发明名称 |
Microwave absorber employing acicular magnetic metallic filaments |
摘要 |
An electromagnetic radiation absorber is formed by dispersing into a dielectric binder acicular magnetic metallic filaments with an average length of about 10 micron or less, diameters of 0.1 micron or more, and aspect (length/diameter) ratios between 10:1 and 50:1. Preferably the average length is about 5 micron, the aspect ratios are between 10:1 and 25:1, and the dielectric binder is polymeric. The volume fraction of the filaments may be lower than 35% of the total and still provide satisfactory absorption. An absorbing paint is formed by dissolving the absorber in a base liquid. The absorber or absorbing paint may be applied to a conductive surface, such as a metallic wire, plate or foil. Impedance matching materials are preferred but not required.
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申请公布号 |
US5085931(A) |
申请公布日期 |
1992.02.04 |
申请号 |
US19900547397 |
申请日期 |
1990.07.03 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
BOYER, III, CHARLES E.;BORCHERS, ERIC J.;KUO, RICHARD J.;HOYLE, CHARLES D. |
分类号 |
H01Q17/00 |
主分类号 |
H01Q17/00 |
代理机构 |
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地址 |
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