掺短碳纤维和石墨混凝土的低频电磁屏蔽性能  

EFFECTIVENESS OF LOW FREQUENCY ELECTROMAGNETIC SHIELDING CONCRETE WITH SHORT CARBON FIBERS AND GRAPHITE

作　　者：司琼[1] 董发勤[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《硅酸盐学报》2005年第7期916-920,共5页Journal of The Chinese Ceramic Society

基　　金："863"计划(2001AA322070)资助项目。

摘　　要：对短碳纤维石墨混凝土的电磁屏蔽性能进行了研究,分析了短碳纤维和石墨的含量对混凝土低频电磁屏蔽效能的影响,探讨了短碳纤维的加入对石墨混凝土电磁屏蔽性能的影响机理,为设计高性能低频电磁屏蔽混凝土提供了依据。在1MHz～1.8GHz低频区域,短碳纤维石墨混凝土的最大电磁屏蔽值达到8.5dB。The electromagnetic shielding properties of short carbon fibers and graphite concrete were investigated, and the influence for the contents of the short carbon fibers and graphite on the electromagnetic shielding effectiveness of the concrete in low frequency was studied. The mechanism causing the influence of the short carbon fibers adulteration on the electromagnetic shielding effectiveness of the graphite concrete at low frequency was investigated. The results of the investigation provide the basis for further designing and producing of high-powered electromagnetic shielding concrete in low frequency. The maximum electromagnetic shielding effectiveness up to 8.5 dB in a low frequency range of 1 MHz-1.8 GHz is obtained.

关 键 词：短碳纤维 石墨 电磁屏蔽 屏蔽效能 

分 类 号：TM25[一般工业技术—材料科学与工程] TU528[电气工程—电工理论与新技术]