PANI包覆单一铁氧体的结构和吸波性能  

Microstructure and microwave absorbing properties of PANI/ ferrite composite materials

作　　者：李貌[1] 方庆清[1] 熊为华[1] 周军[1] 

机构地区：[1]安徽大学物理与材料科学学院,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2008年第4期60-63,共4页Journal of Anhui University(Natural Science Edition)

基　　金：安徽省年度重点科技基金资助项目(05022045);安徽省科学和技术带头人基金资助项目(01080210)

摘　　要：采用原位复合法制备了聚苯胺包覆铁氧体的复合颗粒，并利用透射电子显微镜（TEM）、X射线衍射仪（XRD）和傅立叶红外光谱仪（FT—IR）等分析手段观测了复合颗粒的形貌、结构和性能．采用矢量网络分析仪在0．5～20GHz频段内测试了材料的吸波性能．实验结果表明，具有核／壳结构的导电聚苯胺复合材料具有较好的吸波性能．当掺入质量分数为15％的Li0.45Zn0.1Fe2.45O4时，复合颗粒吸波性能最好，其-8dB带宽达5GHz，最大损耗为26．1dB，且面密度最小为0．28g·cm^-2．PANI/Ferrite composite particles were prepared by in-situ composite method. Transmission electron microscope （ TEM ）, X-ray diffraction （ XRD ） and Fourier transform infrared spectrometer （FT-IR） was used to observe and measure the morphology, microstructure and properties. The absorption properties were measured using a vector network analyzer in frequency rang of 0.5 - 20GHz. The experiment results showed that the composite materials with core/shell structure exhibits excellent microwave absorbing property. When 15wt% Li0.45 Zn0.1 Fe2.45O4 were incorporated into PANI, the composite particles microwave absorbing properties were the best, the composite exhibited an absorption peak of 24.7dB and-8dB bandwidth of 5GHz, and the areal density was the least 0.28 g · cm^-2

关 键 词：聚苯胺/铁氧体复合材料 核/壳结构 吸波性能 

分 类 号：TM25[一般工业技术—材料科学与工程] TM277[电气工程—电工理论与新技术]