Expanded graphite/Novolac phenolic resin composite as single layer electromagnetic wave absorber for x-band applications

Jyoti Prasad Gogoi; Nidhi Saxena Bhattacharyya

doi:10.1117/12.2009485

28 January 2013 Expanded graphite/Novolac phenolic resin composite as single layer electromagnetic wave absorber for x-band applications

Jyoti Prasad Gogoi, Nidhi Saxena Bhattacharyya

Author Affiliations +

Proceedings Volume 8760, International Conference on Communication and Electronics System Design; 876005 (2013) https://doi.org/10.1117/12.2009485
Event: International Conference on Communication and Electronics System Design, 2013, Jaipur, India

Abstract

Expanded graphite/novolac phenolic resin (EG/NPR) composites are developed as dielectric absorbers with 4mm thickness and its microwave absorption ability studied in the frequency range 8.4 to 12.4 GHz. A high reflection loss ~ -43 dB is observed at 12.4 GHz for 5 wt. % EG/NPR composites. With the increase in EG concentration in the composite the reflection loss decreases and the absorption peak shifts towards lower frequency. 7 wt. %, 8 wt. % and 10 wt. % composites shows a 10dB absorption bandwidth of order of 1GHz. Light weight EG/NPR composite shows potential to be used as cost-effective broadband microwave absorber over the X-band.

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Jyoti Prasad Gogoi and Nidhi Saxena Bhattacharyya "Expanded graphite/Novolac phenolic resin composite as single layer electromagnetic wave absorber for x-band applications", Proc. SPIE 8760, International Conference on Communication and Electronics System Design, 876005 (28 January 2013); https://doi.org/10.1117/12.2009485

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