SiO_2对羰基铁/炭黑双层吸波涂层吸波性能的影响  

Effect of SiO_2 on Wave Absorbing Performance of CI /CB Coating

作　　者：陈利阳[1] 柳军[1] 齐风华[1] 胡靖元[1] 张毅[1] 

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2013年第5期50-54,共5页Development and Application of Materials

摘　　要：以羰基铁和炭黑分别用于匹配层和吸收层制备了具有阻抗渐变结构(匹配层+吸收层)的1.2 mm厚环氧树脂基吸波涂层。通过在匹配层中加入透波剂SiO2,改善了吸波涂层的阻抗匹配性。随着SiO2在匹配层中含量的增加,涂层的反射损耗(RL)得到增强。当匹配层中SiO2与羰基铁及环氧树脂的比值为2∶5∶1时,涂层的吸收峰值达到-17.3 dB,涂层有效带宽(RL<-4 dB)达到5.7 GHz。Epoxy resin based double-layer composite coatings(matching layer and absorbing layer) with impedance gradient structure were prepared with thickness of 1. 2 mm,employing carbonyl iron( CI) and carbon black(CB) as absorbents in the matching layer and absorption layer respectively,in which SiO2 was introduced into the matching layer as wave-transmission material to improve the matching impendence. With increasing SiO2 content in the matching layer,the reflection loss( RL) was enhanced in the frequency range 2 ～ 18 GHz. The optimized SiO2,CI and resin weight ratio( SiO2: CI: ER) was 2∶5∶1,when the optimal RL got to- 17. 3 dB and the effective absorption band( RL <- 4 dB) reached 5. 7 GHz.

关 键 词：SIO2 羰基铁 吸波涂层 阻抗匹配 

分 类 号：TM25[一般工业技术—材料科学与工程]