Ni_(0.6)Zn_(0.4)Fe_(2)O_(4)/还原氧化石墨烯复合材料及其改性涂层的电磁吸波性能  

Electromagnetic absorption properties of Ni_(0.6)Zn_(0.4)Fe_(2)O_(4)/rGO composites and their modified coatings

作　　者：谢艳娇 马晓 包云凤 宫新菊 官海龙 郭思瑶[1] XIE Yanjiao;MA Xiao;BAO Yunfeng;GONG Xinju;GUAN Hailong;GUO Siyao(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China;Qingdao West Coast Natural Resources Bureau,Qingdao 266400,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266237,China;The Second Construction Limited Company of China Construction Eighth Engineering Division,Jinan 250014,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]青岛西海岸新区自然资源局,青岛266400 [3]中国船舶集团有限公司第七二五研究所海洋腐蚀与防护重点实验室,青岛266237 [4]中建八局第二建设有限公司,济南250014

出　　处：《复合材料学报》2025年第3期1375-1386,共12页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51978354)。

摘　　要：随着5G时代的到来,各类电子设备的广泛使用随之导致了严重的电磁污染问题,迫切需要开发高性能的电磁吸波材料来解决上述问题。本文采用简单的原位生长法在还原氧化石墨烯(rGO)片层上生长了镍锌铁氧体(Ni_(0.6)Zn_(0.4)Fe_(2)O_(4))纳米粒子,通过控制rGO的掺量制备了一系列的Ni_(0.6)Zn_(0.4)Fe_(2)O_(4)/rGO(NZFO/rGO)吸波剂,NZFO/rGO-1:0.5在11.24 GHz时的最小反射损耗(RL)值为−60.72 dB,匹配厚度为2.98 mm。此外,制备的NZFO/rGO/环氧树脂吸波涂层在NZFO/rGO-1:0.5复合材料掺量为5wt%时,涂覆在水泥基平板上的最小RL值为−42.2 dB,比纯环氧树脂涂层的最小RL值降低了90.95%;当掺量为3wt%时,有效吸收带宽(EAB)为8.88 GHz,RL值小于−5 dB时吸收带宽可达13.2 GHz。With the advent of the 5G era,the widespread use of various electronic devices has led to serious electromagnetic pollution problems.It is urgent to develop high-performance electromagnetic wave absorption materials to solve the above problems.In our work,nickel zinc ferrite(Ni_(0.6)Zn_(0.4)Fe_(2)O_(4))nanoparticles were grown on reduced graphene oxide(rGO)sheets by a simple in situ growth method,and a series of Ni_(0.6)Zn_(0.4)Fe_(2)O_(4)/rGO(NZFO/rGO)absorbers were prepared by adjusting the dosage of rGO.The minimum reflection loss(RL)of NZFO/rGO-1:0.5 at 11.24 GHz is−60.72 dB with the matching thickness of 2.98 mm.In addition,when 5wt%NZFO/rGO-1:0.5 composites were used to prepare the modified epoxy resin coating,the minimum RL value of the cement-based materials coated the coating is−42.2 dB,which is 90.95%lower than the minimum RL value of pure epoxy resin specimen;When the dosage is 3wt%,the effective absorption bandwidth(EAB)value is 8.88 GHz,and the absorption bandwidth can reach 13.2 GHz when the RL value is less than−5 dB.

关 键 词：Ni_(0.6)Zn_(0.4)Fe_(2)O_(4) 匹配厚度 反射损耗 环氧树脂 吸波涂层 

分 类 号：TB333[一般工业技术—材料科学与工程]