Optimization of carbon fiber loading in PDMS for strong microwave absorption

Gadadasu, C and Bora, PJ and Ramamurthy, PC (2022) Optimization of carbon fiber loading in PDMS for strong microwave absorption. In: 2022 IEEE International Conference on Emerging Electronics, ICEE 2022, 11- 14 Dec 2022, Bangalore, India.

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Abstract

Carbon fibers were reinforced in the poly dimethyl siloxane (PDMS) matrix, and composites of 2.5 wt %, 3 wt %, and 10 wt % concentration were effectively synthesized. The composites' complex relative permittivity values were measured, and microwave absorption properties were calculated for the synthesized PDMS composites. Based on the measured data, a data-driven approach was used to optimize the filler loading for efficient microwave absorption. It was observed that the composite's minimum reflection loss (RLmin) is about -51 dB for 0.3 wt % concentration at 2.9 mm thickness with an effective absorption bandwidth of 4.3 GHz in the Ku-band (12.4-18 GHz).

Item Type:	Conference Paper
Publication:	2022 IEEE International Conference on Emerging Electronics, ICEE 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the IEEE.
Keywords:	carbon fibers; microwave absorption; PDMS; reflection loss
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	28 Jun 2023 08:40
Last Modified:	28 Jun 2023 08:40
URI:	https://eprints.iisc.ac.in/id/eprint/82154

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