Preparation of graphene-carbonyl iron powder@tri-iron tetroxide composite and its better microwave absorption properties

2019 ◽  
Vol 30 (6) ◽  
pp. 5454-5463
Author(s):  
Yongfei Bai ◽  
Weihai Ma ◽  
Yanan Liu ◽  
Yi Liu ◽  
Jiewen Xue ◽  
...  
Keyword(s):  
Iron Powder ◽  
Microwave Absorption ◽  
Carbonyl Iron ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Carbonyl Iron Powder

Microwave Absorption Properties of one Thin Absorber Based on Carbonyl-Iron Powder

2011 ◽  
Vol 675-677 ◽  
pp. 861-864 ◽  
Author(s):  
Li Dong Liu ◽  
Yu Ping Duan ◽  
Shun Hua Liu ◽  
Jing Bo Guo ◽  
Li Yang Chen
Keyword(s):  
Iron Powder ◽  
Microwave Absorption ◽  
Carbonyl Iron ◽  
Weight Ratio ◽  
Vibrating Sample Magnetometer ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Chlorinated Polyethylene ◽  
Absorption Bandwidth ◽  
Carbonyl Iron Powder

In this paper, one thin microwave absorbing sheet employing carbonyl-iron powder (CIP) and chlorinated polyethylene (CPE) was prepared. The pattern and static magnetic properties of CIP were characterized by scanning electron microscope (SEM) and vibrating sample magnetometer (VSM), respectively. The electromagnetic parameters and loss mechanisms of CIP were measured and discussed. The microwave absorption properties of composite sheets with different thicknesses and CIP ratios in matrix were investigated by measuring reflection loss (RL) in 2-18GHz. The results showed that the microwave absorption properties could be optimized by controlling CIP content and thickness of sheet. For the sample with the weight ratio (CIP:CPE) of 10:1 and 1mm thickness, the absorption bandwidth (RL below -4dB) achieved 14GHz (4-18GHz).

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