PANI/SrFe_(12)O_(19)复合材料的结构和吸波性能  

Microstructure and Microwave Absorbing Properties of PANI/ SrFe_(12)O_(19) Composite Materials

作　　者：熊为华[1] 方庆清[1] 王保明[1] 王翠萍[1] 周军[1] 李貌[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：《磁性材料及器件》2007年第3期30-32,45,共4页Journal of Magnetic Materials and Devices

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

摘　　要：采用氧化物法制备了导电聚苯胺（PANI）铁氧体磁性复合颗粒。利用透射电子显微镜（TEM）、X射线衍射仪（XRD）和傅里叶红外光谱仪（FT-IR）等分析手段观测了复合粒子的形貌、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SrFe12O19和Li0.45Zn0.1Fe2.45O4掺入量分别为15wt%和5wt%时,最大衰减为24.7dB,-8dB带宽达4.4GHz。因此通过调整复合体中铁氧体的含量和种类,可以调整其特性以满足不同需求。PANI/SrFe12O19 composite particles were prepared by oxide 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 of the samples, The absorption properties were measured using a vector network analyzer in frequency rang of 0.5-20GHz. The experiment results showed that the composites materials with core/shell structure exhibits excellent microwave absorbing property. The composite with 15wt% SrFe12O19 and 5wt% Li0.45Zn0.1Fe2.45O4 exhitits an absorption peak of 24,7dB and -8dB bandwidth of 4.4GHz. So adjusting types and content of ferrites can change the properties to satisfy different requirements.

关 键 词：聚苯胺/铁氧体复合材料 吸波剂 微结构 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]