透波层厚度对结构吸波材料吸收峰的影响  

Influence of wave-transparent layer thickness to the absorption peak of the absorbing structure composite materials

作　　者：王春齐[1] 陈辉[1] 杜作娟[1] 黄小忠[1] 

机构地区：[1]中南大学航空航天学院,长沙410073

出　　处：《功能材料》2015年第13期13045-13047,共3页Journal of Functional Materials

基　　金：国家部委预研资助项目(513204302)

摘　　要：采用弓形法测试反射率,研究透波层的厚度对结构吸波复合材料吸收峰的影响.结果显示,在4-18GHz范围内,厚度对其吸波性能具有显著影响：透波层厚度为0.95mm 时,结构吸波材料的吸收峰值最高,达-22.6dB;其吸收峰值先随透波层厚度的增加而增强,而后逐渐减弱,透波层厚度对吸收峰值的影响可用二次多项式描述;吸收峰的位置随透波层的厚度增加向低频方向漂移,其漂移位移与透波层厚度线性相关,满足一次线性方程.The affection of thickness to the absorption peak of the absorbing structure composite materials were studied by arch method. The results showed that the thickness of wave-transparent layer had a significant effect on the performance of the absorbing structure composite materials at the range of 4-18 GHz. While the thickness were 0. 95 mm,the highest absorption peak were obtained and up to- 22. 6 d B. With increasing of the wave-transparent layer's thickness,the max absorption peaks were enhanced firstly,and then gradually weaken. It could be characterized by quadratic polynomial.At same time,the absorption peak positions were drift to the low-frequency band and the pattern of drift displacement and wave-transparent layer's thickness meet the first-order equation.

关 键 词：结构吸波材料 透波层 厚度 吸收峰 

分 类 号：TB332[一般工业技术—材料科学与工程]