| abstract |
[PROBLEMS] To have high radio wave absorptivity regardless of the incident direction of radio waves, excellent handling properties, offices, stores, The present invention provides an electromagnetic wave absorber that can be manufactured at a manufacturing cost that can be generally used as a distribution warehouse, public building, general house, and condominium as a general building material. SOLUTION: A resistive film layer containing 0.4 to 3% by mass of a conductive fiber having an average fiber length of 2 to 11 mm, a spacer, and a reflector layer are laminated, and the maximum amount of radio wave absorption with respect to normal incidence is obtained. In the frequency shown, the maximum radio wave absorption amount and the radio wave absorption amount in the measurement direction orthogonal to the measurement direction indicating the maximum radio wave absorption amount are both 10 dB or more. [Selection] Figure 1 |