| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a soft electromagnetic wave absorber that is excellent in electromagnetic wave absorbability, thermal conductivity, flame retardant, and adhesive strength, is reduced in temperature dependency, has high-resistance and high-insulation characteristics, and is free from sticking limitation by making the high-density packing of a magnetic-loss material possible. <P>SOLUTION: The electromagnetic wave absorber contains (a) 60-90 wt% soft ferrite surface-treated with a nonfunctional group-based silane compound, preferably, Ni-Zn-based soft ferrite having a particle diameter distribution D<SB>50</SB>of 1-30 μm, (b) 3-25 wt% magnetite, preferably, fine magnetite particles having particle diameter distribution D<SB>50</SB>of 0.1-0.4 μm and an octahedron shape, and (c) 7-15 wt% silicone, preferably, a silicone gel. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
