Microwave shielding and absorptive properties of multilayer composite structures with nanocarbon/magnetic fillers

Key Points

• This research aims to evaluate the microwave shielding and absorption properties of epoxy composites with various fillers.
• Investigated different fillers including thermally expanded graphite, carbon nanotubes, and iron particles in epoxy composites.
• Analyzed electromagnetic radiation shielding properties within a frequency range of 26–60 GHz.
• Compared the performance of multilayer composite structures with varying nanocarbon distributions.
• The composite with porous TEG-Ni filler showed the highest electromagnetic radiation shielding parameters.
• Achieved significant microwave absorption capability within composite structures, with absorption rates ranging from A = 0.87 to 0.97.
• Gradient distribution of nanocarbon in layers improved impedance matching and enhanced absorption.