Original Article
  • A Study on Processing-Structure-Property Relationships of Extruded Carbon Nanomaterial-Polypropylene Composite Films
  • Byeong-Joo Kim*, Biplab K. Deka**, Gu-Hyuk Kang*, Sang-Ha Hwang*, Young-Bin Park**†, In-Chan Jeong***, Dong-Hyuk Choi***, Dong-Il Son***
  • * 울산과학기술대학교 기계 및 신소재공학부 대학원 ** 울산과학기술대학교 기계 및 신소재공학부 기계공학전공 **† 울산과학기술대학교 기계 및 신소재공학부 기계공학전공, Corresponding author (E-mail: ypark@unist.ac.kr) *** 동국실업 주식회사
  • 탄소나노튜브 및 그래핀 나노플레이트 폴리프로필렌 복합재 필름 압출 및 물성 평가
  • 김병주* , Biplab K. Deka** , 강구혁* , 황상하* , 박영빈**† , 정인찬*** , 최동혁*** , 손동일***
Abstract
ABSTRACT: Polypropylene films reinforced with multi-walled carbon nanotubes and exfoliated graphite nanoplatelets were fabricated by extrusion, and the effects of filler type and take-up speed on the mechanical properties and microstructure of composite films were investigated. Differential scanning calorimetry revealed that the addition of carbon nanomaterials resulted in increased degree of crystallinity. However, increasing the take-up speed reduced the degree of crystallinity, which indicates that tension-induced orientations of polymer chains and carbon nanomaterials and the loss of degree of crystallinity due to rapid cooling at high take-up speeds act as competing mechanisms. These observations were in good agreement with tensile properties, which are governed by the degree of crystallinity, where the C-grade exfoliated graphite nanoplatelet with a surface area of 750 m2/g showed the greatest reinforcing effect among all types of carbon nanomaterials used. Scanning electron microscopy was employed to observe the carbon nanomaterial dispersion and orientation, respectively.

초 록: 본 연구에서는 폴리프로필렌과 다양한 탄소나노소재를 사용하여 제조한 복합재의 압출방향 및 권취속도 에 따른 기계적 물성과 결정화도에 대한 연구를 수행하였다. 폴리프로필렌에 탄소나노소재를 균일하게 분산시키 기 위해 미분쇄기에 폴리프로필렌 분말(

Keywords: carbon nanotube, exfoliated graphite nanoplatelet, nanocomposite, film extrusion, degree of crystallinity, take-up speed

Keywords: 탄소나노튜브, 그래핀 나노플레이트, 나노복합 재, 필름압출, 결정화도, 권취속도

This Article

  • 2013; 26(4): 254-258

    Published on Aug 31, 2013