| abstract |
Disclosed is an electromagnetic wave absorbing sheet that is halogen-free, excellent in flame retardancy and electromagnetic wave absorption characteristics, and less corrosive. The present invention contains a soft magnetic powder, a binder resin, a flame retardant and an acid acceptor, and the binder resin is a polyurethane resin formed using an aromatic isocyanate as a curing agent. The flame retardant contains a phosphorus-based flame retardant and a nitrogen-based flame retardant, respectively, and 2 to 10 parts by mass as nitrogen and a nitrogen-based flame retardant with respect to the total mass excluding the soft magnetic powder of the electromagnetic wave absorbing sheet. The electromagnetic wave absorbing sheet 10 which is contained in an amount of 25 to 45 parts by mass and further contains 0.1 to 1.5 parts by mass of hydrotalcite as an acid acceptor, is halogen-free and flame retardant, and has little corrosiveness. [Selection] Figure 1 |