摘要
以溶胶–凝胶自蔓延燃烧法与原位掺杂聚合法相结合的方式制备了漂珠/钡铁氧体/聚苯胺复合材料。利用扫描电镜（SEM）、X射线衍射仪（XRD）和傅立叶红外光谱仪（FTIR）等表征了材料的微观形貌、晶体结构及组成。采用矢量网络分析仪在2~18 GHz频段内测定了复合材料的电磁参数。结果表明：所制材料的介质损耗和磁损耗最大值分别为0.30和0.52;当样品吸波层厚度为3.0 mm时,在电磁波频率为7.1 GHz时样品的反射损耗峰值为–33.74dB,在–20 dB的吸收带宽为3.2 GHz。
The composite material of cenosphere/barium ferrite/polyaniline was successfully prepared by sol-gel self-propagating combustion method combining in-situ doping polymerization deposition technique. The morphology, crystal structure and composition of the samples were characterized by scanning electron microscope （SEM）, X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FTIR）. In addition, the electromagnetic parameters were determined by vector network analyzer in the frequency range of 2-18 GHz. The results show that the maximum dielectric loss and magnetic loss of the prepared sample are 0.30 and 0.52, respectively. Meanwhile, the maximum reflection toss of the prepared sample reaches -33.74 dB at 7.1 GHz, and the absorption bandwidth is 3.2 GHz at-20 dB when the thickness of absorption layer of the prepared sample is 3.0 mm.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2012年第3期40-44,共5页
Electronic Components And Materials
关键词
钡铁氧体
聚苯胺
粉煤灰漂珠
电磁性能
吸波性能
barium ferrite
polyaniline
fly ash cenospheres
electromagnetic properties
microwave absorbing properties
