Electromagnetic interference shielding effectiveness of hybrid multifunctional Fe3O4/carbon nanofiber composite

Bayat, Masoumeh; He, Yunhui; Ko, Frank; Michelson, David G.; Mei, Ang

doi:10.1016/j.polymer.2013.12.042

Cited by 169 publications

(100 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consequently, there is a growing interest in the exploration of high-performance EMI shielding materials with high shielding effectiveness (SE) in the gigahertz or terahertz frequency range. [1][2][3][4][5][6][7] Metals have been traditionally utilized for EMI shielding applications due to their high electrical conductivity. 8,9 However, the wide application of metals as EMI shielding materials is limited by their heavy weight, low mechanical strength and poor corrosion resistance.…”

mentioning

confidence: 99%

“…7,16,17 Carbon materials, especially flexible graphene films with micro-sized thickness, have also been demonstrated to exhibit exceptionally high EMI SE as well as in-plane thermal conductivity. [18][19][20] However, the major restrictions for the conducting polymer composites and flexible graphene are the inferior temperature stability and mechanical properties, respectively.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Lightweight graphene nanoplatelet/boron carbide composite with high EMI shielding effectiveness

et al. 2016

View full text Add to dashboard Cite

Lightweight graphene nanoplatelet (GNP)/boron carbide (B4C) composites were prepared and the effect of GNPs loading on the electromagnetic interference (EMI) shielding effectiveness (SE) has been evaluated in the X-band frequency range. Results have shown that the EMI SE of GNP/B4C composite increases with increasing the GNPs loading. An EMI SE as high as 37 ∼ 39 dB has been achieved in composite with 5 vol% GNPs. The high EMI SE is mainly attributed to the high electrical conductivity, high dielectric loss as well as multiple reflections by aligned GNPs inside the composite. The GNP/B4C composite is demonstrated to be promising candidate of high-temperature microwave EMI shielding material.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Lightweight graphene nanoplatelet/boron carbide composite with high EMI shielding effectiveness

et al. 2016

View full text Add to dashboard Cite

show abstract

“…In this study, Fe 3 O 4 magnetic material was synthesized during in-situ polymerization of polyaniline to enhance the absorption property of the composites which also has insulating characteristic for eddy currents (due to a drop in the complex permeability (µ˝) in the gigahertz range). Many researchers [15,16] have already reported high microwave absorption property of Fe 3 O 4 containing polymer composites. Foaming and creating of porosity in composite are undoubtedly an effective way to make the shielding materials lightweight with great microwave absorption ability for various scientific and industrial applications [17 ].…”

Section: Introductionmentioning

confidence: 99%

NaCl leached sustainable porous flexible Fe3O4 decorated RGO-polyaniline/PVDF composite for durable application against electromagnetic pollution

Bera¹,

Paria²,

Karan³

et al. 2017

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract.To avoid the interference of electromagnetic radiation from other devices, an electronic device needs to be fabricated with flexible and light weight electromagnetic interference (EMI) shielding materials with high efficiency. According, highly flexible porous poly(vinylidene fluoride) (PVDF)/PFR (Fe 3 O 4 decorated polyaniline/RGO composite) composite was prepared through solution blending of PVDF with pre-synthesized PFR conductive composite that involves in-situ oxidative polymerization of aniline in the presence of reduced graphene oxide (RGO) using FeCl 3 as oxidant. The porous morphology of the composite was created by leaching out of mixed NaCl from the composite. Polyaniline and RGO were mutually decorated by chemically in-situ synthesized ferrosoferric oxide (Fe 3 O 4 ) using the Fe source of FeCl 3 . A homogeneous dispersion of PFR in insulated PVDF matrix resulted in a highly electrical conductive composite (PVDF-PFR) material through formation of three dimensional continuous conductive networks of polyaniline-RGO in the matrix phase. The composite shows an outstanding EMI shielding effectiveness (EMI SE) property due to the porous structure and the presence of conductive network and ferromagnetic Fe 3 O 4 nanoparticles. The PVDF-PFR composite (0.5 mm thickness) depicts a great permittivity and permeability value and achieve high EMI SE value (≈-28.18 dB) and conductivity value of ≈1.10·10 -1 S·cm -1 at very low loading (5 wt%) of RGO.

show abstract

“…Esto es causado por los efectos de corrientes inducidas a través de los campos eléctricos y magnéticos emanados por la amplia gama de circuitos eléctricos. La interferencia electromagnética (EMI) se produce cuando los dispositivos electrónicos están sujetos a la radiación electromagnética de fuentes no deseadas en el mismo rango de frecuencias en los cuales funcionan [1]. Entre las principales problemáticas que pueden causar la EMI se encuentran la interrupción severa de dispositivos controlados electrónicamente o remotamente, generación de imágenes falsas (especialmente en radares náuticos y aéreos), degradación en la eficiencia, fiabilidad, tiempo de vida y seguridad de los equipos eléctricos, perturbación en canales de comunicación, reducción en el rendimiento de procesos automatizados, pérdida de energía, tiempo y recursos.…”

Section: Introductionunclassified

Materiales compuestos de matriz polimérica usados para el blindaje de interferencia electromagnética

Posada

Téllez

Roa-Rojas

et al. 2017

Cien.Ing.Neogranadina

View full text Add to dashboard Cite

<p>Este trabajo tiene como propósito revisar el estado del arte en la síntesis y caracterización de materiales de matriz polimérica reforzados con compuestos a base de carbón o ferritas para su uso como materiales atenuadores de interferencia electromagnética (EMI). Recientemente, este tipo de materiales han sido objeto de investigación debido a sus potenciales aplicaciones tecnológicas, economía y de ser además ambientalmente amigables, puesto que polímeros o cauchos reciclados se pueden utilizar para su fabricación. Estos compuestos pueden ser empleados en la producción de blindajes electromagnéticos, transductores, entrega focalizada de medicamentos, marcación de órganos, hipertermia magnética, etc. Para la fabricación de este tipo de materiales compuestos se usan refuerzos particulados, fibras o láminas y como matrices polímeros termoplásticos o termoestables, cauchos sintéticos o naturales. El método de producción de los compuestos (mezcla fundida, métodos químicos, etc.) influye en las propiedades eléctricas, magnéticas y electromagnéticas del material obtenido, debido a la relación de aspecto de los refuerzos: compuestos con elevada relación de aspecto de sus refuerzos tendrán mejores propiedades magnéticas, eléctricas y desempeño frente a la interferencia electromagnética. El blindaje electromagnético de estos materiales se cuantifica a través de la efectividad del blindaje (SE) o en otros casos a través de la pérdida reflectiva (RL). Una efectividad de blindaje de 30 dB corresponde a 99,9% de atenuación de la radiación electromagnética incidente. En todos los trabajos se comprueba que las propiedades del compuesto dependen de la cantidad y del tipo de refuerzo adicionado a la matriz.</p>

show abstract

Electromagnetic interference shielding effectiveness of hybrid multifunctional Fe3O4/carbon nanofiber composite

Cited by 169 publications

References 58 publications

Lightweight graphene nanoplatelet/boron carbide composite with high EMI shielding effectiveness

Lightweight graphene nanoplatelet/boron carbide composite with high EMI shielding effectiveness

NaCl leached sustainable porous flexible Fe3O4 decorated RGO-polyaniline/PVDF composite for durable application against electromagnetic pollution

Materiales compuestos de matriz polimérica usados para el blindaje de interferencia electromagnética

Contact Info

Product

Resources

About