Highly Deformable Porous Electromagnetic Wave Absorber Based on Ethylene-Propylene-Diene Monomer/Multiwall Carbon Nanotube Nanocomposites

被引：17

作者：

Bizhani, Hasti ^{[1
]}

Katbab, Ali Asghar ^{[1
]}

Lopez-Hernandez, Emil ^{[2
]}

Miguel Miranda, Jose ^{[3
]}

Verdejo, Raquel ^{[2
]}

机构：

[1] Amirkabir Univ Technol, Dept Polymer & Color Engn, Hafez Ave, Tehran 1591634311, Iran

[2] Inst Polymer Sci & Technol ICTP CSIC, C Juan de la Cierva 3, Madrid 28006, Spain

[3] Univ Complutense Madrid, Fac Fis, Dept Estruct Mat, Madrid 28040, Spain

来源：

POLYMERS | 2020年 / 12卷 / 04期

关键词：

EPDM; ethylene-propylene-diene monomer; multiwall carbon nanotubes; foams; electromagnetic interference; EMI shielding; EMI SHIELDING PROPERTIES; ELECTRICAL-PROPERTIES; COMPOSITE FOAMS; CONDUCTIVITY; PERFORMANCE; BEHAVIOR; NETWORK; RUBBER;

D O I：

10.3390/polym12040858

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The need for electromagnetic interference (EMI) shields has risen over the years as the result of our digitally and highly connected lifestyle. This work reports on the development of one such shield based on vulcanized rubber foams. Nanocomposites of ethylene-propylene-diene monomer (EPDM) rubber and multiwall carbon nanotubes (MWCNTs) were prepared via hot compression molding using a chemical blowing agent as foaming agent. MWCNTs accelerated the cure and led to high shear-thinning behavior, indicative of the formation of a 3D interconnected physical network. Foamed nanocomposites exhibited lower electrical percolation threshold than their solid counterparts. Above percolation, foamed nanocomposites displayed EMI absorption values of 28-45 dB in the frequency range of the X-band. The total EMI shielding efficiency of the foams was insignificantly affected by repeated bending with high recovery behavior. Our results highlight the potential of cross-linked EPDM/MWCNT foams as a lightweight EM wave absorber with high flexibility and deformability.

引用

页数：14

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