Microwave absorbing property and complex permittivity and permeability of epoxy composites containing Ni-coated and Ag filled carbon nanotubes

2008 ◽  
Vol 68 (14) ◽  
pp. 2902-2908 ◽  
Author(s):  
D ZHAO ◽  
X LI ◽  
Z SHEN
Keyword(s):  
Carbon Nanotubes ◽  
Complex Permittivity ◽  
Epoxy Composites ◽  
Permittivity And Permeability ◽  
Microwave Absorbing Property ◽  
Microwave Absorbing ◽  
Absorbing Property

Complex permittivity of epoxy composites with carbon nanotubes and TiO2 in microwave range

2021 ◽  
Vol 717 (1) ◽  
pp. 121-127
Author(s):  
O. V. Lozitsky ◽  
L. L. Vovchenko ◽  
L. Y. Matzui ◽  
V. V. Zagorodnii ◽  
V. V. Oliynyk ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Complex Permittivity ◽  
Epoxy Composites ◽  
Microwave Range

Effect of Structure Modification on the Microwave Absorbing Performance of Carbon Foams

2011 ◽  
Vol 197-198 ◽  
pp. 536-539 ◽  
Author(s):  
Zhi Gang Fang ◽  
Yu Xin Gao ◽  
Chun Fang
Keyword(s):  
Electric Conductivity ◽  
Carbon Foam ◽  
Structure Design ◽  
Structure Modification ◽  
Replication Process ◽  
Microwave Absorbing Properties ◽  
Carbon Foams ◽  
Microwave Absorbing Property ◽  
Microwave Absorbing ◽  
Absorbing Property

Carbon foams were prepared by a polymer sponge replication process and their microwave absorbing properties were investigated. The electric conductivity of carbon foam has a direct effect on its microwave absorbing property, as the carbon foam with a medium electric conductivity of 0.46S/m has got a relatively excellent microwave absorbing property and demonstrated a characteristic of broadband absorption. Some structure modification has been made on carbon foams to fruther imrove their microwave absorbing performance. The result shows that making slots, especially gradient slots on the surface of carbon foams can greatly improve their microwave absorbing properties, while the reflection coefficients for a three-layered carbon foam structure exceeds -10dB with the combination effect of multilayer structure design and parameters gradient variatioin in the whole frequency range of 2.6-18GHz, which is usually to be considered as the practical application standard for microwave absorbing materials.

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