膨胀石墨复合材料的电磁特性及其3mm、8mm波动态衰减性能研究  

Electromagnetism Characteristics and 3mm, 8mm Wave Dynamic Attenuation Performance of Expanded Graphite Composite

作　　者：周明善[1] 李澄俊[1] 徐铭[1] 吴正东[1] 

机构地区：[1]南京理工大学 化工学院,南京210094

出　　处：《无机材料学报》2007年第3期509-513,共5页Journal of Inorganic Materials

摘　　要：通过高温下膨化二茂铁与可膨胀石墨混合物的方法,制得附着铁氧化物的膨胀石墨复合材料．铁氧化物的主要成分为Fe2O3、Fe3O4,随着铁氧化物含量的增加,其平均电导率呈下降趋势,而磁化强度逐渐增强,复合材料呈亚铁磁性．在不影响膨胀石墨电损耗吸收的同时,复合材料增加了磁损耗吸收,其3mm、8mm波动态衰减效果明显优于单纯的膨胀石墨．二茂铁和可膨胀石墨的质量比为2-3:5时,3mm、8mm波动态衰减能力最强．The expanded graphite composites with iron oxides adsorbed were prepared by expanding the mixture of ferrocene and expandable graphite under high temperatures. The main components of iron oxides were Fe2O3, Fe3O4. With the increase of iron oxides contents, the mean conductivity of the composites dropped slowly, however, the magnetization intensity strengthened gradually. Without prejudice to the electric loss absorption of expanded graphite, the magnetic loss absorption of composites was increased. Compared with pure expanded graphite, the 3mm, 8ram wave dynamic attenuation performances of the composite were obviously superior. The 3mm, 8ram wave dynamic attenuation capabilities were strongest, when the weight ratio of ferrocene and expandable graphite was （2-3）：5.

关 键 词：膨胀石墨复合材料 毫米波 磁性 电导率 

分 类 号：TB34[一般工业技术—材料科学与工程]