Flexural, electrical, thermal and electromagnetic interference shielding properties of xGnP and carbon nanotube filled epoxy hybrid nanocomposites

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 24권
ㆍ저자명 : Young Sil Lee, Yeon Ho Park, Kwan Han Yoon

목차

Abstract
1. Introduction
2. Experimental
2.1. Materials
2.2. Preparation of epoxy composites
2.3. Characterization
3. Results and Discussion
3.1. Microstructures of carbon nanofiller/epoxycomposites
3.2. Flexural properties
3.3. Electrical, thermal, and EMI shieldingproperties
4. Conclusions
Conflict of Interest
Acknowledgements
References

영어 초록

The microstructure, flexural properties, electrical conductivity, thermal conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) of epoxy composites filled with multi-walled carbon nanotubes (CNTs), exfoliated graphite nanoplatelets (xGnPs) and CNT-xGnP hybrid filler were investigated. The EMI SE of the CNT-xGnP hybrid composite was higher than 25 dB at 100 MHz while that of the xGnP based composite was almost zero. The flexural modulus of the CNT-xGnP based epoxy composite continuously increased to 3.32 GPa with combined filler content up to 10 wt% while that of the CNT based epoxy composites slightly decreased to 1.96 GPa at 4 wt% CNT, and dropped to 1.57 GPa at 5 wt% loading, which is lower than that of epoxy. The CNT and CNT-xGnP samples had the same EMI SE at the same surface resistivity, because samples with the same surface conductivity have the same amount of the charge carriers.

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