材料科学
石墨烯
复合材料
接触角
复合数
扫描电子显微镜
X射线光电子能谱
拉曼光谱
电磁屏蔽
反射损耗
热稳定性
纳米技术
化学工程
光学
物理
工程类
作者
Kanthasamy Raagulan,Ramanaskanda Braveenth,Hee Jung Jang,Yun Seon Lee,Cheol-Min Yang,Bo Mi Kim,Jai Jung Moon,Kyu Yun Chai
出处
期刊:Materials
[MDPI AG]
日期:2018-09-22
卷期号:11 (10): 1803-1803
被引量:58
摘要
MXene and graphene based thin, flexible and low-density composite were prepared by cost effective spray coating and solvent casting method. The fabricated composite was characterized using Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray (EDX). The prepared composites showed hydrophobic nature with higher contact angle of 126°, −43 mN·m−1 wetting energy, −116 mN·m−1 spreading Coefficient and 30 mN·m−1 lowest work of adhesion. The composites displayed excellent conductivity of 13.68 S·cm−1 with 3.1 Ω·sq−1 lowest sheet resistance. All the composites showed an outstanding thermal stability and constrain highest weight lost until 400 °C. The MXene-graphene foam exhibited excellent EMI shielding of 53.8 dB (99.999%) with reflection of 13.10 dB and absorption of 43.38 dB in 8–12.4 GHz. The single coated carbon fabric displayed outstanding absolute shielding effectiveness of 35,369.82 dB·cm2·g−1. The above results lead perspective applications such as aeronautics, radars, air travels, mobile phones, handy electronics and military applications.
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