钡锌铁氧体硅藻土的制备及吸波性能的研究  

Study on Preparation of Barium-Zinc Ferrite Diatomaceous Earth and Its Wave Absorption Properties

作　　者：李思琪 李瑶 杨晗 崔宝栋 LI Siqi;LI Yao;YANG Han;CUI Baodong(Shenyang Ligong University,Shenyang Liaoning 110159,China;Shenyang Jianzhu University,Shenyang Liaoning 110168,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168

出　　处：《辽宁化工》2024年第11期1658-1661,1666,共5页Liaoning Chemical Industry

基　　金：国防基础科研计划项目。

摘　　要：随着互联网科技的发展,电磁污染问题愈发严重。研究Ba_(0.5)Zn_(0.5)Fe_(2)O_(4)/硅藻土的制备以及在不同热处理温度下的吸波性能,以改善电磁污染现象。以柠檬酸为络合剂,采用溶胶凝胶法制备钡锌铁/硅藻土前驱体,分别在550、650、750℃下进行热处理。3组不同热处理温度下对照实验结果表明:尖晶石型Ba_(0.5)Zn_(0.5)Fe_(2)O_(4)均匀致密的包覆在硅藻土表面,其中热处理温度为650℃时的铁氧体,反射损耗低于-10 dB的频率范围大于16 GHz,反射损耗在13.05 GHz达到-22.13 dB,吸波较好。With the development of internet technology,the problem of electromagnetic pollution becomes more and more serious.In this paper,the preparation of Ba_(0.5)Zn_(0.5)Fe_(2)O_(4)/diatomite and its wave-absorbing properties at different heat treatment temperatures were investigated to improve the electromagnetic pollution phenomenon.The Ba_(0.5)Zn_(0.5)Fe_(2)O_(4)/diatomite precursor was prepared by sol-gel method using citric acid as the complexing agent and heat-treated at 550℃,650℃and 750℃,respectively.The results of controlled tests at three groups of different heat treatment temperatures showed that spinel-type Ba_(0.5)Zn_(0.5)Fe_(2)O_(4)was uniformly and densely coated on the surface of diatomaceous earth,in which the ferrite at the heat treatment temperature of 650℃had reflectance lower than-10 dB in the frequency range of more than 16 GHz,and the reflectance reached-22.13 dB at 13.05 GHz,showing good absorbing performance.

关 键 词：溶胶凝胶法 硅藻土 铁氧体 反射率 电磁参数 

分 类 号：TB34[一般工业技术—材料科学与工程]