Multiwalled carbon nanotubes and zinc oxide using a high energy milling method for radar-absorbent

Abstract Radar is a technology that always used by the military to detect an object because it can determine shape, size, position, distance, and speed of object. This enables national defence system have anti-radar protect equipment or other important objects. One way be applied using radar-absorbing material coat surface A good made combination dielectric materials with magnetic materials. MWCNT/ZnO composites were produced high energy milling method. The various times (0, 1, 3 5 h) HEM on microwave absorbing properties has effect, which was studied. experimental results show optimum absorption ability reached when process carried out for h thickness 2.0 mm. return loss −26.4 dB at frequency 11.2 GHz bandwidth correlative below −10 greater than 1.5 GHz. When comparing without treatment, treatment also increase properties.