采用超声场下原位聚合法制备了Ba0.6Sr0.4-TiO3/PANI复合材料。其结构、形貌和电磁性能分别采用X射线衍射仪（XRD）、扫描电镜（SEM）和HP8510网络矢量分析仪进行了研究。结果表明,HCl掺杂后的PANI是部分结晶的。Ba0.6Sr0.4TiO3与PANI分子链之间存在某些相互作用。与PANI相比,在8.2～12GHz频率范围内,Ba0.6Sr0.4TiO3/PA-NI复合物的ε′值和ε″值均较大。在9.8～12.4GHz的频率范围内,Ba0.6Sr0.4TiO3/PANI复合物的tanδε值大于PANI的tanδε值。Ba0.6Sr0.4TiO3/PANI复合材料具有较好的微波吸收性能,最大损耗为-14dB,-10dB带宽超过了5GHz。
The Ba0.6Sr0.4TiO3/polyaniline composite was prepared by in situ polymerization method under the ultrasonic field.The structural characteristics,morphology and electromagnetic properties of the composites were analyzed by X-ray diffraction（XRD）,scanning electron microscope（SEM） and HP8510 network analyzer,respectively.The results indicated that HCl doped polyaniline had some degree of crystallinity.There was some interaction between the Ba0.6Sr0.4TiO3 particles and polyaniline chains.The imaginary and real parts of complex permittivity of the Ba0.6Sr0.4TiO3/polyaniline composite were higher than those of polyaniline from 8.2 to 12GHz.The dielectric loss tangent of Ba0.6Sr0.4TiO3/polyaniline composite was higher than that of polyaniline from 9.8 to 12.4GHz.The composite showed better electromagnetic wave absorbing property,with a minimum reflection loss of-14dB and a bandwidth of-10dB over the extended frequency range of 5GHz.
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