镀镍石墨烯的微波吸收性能

被引:28
作者
方建军
李素芳
查文珂
从洪云
陈俊芳
陈宗璋
机构
[1] 湖南大学化学化工学院
基金
湖南省自然科学基金;
关键词
石墨烯; 化学镀镍; 吸波性能;
D O I
暂无
中图分类号
TQ153.12 [];
学科分类号
摘要
用化学还原液相悬浮氧化石墨法制备了石墨烯,经亲水处理后,利用化学镀镍法在其表面镀上均匀镍颗粒层.采用SEM、EDX、振动样品磁强计等对样品的形貌、元素成分与磁性质进行了表征,并用矢量网络分析仪测试了样品在2~18GHz频带内的复磁导率和复介电常数,利用计算机模拟出不同厚度材料的微波衰减性能.结果表明,材料的微波吸收峰随着样品厚度的增加向低频移动,材料的电磁损耗机制主要为电损耗,未镀镍石墨烯的吸波层厚度为1mm时,在7GHz左右最大衰减值-为-6.5dB,镀镍石墨烯的吸波层厚度为1.5mm时,在约12GHz时最大值为-16.5dB,并且在频带9.5~14.6 GHz的范围内达到-10dB的吸收.
引用
收藏
页码:467 / 471
页数:5
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