Effect of Temperature and Frequency on Microwave Shielding Behaviour of Functionalized Kenaf Fibre-Reinforced MWCNTs/Iron(III) Oxide Modified Epoxy Hybrid Composite

Merizgui, Tahar; Hadjadj, Abdechafik; Kious, Mecheri; Prakash, Ved

doi:10.1007/s42341-020-00179-y

Cited by 48 publications

(9 citation statements)

References 20 publications

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“…For this experimental work, polymer matrix hybrid composites are prepared through a compression molding process with predefined combinations (Table 2) of synthesizing parameters as per [ 29 ]. Compression molding process parameters are selected as a percentage of reinforcement, molding temperature, molding pressure, and curing time.…”

Section: Methodsmentioning

confidence: 99%

Influence of Compression Molding Process Parameters in Mechanical and Tribological Behavior of Hybrid Polymer Matrix Composites

et al. 2021

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In recent days, natural fibers are extremely influential in numerous applications such as automobile body building, boat construction, civil structure, and packing goods. Intensification of the properties of natural fibers is achieved by blending different natural fibers with resin in a proper mixing ratio. This investigation aims to synthesize a hybrid polymer matrix composite with the use of natural fibers of flax and loops of hemp in the epoxy matrix. The synthesized composites were characterized in terms of tribological and mechanical properties. The Taguchi L16 orthogonal array is employed in the preparation of composite samples as well as analysis and optimization of the synthesis parameters. The optimization of compression molding process parameters has enhanced the results of this investigation. The parameters chosen are percentage of reinforcement (20%, 30%, 40%, and 50%), molding temperature (150 °C, 160 °C, 170 °C, and 180 °C), molding pressure (1 MPa, 2 MPa, 3 MPa, and 4 MPa), and curing time (20 min, 25 min, 30 min, and 35 min). From the analysis, it was observed that the percentage of reinforcement is contributing more to altering the fatigue strength, and the curing time is influenced in the impact and wear analysis.

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Section: Methodsmentioning

confidence: 99%

Influence of Compression Molding Process Parameters in Mechanical and Tribological Behavior of Hybrid Polymer Matrix Composites

et al. 2021

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“…A vector network analyzer was applied to measure the microwave shielding effectiveness SE in the range X and Ku band frequencies. [ 26 ] The scattering parameters identical to transmission (S12 and S21) and reflection (S11 and S22) were applied to estimate the transmission (T), reflection (R), and absorption (A) coefficients. The SE of reflection (SER) and absorption (SEA), and total SET mechanisms could be estimated as follows.…”

Section: Characterizationsmentioning

confidence: 99%

EMI shielding of cobalt, red onion husk biochar and carbon short fiber‐PVA composite on X and Ku band frequencies

Devi¹,

Nagabhooshanam²,

Chokkalingam

et al. 2022

Polymer Composites

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This present study discusses the effects of doped novel cobalt-onion peel-based water soluble Poly vinyl alcohol (PVA) composite for its electromagnetic interference shielding (EMI) effectiveness in high-frequency bands such as X and Ku region. The primary aim of this study was to prepare a flexible electromagnetic shielding material for protecting electronic gadgets from the EMI effect. The biochar particles were prepared from red onion peel and mixed with cobalt/chopped carbon fiber (CCF) to form a compound structure. According to the results, the biochar and CCF addition improved the relative permittivity up to 9.6. Similarly, the hysteresis analysis showed a broad "S" curve for 2 vol % cobalt-added PVA composite. Moreover the doped composites are better in mechanical properties and the highest tensile strength of 79 MPa with Shore-D hardness of 37 was noted for PV3 composite designation. Finally, the highest wave shielding of À44.37 dB and À 49.62 dB for X and Ku band were observed for composite designation PVA4. This EMI shielding effectiveness improved composites could be used as shielding material for modern industrial, defense, and medical applications.

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“…This uniform distribution in polymer composite is the reason due their of functional group response (NH 2 ) with matrix. [23,24] Figure 3(E) shows the EDAX report of silane surface modified EGNiAg 2 sample. The presence of nickel, nitrogen, and oxygen assure the existence of NH 2 functional group on surface modified reinforcement.…”

Section: Morphologymentioning

confidence: 99%

Electromagnetic shielding behavior of epoxy multi‐hybrid composites comprises of E‐glass fiber, Ag nanoparticle, and Ni nanosheet: A novel approach

et al. 2021

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High performance epoxy based EMI shielding hybrid composites were prepared and characterized for their mechanical, magnetic, and Electromagnetic Interference (EMI) shielding behavior. The aim of this research was to enhance the electromagnetic interference shielding effect of a nanocomposite at high frequency with good mechanical strength. The shielding effectiveness of the epoxy composite was improved via the addition of E-glass/silver nanoparticle and nickel nanosheets. The reinforcements were silane surface modified to enhance the adhesion and dispersion of reinforcements with matrix. The composites were prepared via hand layup process using glass fiber, silver nanoparticle, and Ni nanosheets followed by room temperature curing. The characterization of hybrid composites was done in accordance with ASTM standards. The results revealed that the Ag and Ni along with E-glass fiber improved conductivity, permittivity, and permeability of epoxy composite. Similarly, the mechanical behavior of nanocomposite was found to be increased for tensile, flexural, and Izod impact toughness. Moreover, a maximum wave attenuation of -48 dB was observed for 3-mm thick composite shielding material in "J" band frequency. These mechanically sound high EMI shielding lightweight polymer composites could be used as potential material for aerospace, defense, tele-communication, and satellite data transfer applications. Besides the reduction of EMI effect between electronic gadgets could improves the utility and life span of electromagnetic devices and gadgets in several engineering applications. K E Y W O R D SEMI shielding, mechanical properties, Ni nanosheet, polymer matrix composite, silver NPs | INTRODUCTIONElectromagnetic (EM) shielding effectiveness (SE) is one of the helpful solution to minimize EMI problems and to warrant the safety of the electronic systems. [1,2] Metals are utilized in EM shielding implementations because they are conductive and liable to reflect forthcoming EM waves. [3,4] While, considerable issues appear concerning

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Effect of Temperature and Frequency on Microwave Shielding Behaviour of Functionalized Kenaf Fibre-Reinforced MWCNTs/Iron(III) Oxide Modified Epoxy Hybrid Composite

Cited by 48 publications

References 20 publications

Influence of Compression Molding Process Parameters in Mechanical and Tribological Behavior of Hybrid Polymer Matrix Composites

Influence of Compression Molding Process Parameters in Mechanical and Tribological Behavior of Hybrid Polymer Matrix Composites

EMI shielding of cobalt, red onion husk biochar and carbon short fiber‐PVA composite on X and Ku band frequencies

Electromagnetic shielding behavior of epoxy multi‐hybrid composites comprises of E‐glass fiber, Ag nanoparticle, and Ni nanosheet: A novel approach

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