Study of electromagnetic shielding effectiveness of metal oxide polymer composite in their bulk and layered forms

In this paper, we present the studies on electromagnetic interference (EMI) shielding effectiveness (SE) of K 2 CrO 4 -PMMA composites developed by two different methods: one in bulk form of thickness 1.2 mm and another by stacking twelve layers of thin films each of thickness 100 μm. The EMI SE of...

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Bibliographic Details
Published in:Environmental science and pollution research international 2021, Vol.28 (4), p.3880-3887
Main Authors: Gupta, Ankit Kumar, Bafna, Minal, Srivastava, Subodh, Khanna, Rajendra Kumar, Vijay, Yogesh Kumar
Format: Article
Language:English
Subjects:
absorption
Aluminum
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Composite materials
Earth and Environmental Science
Ecotoxicology
Electromagnetic Fields
electromagnetic interference
Electromagnetic shielding
Environment
Environmental Chemistry
Environmental Health
Environmental science
Frequency ranges
Investigations
Metal oxides
Nanotubes, Carbon
Network analysers
Oxides
Polymer matrix composites
Polymers
Polymethylmethacrylate
Potassium
Potassium chromate
Potassium chromates
Recent Trends in Environment and Sustainable Development
Superhigh frequencies
Thick films
Thickness
Thin films
Waste Water Technology
Water Management
Water Pollution Control
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Summary:In this paper, we present the studies on electromagnetic interference (EMI) shielding effectiveness (SE) of K 2 CrO 4 -PMMA composites developed by two different methods: one in bulk form of thickness 1.2 mm and another by stacking twelve layers of thin films each of thickness 100 μm. The EMI SE of stacked twelve layers of 1.2-mm-thick composite films has been achieved until 23.2 dB in the frequency range 8.0–12.0 GHz. This is remarkably higher than the 17 dB achieved for the bulk composites of 1.2 mm thickness. The characteristic EMI SE graphs obtained using Agilent E82B Vector Network Analyzer in the X band frequency range have been depicted, and the shielding mechanism in these composites has been analyzed. It is found that the SE in this frequency range is dominated by absorption. The study suggests these composites to be a potentially promising material for EMI shielding purpose.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-020-09322-x