羰基铁-聚苯胺复合吸波材料的制备及性能

Synthesis and Properties of Carbonyl Iron Polyaniline Microwave Absorption Composites

摘要: 为提高材料在低频段下的吸波性能，采用化学氧化聚合法和物理共混法制备聚苯胺和羰基铁聚苯胺复合材料。通过X射线衍射(XRD)、红外光谱(FT-IR)、矢量网络分析(PNA)等测试手段对材料的物相和性能进行了表征和分析。结果表明：在0~6 GHz，羰基铁-聚苯胺复合材料的吸波性能较纯羰基铁有了很大提高，而且其吸收峰向低频区移动，当导电聚苯胺的质量分数为0.06时，其吸波性能最佳，最大吸收峰值为-39.1 dB，-10 dB以下频宽为1 639 MHz。

Abstract: In order to increase the absorbing ability in the lower band, the polyaniline(PANI) and carbonyl iron polyaniline composites were prepared by chemical oxidative polymerization and physical blending. The phase and performance of materials were analyzed and characterized by XRD, FT-IR and PNA. Results showed that the absorption ability of the carbonyl iron polyaniline composites was advanced in 0—6 GHz. Meanwhile, the absorption peak of composites moved toward low frequencies. When the mass fraction of PANI was 0.06, it had the best wave absorbing property, of which the maximum absorption could reach -39.1 dB and the bandwidth below -10 dB was 1 639 MHz.