| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic wave absorption film having high absorption capacity for electromagnetic noise from several hundreds MHz to several GHz, and suitable for a portable information terminal or an electronic apparatus.SOLUTION: An electromagnetic wave absorption film includes an electromagnetic wave absorption layer containing graphene particles and binder resin formed by repetitively performing a step for coating one side of a plastic film with an organic solvent dispersion liquid containing 1-10 mass% of graphene particles and 0.05-5 mass% of binder resin, and then drying the plastic film. The electromagnetic wave absorption layer has a thickness of 2-15 g/m(represented by the weight of graphene particles per 1 m), mass ratio of the binder resin and the graphene particles is 0.05-1 in the electromagnetic wave absorption layer, and the total area factor of areas where the graphene particles do not exist is 5% or less in the electromagnetic wave absorption layer. |
