Abstract

Microwave absorption materials have attracted significant attention because of potential application in military stealth and information safety. In this work, MIL-100(Fe)/Graphene composite was successfully synthesized by a facile method and the microwave absorption mechanism were studied systematically. The as-prepared MIL-100(Fe)/Graphene shows excellent microwave absorption properties with a minimum reflection loss value of −50.9 dB at 13.6 GHz for absorber thickness of 1.8 mm. Moreover, the absorption peak frequency and effective microwave absorption region (< −10 dB) can be controlled in the range of 3.6-18.0 GHz by varying the thickness of the absorber. The highly efficient electromagnetic absorption performance of the MIL-100(Fe)/Graphene is mainly attributed to the enhanced impedance matching. The MIL-100(Fe)/Graphene composite has a great potential applied in the field of microwave absorption.

摘要

微波吸收材料因其在军事隐身和信息安全方面的潜在应用而备受关注。本工作采用简便的方法成功合成了MIL-100(Fe)/石墨烯复合材料，并对微波吸收机理进行了系统研究。所制备的 MIL-100(Fe)/石墨烯显示出优异的微波吸收特性，在 13.6 GHz 下，吸收体厚度为 1.8 mm 时的最小反射损耗值为 -50.9 dB。此外，通过改变吸收体的厚度，可以将吸收峰值频率和有效微波吸收区域（< -10 dB）控制在 3.6-18.0 GHz 范围内。MIL-100(Fe)/石墨烯的高效电磁吸收性能主要归功于增强的阻抗匹配。