A flexible absorbing material was prepared by mixing nitrile rubber with homemade flake carbonyl iron powder with silica coating.The effect of microwave-absorber content and thickness on microwave absorption properties in the range of 1～16GHz and mechanical properties were studied.The results shown that the flaking process of carbonyl iron powder could increase its permeability.The reflection loss of absorbing patch with thickness of 1.5mm and 85% FCIP@SiO2 reached -13.58dB at 2.18GHz.The microwave absorption properties of absorbing patch was not changed after 200℃ treatment for 24h,displaying good mechanical properties and high temperature resistance.
[1] 李泽,王建江,高海涛.P波段吸波材料研究进展[J].化工新型材料,2020,48(3):1-5.
[2] Cheng Y,Xu Y G,Cai J,et al.Effect of the bio-absorbent on the microwave absorption property of the flaky CIPs/rubber absorbers[J].Journal of Magnetism and Magnetic Materials,2015,389:106-112.
[3] Idris F M,Hashim M,Abbas Z,et al.Recent developments of smart electromagnetic absorbers based polymer-composites at gigahertz frequencies[J].Journal of Magnetism and Magnetic Materials,2016,405:197-208.
[4] Zhao P F,Li L F,Luo Y Y,et al.Effect of blend ratio on the morphology and electromagnetic properties of nanoparticles incorporated natural rubber blends[J].Composites Part B,2016,99:216-223.
[5] Faez R,Martin I M,De Paoli M A,et al.Microwave properties of EPDM/PAni-DBSA blends[J].Synthetic Metals,2001,119:435-436.
[6] Al-Ghamdi A A,Al-Hartomy O A,Al-Solamy F R,et al.Conductive carbon black/magnetite hybrid fillers in microwave absorbing composites based on natural rubber[J].Composites Part B,2016,96:231-241.
[7] Xu H B,Bie S W,Xu Y S,et al.Broad bandwidth of thin composite radar absorbing structures embedded with frequency selective surfaces[J].Composites:Part A,2016,80:111-117.
[8] Singh Vivek K,Shukla Anuj,Patra Manoj K,et al.Microwave absorbing properties of a thermally reduced graphene oxide/nitrile butadiene rubber composite[J].Carbon,2012,50(6):2202-2208.
[9] Jia L C,Li Y K,Yan D X.Flexible and efficient electromagnetic interference shielding materials from ground tire rubber[J].Carbon,2017,121:267-273.
[10] 段海平,李国防,段玉平,等.橡胶基复合吸波贴片的电磁性能研究.表面技术,2010,39(5):61-64.
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