摘要
电磁屏蔽建筑材料在当今信息化社会中具有重要的应用价值。在水泥砂浆中添加金属螺旋圈材料,在10kHz～1500MHz范围内进行电磁屏蔽性能测试。结果显示,随着频率的增加,屏蔽性能一般逐渐增强,在550MHz、1050MHz附近都有2个明显的拐点;在10kHz～550MHz范围,屏蔽效能都小于4dB;但在900～1050MHz频率范围内,最大屏蔽效能都能够超过10dB。
Building materials for electromagnetic shielding have extensive application in electronic information society. Steel spiral circle were added in mortar, shielding effectiveness of mortars were studied with the coaxial cable measurement in 10kHz-1500MHz. The results show that with the increase of frequency, shielding effectiveness increases gradually and the effectiveness curves have 2 manifest inflection points nearby 550MHz and 1050MHz. During 10kHz-550MHz, shielding effectiveness were less 4dB, but during 900--1050MHz, shielding effectiveness can exceed 10dB.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第4期111-113,117,共4页
Materials Reports
基金
住房和城乡建设部研究开发项目(2008-K4-6)
解放军理工大学工程兵工程学院2010年青年基金
关键词
金属手性材料
水泥砂浆
电磁屏蔽
steel spiral circle, mortar, electromagnetic shielding
