Effect of temperature on the Electromagnetic Characteristic Behavior of Copper

Merizgui, Tahar; Hadjadj, Abdechafik; Gaoui, Bachir; Kious, Mecheri

doi:10.1109/icass.2018.8652063

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…Composite absorbers material is one of the major challenges in many applications of shielding materials which are often microscopic due to its light weight [3][4]. The absorption mechanism (A), reflection mechanism (R), and electromagnetic interference EMI shielding effectiveness SE of the epoxy matrix-kenaf fibre-(MWCNT/Fe2O3) particle-reinforced conducting composite sheets is evaluated in this paper by using ε, µ, and σ for near field region at several temperature [5][6]. The morphology of the obtained our prepared shields was investigated by scanning electron microscopy (SEM) images.…”

Section: Introductionmentioning

confidence: 99%

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Merizgui¹,

Hadjadj²,

Kious³

et al. 2019

RCMA

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In this paper, we present a comparison study between theoretical and experimental results to improve the performance of materials such as electrical proprieties (permeability, permittivity, and conductivity) and shielding efficiency at high temperature by using a different designation of hybrid composite. The main aim of this research study is to prepare a high stable microwave shielding hybrid epoxy composite with a modified surface MWCNTs and Iron (III) oxide nano particles addition in epoxy resin matrix/Kenaf fibre. The morphology of the obtained shields was investigated by scanning electron microscopy. Thus, additions of MWCNTs and iron (III) oxide particles increase the shielding effectiveness with a modified surface on these reinforcements by increasing the electrical behavior against the external radiation at high temperature of epoxy matrix with incremental of temperature.

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Section: Introductionmentioning

confidence: 99%

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Merizgui¹,

Hadjadj²,

Kious³

et al. 2019

RCMA

Self Cite

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“…It is observed that when volume fraction of particle increases the conductivity get increases. This increment is because of improved conductivity via inclusion of conductive particles [15]. Both volume fraction and conductivity are directly proportional based on the curve in Figure 3(a).…”

Section: Testing Of Compositesmentioning

confidence: 95%

Impact of Temperature Variation on the Electromagnetic Shielding Behavior of Multilayer Shield for EMC Applications

Merizgui¹,

Hadjadj²,

Kious³

et al. 2019

RCMA

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This paper attempts to disclose how temperature variation affects the electromagnetic shielding of a multilayer composite made of copper (Cu) fibers surrounded by silicon (Si). The model of the composite was fabricated by physical vapor deposition method, and tested with the temperature rising from room temperature (RT), 50º C, 85º C to 110º C. Under these temperatures, several electromagnetic shielding parameters of the composite were measured in various operating microwave frequencies (E, F, I and J bands). Among them, dielectric permittivity was acquired by LCR tester, magnetic permeability was measured by vibrating sample magnetometer (VSM), and the electromagnetic (EM) wave attenuation was recorded by typical microwave test bench. The results show that the composite had an EMI shielding of 20dB at 85º and 100dB at the RT; the reflection loss of the composite (volume fraction: 0.32) was also 100dB at the RT. Thus, the temperature rise suppresses the reflection loss; the composite has better electromagnetic shielding effect at the RT than at elevated temperatures; the volume faction enhances the wave attenuation of the composite. The results provide a good reference for the design of stable electromagnetic shielding materials at elevated temperatures.

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“…But some researchers have identified that the addition of magnetic reinforcements along with conducting fillers would fetch improvement in EM shielding by inducing both reflection and absorption scattering parameters (S 11 and S 21 ). [ 5,6 ] John et al [ 7 ] experimented on the role of Fe 3 O 4 particle addition along with TiO 2 conducting particle. They concluded that the addition of magnetic particle fetched further improvement in EM shielding effect even though the composite contains conducting particle.…”

Section: Introductionmentioning

confidence: 99%

“…They concluded that the addition of magnetic particle fetched further improvement in EM shielding effect even though the composite contains conducting particle. Similarly, Tahir et al [ 8 ] studied the effect of adding magnetic fillers along with Cu fillers in EMI shielding. The authors concluded that the addition of magnetic fillers of significant volume percentage increased the EMI shielding at a higher rate than composite made of only copper particle.…”

Section: Introductionmentioning

confidence: 99%

Role of cobalt nanowire and graphene nanoplatelet on microwave shielding behavior of natural rubber composite in high frequency bands

Jeevakumari¹,

Indhumathi

Prakash³

2020

Polymer Composites

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Highly flexible microwave shielding E (2-3 GHz), F (3-4 GHz), I (8-12 GHz) and J (12-16 GHz) natural rubber composites for antenna application were prepared and characterized. The main objective of this current research is to develop a flexible microwave shielding material to reduce electromagnetic inference (EMI) effect. Graphene nanoplatelet and cobalt nanowire was selected for improving electric and magnetic losses. The flexible rubber composite was prepared using two-roll mill process and cured at an temperature of 150 ο C. The mechanical, dielectric, magnetic, and microwave shielding properties were tested in accordance to ASTM standards. Highest tensile strength of 30 MPa was obtained for composite made of 6phr (parts per hundred rubber) of graphene nanoplatelet and cobalt nanowire (NR 4). Dielectric results show that the composite consists of graphene nanoplatelet and cobalt nanowire of 6phr gives highest dielectric constant of 7.2. The hysteresis analysis shows a highest magnetization of 940 emu, remanence of 610 emu and coercivity of 2750G for NR 4 composite. Similarly, the maximum microwave attenuation of 38.1 dB at 18 GHz (J band) was achieved in NR 4 composite. This high microwave shielding flexible composite material could be used as EMI filter and electromagnetic absorber in antennae applications where EMI need to be lesser.

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Effect of temperature on the Electromagnetic Characteristic Behavior of Copper

Cited by 7 publications

References 8 publications

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Impact of Temperature Variation on the Electromagnetic Shielding Behavior of Multilayer Shield for EMC Applications

Role of cobalt nanowire and graphene nanoplatelet on microwave shielding behavior of natural rubber composite in high frequency bands

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