| 摘要 |
PURPOSE: An electromagnetic wave absorber composition is provided, to lower the specific absorption rate (SAR) for allow the electromagnetic wave from an electronic device to be absorbed efficiently. CONSTITUTION: The electromagnetic wave absorber composition comprises iron oxide containing 1-10 % a cobalt salt (Co-γ-Fe2O3), and extruded together with a plastic material. Optionally the composition comprises further 0-35 % of Fe3O4 and/or 1-10 % of conductive carbon black. Preferably the composition comprises 55-99 wt% of Co-γ-Fe2O3; 0-35 wt% of Fe3O4; and 1-10 wt% of conductive carbon black. Preferably the plastic material is selected from the group consisting of nylon, polyacetal, polyurethane, polypropylene, chlorinated polyethylene and synthetic rubber.
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