Structure-dependent electromagnetic wave absorbing properties of bowl-like and honeycomb TiO_(2)/CNT composites

作     者：Hua Jian Qinrui Du Qiaoqiao Men Li Guan Ruosong Li Bingbing Fan Xin Zhang Xiaoqin Guo Biao Zhao Rui Zhang Hua Jian;Qinrui Du;Qiaoqiao Men;Li Guan;Ruosong Li;Bingbing Fan;Xin Zhang;Xiaoqin Guo;Biao Zhao;Rui Zhang

作者机构：Henan Key Laboratory of Aeronautical Materials and Application TechnologySchool of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China School of Chemical EngineeringNorthwest UniversityXi’an 710069China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture TechnologyCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Zhengzhou Research Institute for Abrasives&Grinding Co.Ltd.Zhengzhou 450001China School of Material Science and EngineeringLuoyang Institute of Science and TechnologyLuoyang 471023China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第109卷第14期

页      面：105-113页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51802289) the Science Foundation for the Excellent Youth Scholars of Henan Province(No.212300410089) the Support Program for Scientific and Technological Innovation Talents of Higher Education in Henan Province(No.21HASTIT004) the China Postdoctoral Science Foundation(No.2019M661352) the Natural Science Basic Research Program in Shaanxi Province(No.202032100067) 

主　　题：Bowl-like structure Honeycomb structure TiO_(2)/CNT composite Electromagnetic wave absorption 

摘      要：Materials that can efficiently absorb electromagnetic waves(EMWs)are required to deal with electromagnetic *** design appears to be an efficient way to improve the EMW-absorption performance of such materials,particularly when adjustment of the constitution or mixing ratio is *** this study,bowl-like and honeycomb titanium dioxide/carbon nanotube(TiO_(2)/CNT)composites with different CNT contents were fabricated using the methods of hierarchical and mixing vacuum-assisted filtration,*** to the honeycomb structure,the bowl-like structure simultaneously facilitated greater interfacial polarization and conduction loss in favor of dielectric polarization,and augmented multiple *** high porosity of the honeycomb structure was conducive to optimizing the impedance matching *** bowl-like TiO_(2)/CNT composite exhibited a minimum reflection loss(RL_(min))of-38.6 dB(1.5 mm)with a wide effective absorption band(EAB;-10 dB)of4.2 GHz,while the honeycomb TiO_(2)/CNT composite showed an RLminof-34.8 dB(2.1 mm)with an EAB of 4.3 *** required mixing ratio in the matrix was only 15 wt%,outperforming that of the most closely related ***,both the bowl-like and honeycomb TiO_(2)/CNT composites are ideal candidates for light-weight and highly efficient EMW-absorbing materials.