典型文献
Ultralight and ordered lamellar polyimide-based graphene foams with efficient broadband electromagnetic absorption
文献摘要：
The development of high-performance microwave absorption materials with strong absorption capacity and broad bandwidth is highly desirable in the field of electromagnetic pollution protection.Herein,ultra-light polyimide-based graphene foam with ordered lamellar structure is precisely designed and control-lably constructed by bidirectional freezing process.More lamellar interfaces formed inside the foam per unit volume effectively facilitate the layer-by-layer dissipation for the vertical incident electromagnetic waves,thereby endowing the foam with efficient broadband electromagnetic absorption performance.More importantly,electromagnetic absorption performance can be controllably adjusted by optimizing impedance distribution and microstructure of skeletons.As a result,the optimized foam with an ultralow density of 9.10 mg/cm3 presents a minimum reflection loss value of-61.29 dB at 9.25 GHz and an effec-tive absorption bandwidth of 5.51 GHz(7.06-12.57 GHz,covering the whole X band)when the thickness is 4.75 mm.
文献关键词：
中图分类号：
作者姓名：
Yawei Zhang;Shuangshuang Li;Xinwei Tang;Wei Fan;Qianqian Lan;Le Li;Piming Ma;Weifu Dong;Zicheng Wang;Tianxi Liu
作者机构：
The Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,Institute of Nanocomposites and Energy Materials,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China
文献出处：
引用格式：
[1]Yawei Zhang;Shuangshuang Li;Xinwei Tang;Wei Fan;Qianqian Lan;Le Li;Piming Ma;Weifu Dong;Zicheng Wang;Tianxi Liu-.Ultralight and ordered lamellar polyimide-based graphene foams with efficient broadband electromagnetic absorption)[J].材料科学技术（英文版）,2022(07):97-104
A类：
lably
B类：
Ultralight,ordered,lamellar,polyimide,graphene,foams,efficient,broadband,electromagnetic,absorption,development,performance,microwave,materials,strong,capacity,bandwidth,highly,desirable,field,pollution,protection,Herein,precisely,designed,constructed,bidirectional,freezing,process,More,interfaces,formed,inside,unit,volume,effectively,facilitate,layer,dissipation,vertical,incident,waves,thereby,endowing,importantly,can,be,controllably,adjusted,optimizing,impedance,distribution,microstructure,skeletons,result,optimized,ultralow,density,cm3,presents,minimum,reflection,loss,value,dB,GHz,covering,whole,when,thickness
AB值：
0.542228
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