表面をカップリング処理したカルボニル鉄粒子が高密度に分散した薄型電波吸収体

概要

論文の詳細を見る
Magnetic polymer compounds containing carbonyl-iron particles surface-treated with a silane coupling agent were used to fabricate electromagnetic wave absorbers for the quasi-microwave band (1-3 GHz). The coupling treatment changed the surface property of the particles from hydrophilic to lipophilic, and simultaneously decreased the electrical conductivity on the surface of the particles. These polymer compounds can thus contain a large volume (up to 59 vol%) of the particles, and as a result show high permeability and permittivity (7 and 45, respectively, at 2 GHz) without generating much conductivity. These magnetic and electrical conditions-high permeability and permittivity with low conductivity-result in a wave absorber that is thinner (about 2 mm thick) than a conventional spinel-type ferrite absorber (about 7 mm thick).
社団法人日本磁気学会の論文
1998-04-15