Comparative studies of radio transparency and dielectric characteristics of polymer composites
YERMAKHANOVA A. KENZHEGULOV A. BAISERIKOV B. MEIIRBEKOV M. BOGUSPAYEV N.
2024Chulalognkorn University
Journal of Metals, Materials and Minerals
2024#34Issue 31 - 11 pp.
Aramid-epoxy composites and glass fiber reinforced plastics are widely used in the manufacturing of the fairing design for modern aerospace vehicles due to their excellent mechanical properties combined with radio transparency in wave transfer. In this paper, aramid-epoxy composite and fiberglass were fabricated by the vacuum infusion method for a comparative study on radio transparency and dielectric characteristics. The radio transparency of the studied materials was evaluated by free-space measurements in the frequency range of 1 GHz to 8.5 GHz. According to the radio transparency results, the aramid-epoxy composite undergoes less electromagnetic wave loss than glass fiber reinforced plastic. Modifying the epoxy resin with tricresyl phosphate in aramid-epoxy resin leads to an increase in mechanical properties with a slight decrease in transmittance and a non-significant increase in dielectric characteristics. The dielectric characteristics results have demonstrated low values (ε = 2.87 and tan δ = 0.037) for aramid composites compared to fiberglass.
Aramid-epoxy composite , Dielectric permittivity , Fibreglass , Radio transparency , Tangent angle
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National Center for Space Study and Technology JSC, Almaty city, Kazakhstan
Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty city, Kazakhstan
Satbayev University, Almaty city, Kazakhstan
Limited Liability Partnership “Almaty Institute of Technology”, Almaty city, Kazakhstan
National Center for Space Study and Technology JSC
Satbayev University
Satbayev University
Limited Liability Partnership “Almaty Institute of Technology”
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