ELECTRIC-WAVE ABSORBING BOARD, MANUFACTURING METHOD THEREOF, AND ELECTRIC-WAVE ABSORBING FIREPROOF WALL MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a rigid light-weight electric-wave absorbing board. SOLUTION: An electric-wave absorbing board 1 comprises cement, silica material, fabric-reinforced material, and ferrite of 20-80 wt.% in content, and is provided with a continuous hollow 1A opened at two end surfaces 10 in the length direction.