Facile Preparation of Electromagnetic Interference Shielding Materials Enabled by Constructing Interconnected Network of Multi-walled Carbon Nanotubes in a Miscible Polymeric Blend

Qi-Yan Zhang; Han-Song Li; Bao-Hua Guo; Zhao-Xia Guo; Jian Yu

doi:10.1007/s10118-020-2370-5

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Facile Preparation of Electromagnetic Interference Shielding Materials Enabled by Constructing Interconnected Network of Multi-walled Carbon Nanotubes in a Miscible Polymeric Blend

ARTICLE | Updated：2019-12-16

- Facile Preparation of Electromagnetic Interference Shielding Materials Enabled by Constructing Interconnected Network of Multi-walled Carbon Nanotubes in a Miscible Polymeric Blend
- Chinese Journal of Polymer Science Vol. 38, Issue 6, Pages: 593-598(2020)
- Affiliations：
  
  Key Laboratory of Advanced Materials (Ministry of Education), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Author bio：
  
  guozx@mail.tsinghua.edu.cn (Z.X.G.)
  yujian03@mail.tsinghua.edu.cn (J.Y.)
- Funds：
- DOI：10.1007/s10118-020-2370-5
  CLC：
- Received：21 August 2019，
  
  Revised：2019-10-23，
  
  Accepted：11 November 2019，
  
  Online First：16 December 2019，
  
  Published：2020-06
- Accepted：
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Zhang, Q. Y.; Li, H. S.; Guo, B. H.; Guo, Z. X.; Yu, J. Facile preparation of electromagnetic interference shielding materials enabled by constructing interconnected network of multi-walled carbon nanotubes in a miscible polymeric blend. Chinese J. Polym. Sci. 2020, 38, 593–598

Qi-Yan Zhang, Han-Song Li, Bao-Hua Guo, et al. Facile Preparation of Electromagnetic Interference Shielding Materials Enabled by Constructing Interconnected Network of Multi-walled Carbon Nanotubes in a Miscible Polymeric Blend[J]. Chinese Journal of Polymer Science, 2020, 38(6): 593-598.
Zhang, Q. Y.; Li, H. S.; Guo, B. H.; Guo, Z. X.; Yu, J. Facile preparation of electromagnetic interference shielding materials enabled by constructing interconnected network of multi-walled carbon nanotubes in a miscible polymeric blend. Chinese J. Polym. Sci. 2020, 38, 593–598 DOI： 10.1007/s10118-020-2370-5.

Qi-Yan Zhang, Han-Song Li, Bao-Hua Guo, et al. Facile Preparation of Electromagnetic Interference Shielding Materials Enabled by Constructing Interconnected Network of Multi-walled Carbon Nanotubes in a Miscible Polymeric Blend[J]. Chinese Journal of Polymer Science, 2020, 38(6): 593-598. DOI： 10.1007/s10118-020-2370-5.

摘要

Abstract

Electromagnetic interference (EMI) shielding materials are in great demand in electronic equipment and our surrounding environment to resist the increasing serious radiation pollution. Compared with their metal counterparts

conductive polymer composites (CPCs) have unique advantages of lightweight

corrosive resistance

low cost

and excellent processability

and are therefore an ideal choice for developing high-performance EMI shielding materials. However

CPCs based EMI shielding materials are limited to high filler loading

which caused poor mechanical properties and processability. Here

we demonstrate a facile and highly scalable approach to develop high-performance EMI shielding materials with low filler loading by using miscible poly(phenylene oxide)/polystyrene (PPO/PS) blend as the matrix. In contrast to PS/carbon nanotubes (CNTs) composites

PPO/PS/CNTs composites show much higher EMI shielding effectiveness caused by good dispersion of CNTs and highly interconnected conductive network. An excellent EMI shieling effectiveness of 23−25 dB is achieved for PPO/PS/10%CNTs composites with a thickness of only 375 μm

which is superior to most of reported polymer/CNTs composites prepared by melt-compounding. In addition

the results show that although absorption is the major shielding mechanism

the contribution of reflection is also important and closely related to the connectivity of conductive network

as well as the electrical conductivity of the CPCs.

关键词

Keywords

references

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