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MXene的有效利用及其对电磁干扰屏蔽的影响：基于MXene-PAT-聚（对氨基酚）-聚苯胺共聚物的柔性、自立式和导热复合材料。

An effective utilization of MXene and its effect on electromagnetic interference shielding: flexible, free-standing and thermally conductive composite from MXene-PAT-poly(-aminophenol)-polyaniline co-polymer.

作者信息

Raagulan Kanthasamy, Braveenth Ramanaskanda, Kim Bo Mi, Lim Kwang Jin, Lee Sang Bok, Kim Miyoung, Chai Kyu Yun

机构信息

Division of Bio-Nanochemistry, College of Natural Sciences, Wonkwang University Iksan 570-749 Korea

Department of Chemical Engineering, Wonkwang University Iksan 570-749 Korea

出版信息

RSC Adv. 2020 Jan 8;10(3):1613-1633. doi: 10.1039/c9ra09522e. eCollection 2020 Jan 7.

DOI:10.1039/c9ra09522e
PMID:35494715
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9048165/
Abstract

MXene and conductive polymers are attractive candidates for electromagnetic interference shielding (EMI) applications. The MXene-PAT-conductive polymer (CP) composites were fabricated by a cost-effective spray coating technique and characterized using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. A new approach has been developed for the synthesis of exfoliated MXene. The MXene-PAT-poly(-aminophenol)-polyaniline co-polymer composite exhibited good electric conductivity (EC) of 7.813 S cm. The composites revealed an excellent thermal properties, which were 0.687 W (m K) thermal conductivity, 2.247 J (g K) heat capacity, 0.282 mm s thermal diffusivity and 1.330 W s m K thermal effusivity. The composites showed 99.99% shielding efficiency and the MXene-PAT-PANI-PpAP composite (MXPATPA) had EMI shielding effectiveness of 45.18 dB at 8.2 GHz. The reduced form of MXene (r-TiCT ) increased the shielding effectiveness (SE) by 7.26% and the absorption (SE) was greatly enhanced by the ant farm like structure. The composites possess excellent thermal and EMI SE characteristics, thus can be applied in areas, such as mobile phones, military utensils, heat-emitting electronic devices, automobiles and radars.

摘要

MXene和导电聚合物是电磁干扰屏蔽（EMI）应用中颇具吸引力的候选材料。通过一种经济高效的喷涂技术制备了MXene-PAT-导电聚合物（CP）复合材料，并使用X射线光电子能谱（XPS）、扫描电子显微镜（SEM）、X射线衍射（XRD）和拉曼光谱对其进行了表征。已开发出一种合成剥离型MXene的新方法。MXene-PAT-聚（对氨基酚）-聚苯胺共聚物复合材料表现出7.813 S cm的良好电导率（EC）。这些复合材料显示出优异的热性能，其热导率为0.687 W/（m·K）、比热容为2.247 J/（g·K）、热扩散率为0.282 mm²/s以及热发射率为1.330 W·s/（m²·K）。这些复合材料的屏蔽效率为99.99%，并且MXene-PAT-PANI-PpAP复合材料（MXPATPA）在8.2 GHz时的EMI屏蔽效能为45.18 dB。还原形式的MXene（r-TiCT ）使屏蔽效能（SE）提高了7.26%，并且类似蚁穴的结构极大地增强了吸收（SE）。这些复合材料具有优异的热性能和EMI SE特性，因此可应用于手机、军事器具、发热电子设备、汽车和雷达等领域。

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