Compacting CNT sponge to achieve larger electromagnetic interference shielding performance

Hui Mei; Xing Zhao; Junchao Xia; Fei Wei; Daoyang Han; Shanshan Xiao; Laifei Cheng

doi:10.1016/j.matdes.2018.02.047

Compacting CNT sponge to achieve larger electromagnetic interference shielding performance

Hui Mei, Xing Zhao, Junchao Xia, Fei Wei, Daoyang Han, Shanshan Xiao, Laifei Cheng

School of Materials Sience and Engineering

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

37 Scopus citations

Abstract

The present study reports a simple route for the synthesis of 3D carbon nanotube (CNT) sponges by vacuum assisted filtration of CNT bundles of variable compaction ratios and its epoxy (EP) composites with superior electromagnetic interference (EMI) shielding performance. The electrical and mechanical properties of CNT sponge/EP composites were investigated and findings enabled identification of a sponge compaction ratio of 70% as optimum for the improvement of the electrical conductivity and EMI shielding effectiveness of the material, by 138 and 41%, respectively, compared to uncompacted samples. Mechanical properties of the composites were also enhanced with the yield strength and elastic modulus of the composite of a compaction ratio of 70% improved by 17 and 25%, respectively compared to pure epoxy. These results indicate that CNT sponge with a higher compaction ratio is a potential filler for mechanically strong and high-performance EMI shielding nanocomposites.

Original language	English
Pages (from-to)	323-330
Number of pages	8
Journal	Materials and Design
Volume	144
DOIs	https://doi.org/10.1016/j.matdes.2018.02.047
State	Published - 15 Apr 2018

Keywords

CNT sponge
Electrical conductivity
Electromagnetic shielding effectiveness
Mechanical property
Polymer composites

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10.1016/j.matdes.2018.02.047

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title = "Compacting CNT sponge to achieve larger electromagnetic interference shielding performance",

abstract = "The present study reports a simple route for the synthesis of 3D carbon nanotube (CNT) sponges by vacuum assisted filtration of CNT bundles of variable compaction ratios and its epoxy (EP) composites with superior electromagnetic interference (EMI) shielding performance. The electrical and mechanical properties of CNT sponge/EP composites were investigated and findings enabled identification of a sponge compaction ratio of 70% as optimum for the improvement of the electrical conductivity and EMI shielding effectiveness of the material, by 138 and 41%, respectively, compared to uncompacted samples. Mechanical properties of the composites were also enhanced with the yield strength and elastic modulus of the composite of a compaction ratio of 70% improved by 17 and 25%, respectively compared to pure epoxy. These results indicate that CNT sponge with a higher compaction ratio is a potential filler for mechanically strong and high-performance EMI shielding nanocomposites.",

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author = "Hui Mei and Xing Zhao and Junchao Xia and Fei Wei and Daoyang Han and Shanshan Xiao and Laifei Cheng",

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doi = "10.1016/j.matdes.2018.02.047",

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T1 - Compacting CNT sponge to achieve larger electromagnetic interference shielding performance

AU - Mei, Hui

AU - Zhao, Xing

AU - Xia, Junchao

AU - Wei, Fei

AU - Han, Daoyang

AU - Xiao, Shanshan

AU - Cheng, Laifei

PY - 2018/4/15

Y1 - 2018/4/15

N2 - The present study reports a simple route for the synthesis of 3D carbon nanotube (CNT) sponges by vacuum assisted filtration of CNT bundles of variable compaction ratios and its epoxy (EP) composites with superior electromagnetic interference (EMI) shielding performance. The electrical and mechanical properties of CNT sponge/EP composites were investigated and findings enabled identification of a sponge compaction ratio of 70% as optimum for the improvement of the electrical conductivity and EMI shielding effectiveness of the material, by 138 and 41%, respectively, compared to uncompacted samples. Mechanical properties of the composites were also enhanced with the yield strength and elastic modulus of the composite of a compaction ratio of 70% improved by 17 and 25%, respectively compared to pure epoxy. These results indicate that CNT sponge with a higher compaction ratio is a potential filler for mechanically strong and high-performance EMI shielding nanocomposites.

AB - The present study reports a simple route for the synthesis of 3D carbon nanotube (CNT) sponges by vacuum assisted filtration of CNT bundles of variable compaction ratios and its epoxy (EP) composites with superior electromagnetic interference (EMI) shielding performance. The electrical and mechanical properties of CNT sponge/EP composites were investigated and findings enabled identification of a sponge compaction ratio of 70% as optimum for the improvement of the electrical conductivity and EMI shielding effectiveness of the material, by 138 and 41%, respectively, compared to uncompacted samples. Mechanical properties of the composites were also enhanced with the yield strength and elastic modulus of the composite of a compaction ratio of 70% improved by 17 and 25%, respectively compared to pure epoxy. These results indicate that CNT sponge with a higher compaction ratio is a potential filler for mechanically strong and high-performance EMI shielding nanocomposites.

KW - CNT sponge

KW - Electrical conductivity

KW - Electromagnetic shielding effectiveness

KW - Mechanical property

KW - Polymer composites

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DO - 10.1016/j.matdes.2018.02.047

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SN - 0264-1275

VL - 144

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EP - 330

JO - Materials and Design

JF - Materials and Design

ER -

Compacting CNT sponge to achieve larger electromagnetic interference shielding performance

Abstract

Keywords

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