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Investigation of Mechanical and Electrical Properties of Hybrid Composites Reinforced with Carbon Nanotubes and Micrometer-Sized Silica Particles

탄소나노튜브 및 실리카 입자로 강화된 하이브리드 복합재료의 기계적, 전기적 물성에 관한 연구

  • Oh, Yun (Division of Mechanical Design Engineering, Chonbuk Nat'l Univ.) ;
  • You, Byeong Il (Division of Mechanical Design Engineering, Chonbuk Nat'l Univ.) ;
  • Ahn, Ji Ho (Division of Mechanical Design Engineering, Chonbuk Nat'l Univ.) ;
  • Lee, Gyo Woo (Division of Mechanical Design Engineering, Chonbuk Nat'l Univ.)
  • 오윤 (전북대학교 기계설계공학부) ;
  • 유병일 (전북대학교 기계설계공학부) ;
  • 안지호 (전북대학교 기계설계공학부) ;
  • 이교우 (전북대학교 기계설계공학부)
  • Received : 2016.06.09
  • Accepted : 2016.09.01
  • Published : 2016.12.01

Abstract

In this study, to enhance the electrical insulation of composite specimens in addition to the improved mechanical properties, the epoxy composite were reinforced with carbon nanotubes and silica particles. Tensile strength, Young's modulus, dynamic mechanical behavior, and electrical resistivity of the specimens were measured with varied contents of the two fillers. The mechanical and electrical properties were discussed, and the experimental results related to the mechanical properties of the specimens were compared with those from several micromechanics models. The hybrid composites specimens with 0.6 wt% of carbon nanotubes and 50 wt% of silica particles showed improved mechanical properties, with increase in tensile strength and Young's modulus up to 11% and 35%, respectively, with respect to those of the baseline specimen. The electrical conductivity of the composite specimens with carbon nanotubes filler also improved. Further, the electrical insulation of the hybrid composites specimens with the two fillers improved in addition to the improvement in mechanical properties.

Keywords

Hybrid Composites;Epoxy;Carbon Nanotubes;Silica Particles;Tensile Strength;Young's Modulus;Dynamic Mechanical Analysis;Electrical Resistivity;Electrical Conductivity;Micromechanics Models

Acknowledgement

Supported by : 한국연구재단, 한국산업기술평가원

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