膨胀石墨用作烟幕材料衰减毫米波性能研究  

Study on Millimeter Wave Attenuation Character of Expanded Graphite Used as Smoke Material

作　　者：胡晓春[1] 乔小晶[1] 薛富民[1] 

机构地区：[1]北京理工大学机电工程学院爆炸科学与技术国家重点实验室

出　　处：《宇航材料工艺》2005年第5期41-43,56,共4页Aerospace Materials & Technology

摘　　要：以无机-有机混酸为介质用电化学法制备了膨胀石墨,分析了影响膨胀石墨蠕虫长度的因素;对样品进行了红外及热重分析.样品在8～14μm红外波段有数个特征吸收峰;在DTG曲线上第一个失重峰出现在201℃;540℃时混酸插层化合物失重率为12.9%.测试了不同长度分布的膨胀石墨蠕虫对8毫米波的衰减性能,结果表明:当石墨蠕虫长度主要分布在2.7～3.9 mm时,干扰效果较好,衰减率可达11.61dB,为潜在的宽波段干扰剂.Expandable graphite is prepared in mixing acid solution by using electrochemical method and the factors influencing worm lengths of expanded graphite are analyzed. FT - IR and TG - DTG analysis is carried out. FT -IR curve shows that there are several characteristic absorption peaks of the expandable graphite in 8 - 14 μm. In TG - DTG curves an obvious weight loss peak occurs at 201℃ and weight loss proportion reaches 12.9% at 540℃. 8 Millimeter wave attenuation characters of expanded graphite worms with different length distribution are tested. The results show that attenuation gets to the maximum 11.61 dB when the sizes of expanded graphite worms are in 2.7 - 3.9 mm. This expanded graphite is potential screening material to interfere electromagnetic wave at wide wave band.

关 键 词：膨胀石墨 烟幕材料 衰减毫米波性能 电化学法 石墨蠕虫 制导技术 

分 类 号：E951.4[军事—军事工程]