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Electromagnetic interference shielding effect of stacked aloe vera, silk fabric, and copper slag–embedded epoxy composite at high-frequency bands

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Abstract

This study investigated the behavior of layered aloe vera and silk woven fiber in an epoxy composite filled with copper slag powder at sub (3–4 GHz)- and hyper (8–20 GHz)-frequency bands. The main goal of this work was to explore how the stacking order of fabrics affected the EMI shielding and to create an efficient EMI shielding material for protecting electronic devices from EMI attack. The ASTM standards were used to characterize the composite laminates, which were created utilizing the hand layup method. According to the findings, the fiber with the staking sequence silk/aloe vera/silk/aloe vera demonstrates increased dielectric values of 5%, 14%, 25%, and 66% at sub- and hyper-frequency bands. The composite designation RA2 has a higher dielectric constant than the other composite designations, which are respectively 5.6, 3.1, 1.80, and 0.70. The use of silk fiber further improves the EMI shielding qualities. At sub- and hyper-frequency bands, the composite designation RA2 records up to 6.4, 15.4, 34.1, and 48.3dB. It should be emphasized that the composites also have better mechanical properties. The material RA2 exhibited the highest mechanical qualities, including tensile strength, flexural strength, Izod impact, and hardness of up to 164 MPa, 216 MPa, 6.22 J, and 91 shore-D. These composite materials, which have good mechanical, dielectric, and shielding capabilities, could be used in the satellite, aerospace, defense, industrial, instrumentation and electronic industries.

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Authors and Affiliations

  1. Department of Instrument Technology, College of Engineering, Andhra University, Visakhapatnam, 530003, India

    Bonige Ramesh Babu & A. Bhujanga Rao

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  1. Bonige Ramesh Babu
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  2. A. Bhujanga Rao
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Ramesh B: Research, drafting, and proofing

Bhujanga Rao: Conceptualization

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Correspondence to A. Bhujanga Rao.

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Ramesh Babu, B., Rao, A.B. Electromagnetic interference shielding effect of stacked aloe vera, silk fabric, and copper slag–embedded epoxy composite at high-frequency bands. Biomass Conv. Bioref. (2023). https://doi.org/10.1007/s13399-023-03852-3

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