Nowadays, many types of materials are elaborated for microwave absorption applications.\nCarbon-based nanoparticles belong to these types of materials. Among these, graphene presents\nsome distinctive features for electromagnetic radiation absorption and thus microwave isolation\napplications. In this paper, the dielectric characteristics and microwave absorption properties of\nepoxy resin loaded with graphene particles are presented from 2 GHz to 18 GHz. The influence of\nvarious parameters such as particle size (3 Ã?¼m, 6ââ?¬â??8 Ã?¼m, and 15 Ã?¼m) and weight ratio (from 5% to 25%)\nare presented, studied, and discussed. The sample loaded with the smallest graphene size (3 Ã?¼m)\nand the highest weight ratio (25%) exhibits high loss tangent (tanÃ?´ = 0.36) and a middle dielectric\nconstant Ã?µ\n = 12ââ?¬â??14 in the 8ââ?¬â??10 GHz frequency range. As expected, this sample also provides the\nhighest absorption level: from 5 dB/cm at 4 GHz to 16 dB/cm at 18 GHz.
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