference (EMI) shielding efficiency (SE) is related to the use of shielding materials to prevent or attenuate the propagation of electromagnetic energy between the shielded area and external environment.…”

Section: Introductionmentioning

confidence: 99%

Fused Deposition Modeling 3D Printing of Novel Poly(vinyl alcohol)/Graphene Nanocomposite with Enhanced Mechanical and Electromagnetic Interference Shielding Properties

Chen

Wang

et al. 2020

Ind. Eng. Chem. Res.

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Nowadays, there is a considerable demand for printable and functionalized thermoplastic polymer-based materials that are suitable for fused deposition modeling (FDM) three-dimensional (3D) printing. Hence, in this study, poly(vinyl alcohol) (PVA)/graphene nanoplate (GNP) multifunctional nanocomposites were thermally prepared for printing parts with enhanced electromagnetic interference (EMI) shielding capability via FDM. The related microstructure, processing parameters, and properties of the prepared PVA/GNP nanocomposite, as well as the printed parts, were accordingly investigated. The results indicated that ultrasonication realized the homogeneous dispersion of GNP fillers in the PVA matrix. The added glycerol and GNP effectively destroyed the intrinsic hydrogen bonds of PVA through molecular complexation interaction, thus broadening the processing window of PVA and its nanocomposite. Additionally, the incorporation of GNP also facilitated the enhancement in the hydrophobicity of the nanocomposite. The mechanical properties, including Young’s modulus, elongation at break, and ultimate tensile stress of the printed PVA/GNP parts, were optimized when the filling pattern was 0 × 0. Moreover, the EMI shielding efficiency (SE) of the printed PVA/GNP parts with a thickness of 2.43 mm reached 26–32 dB in the frequency range of 8–12.4 GHz, which can completely satisfy the requirements for practical applications. The corresponding EMI SE mechanism of the printed parts was also discussed.

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“…Many research papers describe SE evaluation from different perspectives, i.e., measurement techniques [1,2,3,4,5,6,7], composition of materials [8,9,10,11,12,13,14,15,16,17], influence of washing/drying cycles on values of SE of fabrics [18,19,20], or calculation of SE [4,21,22,23,24,25,26,27,28,29,30,31]. SE measurement is commonly performed by a coaxial transmission line method specified in ASTM 4935-10 [1,2,3,4,6,8,9,10,12,14,17,18] by measuring the insertion loss with a dual transverse electromagnetic (TEM) cell [3,5], or by measurement in a free space, shielding box, or shielding room with receiving and transmitting antennas [7,15,19,20].…”

Section: Introductionmentioning

confidence: 99%

“…SE measurement is commonly performed by a coaxial transmission line method specified in ASTM 4935-10 [1,2,3,4,6,8,9,10,12,14,17,18] by measuring the insertion loss with a dual transverse electromagnetic (TEM) cell [3,5], or by measurement in a free space, shielding box, or shielding room with receiving and transmitting antennas [7,15,19,20]. The papers which focus on measurement techniques of various electrically conductive fabrics usually present basic equations for SE calculation [4,21,22,23,24,25,26,27,28] (SI units are used in all formulas unless otherwise stated) as shown in Equation (1).…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Shielding Effectiveness of Woven Fabrics with High Electrical Conductivity: Complete Derivation and Verification of Analytical Model

Neruda

Vojtěch

2018

Materials

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In this paper, electromagnetic shielding effectiveness of woven fabrics with high electrical conductivity is investigated. Electromagnetic interference-shielding woven-textile composite materials were developed from a highly electrically conductive blend of polyester and the coated yarns of Au on a polyamide base. A complete analytical model of the electromagnetic shielding effectiveness of the materials with apertures is derived in detail, including foil, material with one aperture, and material with multiple apertures (fabrics). The derived analytical model is compared for fabrics with measurement of real samples. The key finding of the research is that the presented analytical model expands the shielding theory and is valid for woven fabrics manufactured from mixed and coated yarns with a value of electrical conductivity equal to and/or higher than σ = 244 S/m and an excellent electromagnetic shielding effectiveness value of 25–50 dB at 0.03–1.5 GHz, which makes it a promising candidate for application in electromagnetic interference (EMI) shielding.

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Investigation of Mechanical and Electromagnetic Interference Shielding Properties of Nickel–CFRP Textile Composites

Cited by 14 publications

References 14 publications

Preparation and Characterization of Electromagnetic Shielding Composites Based on Graphene-Nanosheets-Loaded Nonwoven Fabric

Preparation and Characterization of Electromagnetic Shielding Composites Based on Graphene-Nanosheets-Loaded Nonwoven Fabric

Fused Deposition Modeling 3D Printing of Novel Poly(vinyl alcohol)/Graphene Nanocomposite with Enhanced Mechanical and Electromagnetic Interference Shielding Properties

Electromagnetic Shielding Effectiveness of Woven Fabrics with High Electrical Conductivity: Complete Derivation and Verification of Analytical Model

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