In this study, for realizing a paintable millimeter-wave absorber is aimed. The properties of epoxy resin, that has a good durability for outside use, including titanium dioxide and carbon particles are studied in 50-110GHz. As this result, a good wave absorber that has the peak absorption over 25dB in a required frequency between 50GHz to 110GHz with changing thickness and the frequency band width over 8GHz for absorption over 20dB can be realized to include 32phr of titanium dioxide and lphr of carbon particles. The complex permittivity of this material changes in almost parallel to no reflection curve as frequency change. Therefore, it is explained that the frequency for the peak absorption can be controlled to change the thickness of absorber without changing contents of titanium dioxide or carbon particles.
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