摘要
随着科学技术的发展,电子信息技术不断更新换代,导致电磁波辐射对人类的健康产生影响,因此,高性能的电磁波吸收材料成为目前的研究热点。碳材料本身由于具有质地轻、密度小及介电常数高的优势被广泛地应用于电磁波吸收领域,然而,如何获得“薄、轻、宽”的吸波材料仍然是亟需解决的问题。文中通过水热合成法制备Fe_(3)O_(4)纳米粒子,在Fe_(3)O_(4)外层包覆MOFs材料制得Fe_(3)O_(4)@ZIF-8,再通过高温热解生成Fe_(3)O_(4)/ZnFe_(2)O_(4),并对材料的形貌、结构及电磁学性能进行研究。结果表明:Fe_(3)O_(4)/ZnFe_(2)O_(4)复合材料的粒径为600 nm左右,在2~18 GHz频段呈现有效吸收;在6.8 GHz频段,厚度为2 mm时样品具备-40.9 dB的最优反射损耗。
With the development of technology,electronic information technology is constantly upgrading.Electromagnetic radiation influences the human health severely.The research to electromagnetic wave absorbing materials with well performance has become a hot topic.Nevertheless,how to obtain “thin,light and wide” absorbing material is still a challenge.Owning to light weight,low density and high conductivity,carbon materials are widely used in electromagnetic wave absorption field.In this paper,Fe_(3)O_(4) nanoparticles were prepared by hydrothermal synthesis.Fe_(3)O_(4)was encapsulated by outer MOFs materials to obtain Fe_(3)O_(4)@ZIF-8.Then Fe_(3)O_(4)/ZnFe_(2)O_(4) was synthesized through high-temperature pyrolysis.Meanwhile,morphology,structure and electromagnetic property of materials were researched.The particle size of Fe_(3)O_(4)/ZnFe_(2)O_(4) composite is about 600nm and show effective absorption at 2~18 GHz.The product exhibited excellent reflection loss of-40.9 dB at 6.8 GHz and the thick of 2 mm.
作者
王晓丹
谭庆浩
罗霄
肖雪
李兆清
王慧文
WANG Xiaodan;TAN Qinghao;LUO Xiao;XIAO Xue;LI Zhaoqing;WANG Huiwen(College of Materials and Chemical Engineering,Heilongjiang Institute of Technology,Harbin 150050,China)
出处
《黑龙江工程学院学报》
CAS
2023年第3期8-13,34,共7页
Journal of Heilongjiang Institute of Technology
基金
黑龙江工程学院博士科研启动基金项目(2019BJ12,2019BJ13,2015BJ10)
哈尔滨市科技创新人才研究专项资金项目(优秀学科带头人计划类)(2016RAXXJ050)
黑龙江省属本科高校基本科研业务费科研项目(2020CX05)
大学生创新创业训练计划项目(202211802144)。
关键词
磁性纳米粒子
MOFs材料
碳材料
电磁波吸收
核壳结构
magnetic nanoparticle
MOFs materials
carbon materials
microwave absorption
yolk-shell structure
