Dielectric materials incorporated micro iron rod reinforced polyurethane composites for microwave absorbing applications

Now a day, a vast variety of ceramic and polymeric materials is used for the fabrication and designing of the microwave absorbing materials and RADAR absorbing materials (RAMs). The microwave has got two different parts. One is electric part and the other one is the magnetic component. Both of these two components are perpendicular to each other. To absorb the microwave radiation, it is essential to cancel both of these components and the material which will be used as a genuine candidate to absorb the microwave should absorb or nullify the two components. Generally these types of materials can be prepared by incorporating magnetically conducting filler and electrically conducting filler or dielectric materials into a continuous polymer matrix. Here we have prepared the microwave absorbing material with 33.3% filler loading in TPU matrix. The sample thickness was maintained at 2 mm. X ray diffraction studies and Scanning electron microscopy was used to determine the morphology of the as prepared composites. Scattering parameters were measured in X-band region by using a Vector Network Analyzer.