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Agricultural Waste based Biocomposite for Electromagnetic Shielding Application

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Title Agricultural Waste based Biocomposite for Electromagnetic Shielding Application
 
Creator Dash, Akshaya Kumar
Singh, Priyanka P
Nath, Ganeswar
 
Subject Attenuation coefficient
Dielectric loss factor
Electromagnetic interference
Shielding techniques
Tangent loss
 
Description 1217-1223
The enhanced significant use of electromagnetic wave introduces new type of pollution in the environment called
Electromagnetic Interference (EMI). Different shielding techniques though successfully works in the present scenario but
small efficiency of attenuation and absorption capacity of traditional ceramics demands some alternative potential material
for enhanced shielding efficiency, which can be realised from agricultural waste such as rice husk, sugarcane bagasse, etc.
Further, the shielding structure and composition of composite are the current issues which depend on the dielectric
properties of the fabricated materials. In the current work, rice husk, an organic biomaterial rich in carbon, is combined with
epoxy to create a microwave absorber that is flexible, inexpensive, and eco-friendly. The different microwave absorbing
property such as complex dielectric, tangent loss, attenuation constant and Reflection Loss (RL) of −14.5 dB at frequency 10
GHz are found to be possessed by the synthesized composite of thickness 3 mm which is determined from composite’s
dielectric values. The attenuation coefficient supports the measured values of RL, highlighting the significance of the
suggested composite material with a power attenuation efficiency of around 87% for legitimate microwave absorption
applications. The presence of good percentage of elemental combination like carbon, oxygen and silicon makes it possible
for increasing the percentage of activated carbon which is not present in any other synthetic component for the same
purpose. Further use of carbon rich waste material is an advantageous impetus for material industries to enhance the
percentage of activated carbon for shielding purpose.
 
Date 2022-11-24T05:48:01Z
2022-11-24T05:48:01Z
2022-11
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/60914
https://doi.org/10.56042/jsir.v81i11.61458
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source JSIR Vol.81(11) [Nov 2022]