Lightweight, multifunctional microcellular PMMA/Fe3O4@MWCNTs nanocomposite foams with efficient electromagnetic interference shielding

Hongming Zhang; Guangcheng Zhang; Jiantong Li; Xun Fan; Zhanxin Jing; Jianwei Li; Xuetao Shi

doi:10.1016/j.compositesa.2017.05.009

Lightweight, multifunctional microcellular PMMA/Fe₃O₄@MWCNTs nanocomposite foams with efficient electromagnetic interference shielding

Hongming Zhang, Guangcheng Zhang, Jiantong Li, Xun Fan, Zhanxin Jing, Jianwei Li, Xuetao Shi

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

249 Scopus citations

Abstract

Lightweight and multifunctional PMMA/Fe₃O₄@MWCNTs composite foams with density of 0.22–0.38 g/cm³ were fabricated by supercritical carbon dioxide (ScCO₂) foaming process. Benefitting from the existence of microcellular structure and the Fe₃O₄@MWCNTs hybrids, the specific Electromagnetic interference shielding effectiveness (EMI SE) of obtained PMMA/Fe₃O₄@MWCNTs foams was significantly enhanced. The resulting foams with hybrids loading of 7 wt% displayed excellent specific EMI SE of 50 dB/(g/cm³) over the X-band. Furthermore, the EMI shielding mechanisms of the porous materials were discussed and it suggested that the dominant contribution to EMI SE was absorption. Meanwhile, the high-strength composite foams also exhibited superparamagnetic behavior and low thermal conductivity of 0.080–0.142 W/(m k). In this work, we provide a feasible way to produce lightweight and multifunctional PMMA/Fe₃O₄@MWCNTs foams with superior EMI shielding performance to apply in the electronics and aerospace industries.

Original language	English
Pages (from-to)	128-138
Number of pages	11
Journal	Composites Part A: Applied Science and Manufacturing
Volume	100
DOIs	https://doi.org/10.1016/j.compositesa.2017.05.009
State	Published - 1 Sep 2017

Keywords

A. Polymer-matrix composites (PMCs)
B. Electrical properties
B. Microstructure
E. Foaming

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10.1016/j.compositesa.2017.05.009

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title = "Lightweight, multifunctional microcellular PMMA/Fe3O4@MWCNTs nanocomposite foams with efficient electromagnetic interference shielding",

abstract = "Lightweight and multifunctional PMMA/Fe3O4@MWCNTs composite foams with density of 0.22–0.38 g/cm3 were fabricated by supercritical carbon dioxide (ScCO2) foaming process. Benefitting from the existence of microcellular structure and the Fe3O4@MWCNTs hybrids, the specific Electromagnetic interference shielding effectiveness (EMI SE) of obtained PMMA/Fe3O4@MWCNTs foams was significantly enhanced. The resulting foams with hybrids loading of 7 wt% displayed excellent specific EMI SE of 50 dB/(g/cm3) over the X-band. Furthermore, the EMI shielding mechanisms of the porous materials were discussed and it suggested that the dominant contribution to EMI SE was absorption. Meanwhile, the high-strength composite foams also exhibited superparamagnetic behavior and low thermal conductivity of 0.080–0.142 W/(m k). In this work, we provide a feasible way to produce lightweight and multifunctional PMMA/Fe3O4@MWCNTs foams with superior EMI shielding performance to apply in the electronics and aerospace industries.",

keywords = "A. Polymer-matrix composites (PMCs), B. Electrical properties, B. Microstructure, E. Foaming",

author = "Hongming Zhang and Guangcheng Zhang and Jiantong Li and Xun Fan and Zhanxin Jing and Jianwei Li and Xuetao Shi",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2017",

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doi = "10.1016/j.compositesa.2017.05.009",

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T1 - Lightweight, multifunctional microcellular PMMA/Fe3O4@MWCNTs nanocomposite foams with efficient electromagnetic interference shielding

AU - Zhang, Hongming

AU - Zhang, Guangcheng

AU - Li, Jiantong

AU - Fan, Xun

AU - Jing, Zhanxin

AU - Li, Jianwei

AU - Shi, Xuetao

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Lightweight and multifunctional PMMA/Fe3O4@MWCNTs composite foams with density of 0.22–0.38 g/cm3 were fabricated by supercritical carbon dioxide (ScCO2) foaming process. Benefitting from the existence of microcellular structure and the Fe3O4@MWCNTs hybrids, the specific Electromagnetic interference shielding effectiveness (EMI SE) of obtained PMMA/Fe3O4@MWCNTs foams was significantly enhanced. The resulting foams with hybrids loading of 7 wt% displayed excellent specific EMI SE of 50 dB/(g/cm3) over the X-band. Furthermore, the EMI shielding mechanisms of the porous materials were discussed and it suggested that the dominant contribution to EMI SE was absorption. Meanwhile, the high-strength composite foams also exhibited superparamagnetic behavior and low thermal conductivity of 0.080–0.142 W/(m k). In this work, we provide a feasible way to produce lightweight and multifunctional PMMA/Fe3O4@MWCNTs foams with superior EMI shielding performance to apply in the electronics and aerospace industries.

AB - Lightweight and multifunctional PMMA/Fe3O4@MWCNTs composite foams with density of 0.22–0.38 g/cm3 were fabricated by supercritical carbon dioxide (ScCO2) foaming process. Benefitting from the existence of microcellular structure and the Fe3O4@MWCNTs hybrids, the specific Electromagnetic interference shielding effectiveness (EMI SE) of obtained PMMA/Fe3O4@MWCNTs foams was significantly enhanced. The resulting foams with hybrids loading of 7 wt% displayed excellent specific EMI SE of 50 dB/(g/cm3) over the X-band. Furthermore, the EMI shielding mechanisms of the porous materials were discussed and it suggested that the dominant contribution to EMI SE was absorption. Meanwhile, the high-strength composite foams also exhibited superparamagnetic behavior and low thermal conductivity of 0.080–0.142 W/(m k). In this work, we provide a feasible way to produce lightweight and multifunctional PMMA/Fe3O4@MWCNTs foams with superior EMI shielding performance to apply in the electronics and aerospace industries.

KW - A. Polymer-matrix composites (PMCs)

KW - B. Electrical properties

KW - B. Microstructure

KW - E. Foaming

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U2 - 10.1016/j.compositesa.2017.05.009

DO - 10.1016/j.compositesa.2017.05.009

M3 - 文章

AN - SCOPUS:85019269126

SN - 1359-835X

VL - 100

SP - 128

EP - 138

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

ER -

Lightweight, multifunctional microcellular PMMA/Fe₃O₄@MWCNTs nanocomposite foams with efficient electromagnetic interference shielding

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