| abstract |
PROBLEM TO BE SOLVED: To match a frequency band of several hundred MHz to several tens GHz having both flexibility and good kneading workability, dispersibility, and moldability while maintaining good return loss characteristics. To provide a radio wave absorber. SOLUTION: The present invention relates to a radio wave absorber in which metal soft magnetic particles having an insulating film formed on the surface are dispersed in an organic polymer, wherein the insulating film contains an alkyl group having 6 to 25 carbon atoms. It is composed of organic compounds. More preferably, the insulating coating is made of a molecule having at one end of the organic compound a functional group selected from a silane-based hydrolyzable group, a carboxyl group, a hydroxyl group, and a phosphate group. |