Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Mechanical and Electrical Properties of Polyurethane Hybrid Nanocomposites Containing MWNT and Graphite as Conducting Nanoparticles

MWNT와 Graphite 전도성 나노입자를 함유한 폴리우레탄 하이브리드 나노복합체의 기계적 물성 및 전기적 특성 평가

  • Kang, Chan Sol (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Jee, Min Ho (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Baik, Doo Hyun (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
  • 강찬솔 (충남대학교 유기소재.섬유시스템공학과) ;
  • 지민호 (충남대학교 유기소재.섬유시스템공학과) ;
  • 백두현 (충남대학교 유기소재.섬유시스템공학과)
  • Received : 2012.05.08
  • Accepted : 2012.06.06
  • Published : 2012.06.30
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Abstract

The synergistic effects of multi-walled carbon nanotubes (MWNT) and graphite on the structural features and mechanical and electrical properties of polyurethane (PU) nanocomposites were investigated as functions of filler content. SEM images of the PU/hybrid nanocomposite exhibit that the MWNTs and graphite are dispersed well in the PU matrix and form an interconnected network structure. Accordingly, the tensile strength and strain-at-break of the PU/hybrid nanocomposites were much higher than those of the PU/MWNT and PU/graphite nanocomposites at the same filler content. In addition, it is found that the PU/hybrid nanocomposite containing 1.25 wt% MWNTs and 1.25 wt% graphite shows the electrical conductivity of $1.2{\times}10^{-4}S/cm$, which is higher by three orders than that of PU/graphite nanocomposite containing 20.0 wt% graphite. The highly improved mechanical and electrical properties of the PU/hybrid nanocomposite are thought to be due to the interconnected network structure of MWNTs and graphite in the PU matrix.

Keywords

Acknowledgement

Supported by : 윈플러스

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