Microwave Abosrbing Properties of CNTs Composites Attached with Fe3O4/CNTs Hybrid Buckypaper

doi:10.15541/jim20140200

Abstract

Abstract:

A naval hybrid buckypaper was fabricated by vacuum filtration method with monodispersed solution of Fe₃O₄ decorated carbon nanotubes (CNTs), which was easy to be infiltrated by resin and can be co-cured with polymer composites. The morphology, element composition, pore size distribution, and magnetic of hybrid buckypaper were characterized by field-emission scanning electron microscope (FE-SEM), energy dispersive spectrometer (EDS), Barret-Joyner-Halenda (BJH) and vibrating sample magnetometer. The electromagnetic parameters of CNTs composite and hybrid buckypaper attached CNTs composite were investigated in the frequency range of 8.2-18 GHz with wave guide method and the reflection loss can be calculated. The hybrid buckypaper with only absorbing thickness of 0.1 mm attached CNTs composite possesses much broader absorbing bandwidth and larger reflectivity than those of CNTs composite, nearly all of which reflectivity is below -10 dB in frequency range of 8.2-18 GHz and the minimum value is -43.18 dB at 15.42 GHz.

Key words: Fe3O4/decorated CNTs, hybrid buckypaper, CNTs composite, electromagnetic parameter, reflection loss

CLC Number:

TB33
V218

LU Shao-Wei, LI Qian, XIONG Xu-Hai, MA Ke-Ming, XU Wei-Kai, JIA Cai-Xia. Microwave Abosrbing Properties of CNTs Composites Attached with Fe₃O₄/CNTs Hybrid Buckypaper[J]. Journal of Inorganic Materials, 2015, 30(1): 23-28.

Figures/Tables 7

Fig. 1 Hybrid BP and hybrid BP composites

Table 1 Basic parameters of hybrid buckypaper

	Weight /mg	Radius /mm	Thickness /mm	Conductivity /(S?cm^-1)
Hybrid BP	549.2	50	0.1	19.76

Fig. 2 SEM images of hybrid BP (a), distribution of pore size diameter for hybrid BP (b), SEM images of hybrid BP/composite (c, d)

Fig. 3 Hysteresis loops of hybrid buckypaper

Fig. 4 Complex permittivity and complex permeability of hybrid BP/CNTs composite and CNTs composite

Fig. 5 Dielectric loss tanδε(a) and magnetic loss tanδµ (b) for hybrid BP/CNTs composite and CNTs composite

Fig. 6 Calculated reflection loss of hybrid BP/CNTs composite and CNTs composite

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Microwave Abosrbing Properties of CNTs Composites Attached with Fe₃O₄/CNTs Hybrid Buckypaper

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