Interlayer controllable of hierarchical MWCNTs@C@FexOy cross-linked composite with wideband electromagnetic absorption performance

被引：118

作者：

Wu, Guanglei ^{[1
,2
]}

Jia, Zirui ^{[1
]}

Zhou, Xinfeng ^{[1
]}

Nie, Guozheng ^{[1
]}

Lv, Hualiang ^{[2
]}

机构：

[1] Qingdao Univ, Coll Mat Sci & Engn, Inst Mat Energy & Environm, State Key Lab Biofibers & Ecotext, Qingdao 266071, Shandong, Peoples R China

[2] NIMS, Int Ctr Mat Nanoarchitechton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2020年 / 128卷 / 128期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Magnetic MWCNTs; Hierarchical structure; Multi-interfaces; Graphitization-tunable; ENHANCED MICROWAVE-ABSORPTION; WAVE ABSORPTION; HOLLOW MICROSPHERES; ABSORBING PROPERTY; LOW-FREQUENCY; FABRICATION; LIGHTWEIGHT; GRAPHENE; SPHERES; NANOCOMPOSITES;

D O I：

10.1016/j.compositesa.2019.105687

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic multi-walled carbon nanotube (MWCNTs) hybrids are a promising high-performance electromagnetic (EM) absorber with the merits of wideband, thin thickness and lightweight etc. Even so, it remains a challenge to achieve a wideband absorption under a thickness (d < 1.5 mm), simultaneously, owning to some limitations (e.g. inverse radiation, poor polarization and magnetic loss etc). To overcome it, MWCNTs@C@FexOy(Fe/alpha-Fe2O3) was developed here, using a layer-by-layer method to decorate MWCNTs with benefited amorphous carbon (C) and magnetic component (FexOy: Fe/alpha-Fe2O3), aiming to optimize the EM performance. The result reveals that the effective absorption region (denoted as: f(E)) covers 4.6 GHz within a thickness of 1.0 mm only. The mechanism for the exceptionally EM performance is proposed by investigating the influences of components, structures, especially the graphitization-tunable of interlayer carbon layer. The utilization of component modifying strategy on MWCNTs is a greatly of significance in development of lightweight, wideband electromagnetic absorber.

引用

页数：10

共 74 条

[1] Tuning the Shape Anisotropy and Electromagnetic Screening Ability of Ultrahigh Magnetic Polymer and Surfactant-Capped FeCo Nanorods and Nanocubes in Soft Conducting Composites [J].