Effect of Heat Treatment on the Microwave Electromagnetic Properties of Carbonyl Iron/Epoxy-Silicone Resin Coatings

2010 ◽  
Vol 26 (11) ◽  
pp. 1011-1015 ◽  
Author(s):  
Yuchang Qing ◽  
Wancheng Zhou ◽  
Shu Jia ◽  
Fa Luo ◽  
Dongmei Zhu
Keyword(s):  
Heat Treatment ◽  
Carbonyl Iron ◽  
Electromagnetic Properties ◽  
Silicone Resin

scholarly journals Change of Surface Characteristic of Cotton and Polyester Fabrics Treated with Silicone Resin by Washing and Subsequent Heat Treatment

2005 ◽  
Vol 61 (11) ◽  
pp. 309-312 ◽  
Author(s):  
Muncheul Lee ◽  
Kenji Nishi ◽  
Dong Seok Jeong ◽  
Takako Tokuyama ◽  
Toshihiko Itazu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Surface Characteristic ◽  
Subsequent Heat Treatment ◽  
Silicone Resin ◽  
Polyester Fabrics

Electromagnetic Properties of Silica-Coated Planar Anisotropy Carbonyl-Iron Particles in Quasimicrowave Band

2010 ◽  
Vol 160-162 ◽  
pp. 962-967 ◽  
Author(s):  
Rui Han ◽  
Xiang Hua Han ◽  
Liang Qiao ◽  
Tao Wang ◽  
Fa Shen Li
Keyword(s):  
Carbonyl Iron ◽  
Low Frequency ◽  
Electromagnetic Properties ◽  
Complex Permeability ◽  
Frequency Range ◽  
Planar Anisotropy ◽  
Amorphous Sio2 ◽  
Microwave Absorption Properties ◽  
Sio2 Particles ◽  
Minimum Reflection Loss

For the sake of thinner electromagnetic wave absorbers used in quasimicrowave band, planar anisotropy carbonyl-iron (PACI) coated with amorphous SiO2 particles as absorber and paraffin as matrix were prepared. The complex permeability, complex permittivity and microwave absorption properties were investigated in the frequency range of 0.1-18 GHz. Both the real parts of permeability and permittivity are increased with the increasing of PACI/SiO2 particles volume concentrations. The minimum reflection loss shifts to the low frequency region with increase in PACI/SiO2 particles volume concentrations. The decrease of matching frequency could be well explained by the increasing of and . The PACI/SiO2 core-shell material exhibits great potential in application absorbers in quasimicrowave frequency range.

scholarly journals Preparation and Characterization of High Magnetic Loss Microwave Absorber for Splitter Load

2020 ◽  
Vol 186 ◽  
pp. 03006
Author(s):  
Lan Tian ◽  
Dong Lichao ◽  
Li Nan ◽  
Zhang Chunbo ◽  
Zhang Hao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Iron Powder ◽  
Carbonyl Iron ◽  
Mechanical Performance ◽  
Magnetic Loss ◽  
Microwave Absorber ◽  
Electromagnetic Properties ◽  
Carbonyl Iron Powder ◽  
Absorbing Material ◽  
Microwave Absorbing

Microwave absorbing material was prepared using epoxy resin as matrix and spherical carbonyl iron powder (s-CIP), flaky carbonyl iron powder (f-CIP) as absorbing agent. Microwave absorbing, mechanical properties and structure of the composites containing different kinds of carbonyl iron powder (CIP) were investigated. The results show that the microwave absorber with flaky CIP have better electromagnetic properties than composites with spherical CIP. With concentration of spherical CIP increasing the electromagnetic properties of composites becomes better, except for the mechanical performance. The flaky CIP/epoxy resins composites with a loading of 79 wt% plate-like CIP has attenuation constant of 25.443 dB/cm in 3 GHz. The absorber prepared using flaky CIP has homogenous, dense structure and has excellent mechanical properties.

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