Science China Chemistry

, Volume 55, Issue 7, pp 1220–1227 | Cite as

A novel microwave absorber — BaAl2Fe10O19/poly(m-toluidine) composite: Preparation and electromagnetic properties

  • KeYu Chen
  • QingQing Xu
  • LiangChao Li
  • PeiJun Gong
  • HaiFeng Chen
  • QiuShi Xiao
  • Feng Xu
Articles
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Accepted:

Abstract

BaFe10Al2O19/poly(m-toluidine) (BFA/PMT) composites were synthesized by in-situ polymerization of m-toluidine in the presence of BaFe10Al2O19 particles. The structure, composition and morphology of the obtained samples were characterized by using XRD, FT-IR, UV-visible spectroscopy, SEM and TEM techniques. Their electrical conductivity, magnetic property and microwave absorbing property were measured by the four-probe meter, the vibrating sample magnetometer and the vector network analyzer, respectively. The results indicated that BFA particles were coated effectively by PMT polymer and some interactions between PMT and BFA particles existing in the composites. The conductivity of BFA/PMT composite is smaller than that of pure polymers and its saturation magnetization is a little smaller than that of pure BFA. The influence of the constitution and film thickness of absorbent on its microwave absorbing property is evident. The microwave absorbing properties of the BFA/PMT composites are better than those of pure BFA and PMT. When optimizing the mass rate of BFA/PMT to 0.3, the absorbent with 2 mm film thickness has the minimum reflection loss of −28.26 dB at approximate 14.24 GHz, and the maximum available bandwidth of 8.8 GHz, respectively. The results show that these composites can be used as advancing absorption and shielding materials due to their favorable microwave absorbing property.

Keywords

composites in-situ polymerization microwave absorbing property 
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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • KeYu Chen
    • 1
  • QingQing Xu
    • 2
  • LiangChao Li
    • 1
  • PeiJun Gong
    • 1
  • HaiFeng Chen
    • 1
  • QiuShi Xiao
    • 1
  • Feng Xu
    • 1
  1. 1.Zhejiang Key Laboratory for Reactive Chemistry on Solid SurfaceZhejiang Normal UniversityJinhuaChina
  2. 2.Quzhou CollegeQuzhouChina

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