The constituent for the wave absorber, vis-a-vis the production mannered null ethylene propylene rubber 100 mass section

摘要

PROBLEM TO BE SOLVED: To provide a composition for absorbing radio wave absorber suitable for absorbing radio waves in the vicinity of 1 GHz and in the higher GHz bands which can reduce the weight and thickness, to provide the radio wave absorber produced by molding that composition, and to provide a manufacturing method of the radio wave absorber.;SOLUTION: The composition for radio wave absorber contains 100-500 mass parts of aluminum powder having an oxide film on the surface, and 50-200 mass parts of carbon black for 100 mass parts of ethylene propylene rubber wherein the mean particle diameter D₅₀ of the aluminum powder is 10-35 μm, and a radio wave absorber is obtained by molding the composition for radio wave absorber into sheet shape.;COPYRIGHT: (C)2009,JPO&INPIT