Next Article in Journal
Improvement in Predicting the Post-Cracking Tensile Behavior of Ultra-High Performance Cementitious Composites Based on Fiber Orientation Distribution
Next Article in Special Issue
Investigation of Electric Field–Induced Structural Changes at Fe-Doped SrTiO3 Anode Interfaces by Second Harmonic Generation
Previous Article in Journal
Behavior of Human Bone Marrow-Derived Mesenchymal Stem Cells on Various Titanium-Based Coatings
Open AccessArticle

Dielectric Characteristics and Microwave Absorption of Graphene Composite Materials

1
DCNS Research Technocampus Océan, 5 rue de l’Halbrane, 44340 Bouguenais, France
2
Institut d’Electronique et de Télécommunications de Rennes (IETR, UMR-6164)/Institut Universitaire de Technologie de Saint-Brieuc/Université de Rennes 1, 18 rue Henri Wallon, 22004 Saint-Brieuc & 263 avenue du Général Leclerc, 35042 Rennes, France
*
Author to whom correspondence should be addressed.
Academic Editors: Juergen Stampfl and Arne Berner
Materials 2016, 9(10), 825; https://doi.org/10.3390/ma9100825
Received: 12 September 2016 / Revised: 27 September 2016 / Accepted: 2 October 2016 / Published: 13 October 2016
(This article belongs to the Special Issue Microwave Absorbing and Energy Storage Materials)
Nowadays, many types of materials are elaborated for microwave absorption applications. Carbon-based nanoparticles belong to these types of materials. Among these, graphene presents some distinctive features for electromagnetic radiation absorption and thus microwave isolation applications. In this paper, the dielectric characteristics and microwave absorption properties of epoxy resin loaded with graphene particles are presented from 2 GHz to 18 GHz. The influence of various parameters such as particle size (3 µm, 6–8 µm, and 15 µm) and weight ratio (from 5% to 25%) are presented, studied, and discussed. The sample loaded with the smallest graphene size (3 µm) and the highest weight ratio (25%) exhibits high loss tangent (tanδ = 0.36) and a middle dielectric constant ε′ = 12–14 in the 8–10 GHz frequency range. As expected, this sample also provides the highest absorption level: from 5 dB/cm at 4 GHz to 16 dB/cm at 18 GHz. View Full-Text
Keywords: multifunctional composite materials; graphene; physical properties; analytical modeling; electromagnetic absorption; complex dielectric constants multifunctional composite materials; graphene; physical properties; analytical modeling; electromagnetic absorption; complex dielectric constants
Show Figures

Figure 1

MDPI and ACS Style

Rubrice, K.; Castel, X.; Himdi, M.; Parneix, P. Dielectric Characteristics and Microwave Absorption of Graphene Composite Materials. Materials 2016, 9, 825.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop