GF/ACF电路屏复合材料吸波性能研究  

Microwave absorbing properties of glass-fiber/activated carbonfiber felt screens composites

作　　者：夏少旭[1] 李利伟[1] 史燕妮[1] 陈师[1] 吴琪琳[1,2] 

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《高科技纤维与应用》2015年第1期53-57,61,共6页Hi-Tech Fiber and Application

摘　　要：将一定尺寸的玻璃纤维片(GF-sheet)填充至矩形活性碳纤维(Activated Carbon Fiber,ACF)电路屏空穴中,制备了GF/ACF电路屏复合材料,研究了GF-sheet尺寸对ACF电路屏复合材料电磁波反射及吸收特性的影响。结果表明,在均匀分布的ACF电路屏空穴中填充相应尺寸的GF-sheet能有效降低复合材料对电磁波的反射特性,增强吸波能力;GF水平排布的反射性能优于垂直排布;当在正方形ACF电路屏空穴中填充边长l=2 cm的GF-sheet时,最低反射值达到-29.8 d B,其吸波性能较未填充GF-sheet的复合材料,其-10 d B以下的最低反射衰减提高了60.4%,达到-21.5 d B,有效带宽有所拓宽;当在长方形ACF电路屏空穴中填充l=2 cm,w=1 cm的GF-sheet,反射衰减最低,最低反射衰减为-16.1 d B,有效带宽为12.1 GHz。The glass fiber sheets（GF-sheets） with different sizes are placed into the apertures of activated carbon fiber（ACF） frequency selective surfaces（FSS） structures to form GF/ACF microwave absorbing composites, and the microwave reflective and absorption properties were investigated. Results show that when appropriate size of the GF-sheets were filled in the square apertures of ACF FSS, the reflective properties decreased and the absorbing properties enhanced; And the reflective properties of the composites with vertical arrangement GF-sheets was better than that with horizontal arrangement GF-sheet; When GF-sheets with size of l =2 cm were filled into the ACF felt screen, the minimum reflectance reached-29.8 d B, while the reflection loss below-10 d B was effectively increased 60.4% to-21.5 d B than that of pure ACF felt screen, and the effective bandwidth was enhanced; When GF-sheets of l =2 cm, w =1 cm were filled into the rectangle apertures, the minimum reflectance reached-16.1 d B, and the effective bandwidth was greatly improved to 12.1 GHz.

关 键 词：玻璃纤维 活性碳纤维 电路屏 复合材料 电磁波 反射特性 吸波 性能 研究 

分 类 号：TB332[一般工业技术—材料科学与工程]