Microwave properties of composite with high content of carbonyl iron microparticles of different grades

The results of experiments on obtaining a structural radio material promising for protecting electronic equipment with an increased (more than 80 mass%) content of carbonyl iron micropowders of various grades in a silicone compound are presented. The measured values of complex magnetic permeability in the frequency range of 0.1–6 GHz significantly exceed the known values with a lower content of micropowders. The highest absorption coefficients are observed in the created composite with a content of 88.9 mass% of grade P10 micropowder.