典型文献
Layered-structure N-doped expanded-graphite/boron nitride composites towards high performance of microwave absorption
文献摘要：
High-efficiency microwave absorbers with broadband absorption are strongly desired for electromag-netic protection.Herein,we successfully synthesized a hybrid microwave absorbing material with two-dimensional layered structure,which consisted of expanded graphite(EG)and boron nitride(BN).The introduction of BN is to regulate the conductivity of EG and also to improve the thermal stability of the composite material.The ultrathin BN nano-sheets were uniformly wrapped on the EG sheets via chemi-cal vapor deposition.Attributed to the dielectric loss and conductive loss,the as-prepared hybrid material exhibited high performance for microwave absorption.The effective absorbing bandwidth(reflection loss value<-10 dB)was achieved up to 9.37 GHz with the thickness of 2.4 mm in the frequency range of 5.75-6.98 GHz and 9.86-18 GHz.And the minimum reflection loss was-51.58 dB at the thickness of 3 mm.The excellent performance of microwave absorption was attributed to the dielectric loss,interfacial polarization loss and optimized impedance matching.Moreover,compared to pure EG,the thermal de-composition temperature of EG/BN composite materials had increased by about 100℃which was up to 714℃.Taking the advantages of high thermal stability of BN as well as the fine microwave absorbability of EG,the EG/BN composites would be applied in high-temperature microwave absorbing fields.
文献关键词：
中图分类号：
作者姓名：
Zhuguang Nie;Yang Feng;Qing Zhu;Ying Xia;Liping Luo;Lan Ma;Jie Su;Xingman Hu;Rumin Wang;Shuhua Qi
作者机构：
School of Chemistry and Chemical Engineering Northwestern Polytechnical University,Xi'an 710072,China
文献出处：
引用格式：
[1]Zhuguang Nie;Yang Feng;Qing Zhu;Ying Xia;Liping Luo;Lan Ma;Jie Su;Xingman Hu;Rumin Wang;Shuhua Qi-.Layered-structure N-doped expanded-graphite/boron nitride composites towards high performance of microwave absorption)[J].材料科学技术（英文版）,2022(18):71-81
A类：
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Layered,structure,doped,expanded,graphite,boron,nitride,composites,towards,high,performance,microwave,absorption,High,efficiency,absorbers,broadband,strongly,desired,electromag,netic,protection,Herein,successfully,synthesized,hybrid,absorbing,two,dimensional,layered,which,consisted,EG,BN,introduction,regulate,conductivity,also,improve,thermal,stability,ultrathin,nano,sheets,were,uniformly,wrapped,via,chemi,cal,vapor,deposition,Attributed,dielectric,loss,conductive,prepared,exhibited,effective,bandwidth,reflection,value,dB,was,achieved,up,GHz,thickness,frequency,range,And,minimum,excellent,attributed,interfacial,polarization,optimized,impedance,matching,Moreover,compared,pure,composition,temperature,materials,had,increased,by,about,Taking,advantages,well,fine,absorbability,would,applied,fields
AB值：
0.532936
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