Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Thermal Decomposition and Mechanical Properties of Polycarbonate/ABS Blends Prepared by High Shear Rate Processing

고속전단에 의한 폴리카보네이트/ABS 블렌드의 열분해 및 기계적 특성 연구

  • Yoo, Jae Jung (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Yong, Da Kyoung (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University) ;
  • Lee, Han Ki (Department of Polymer Materials Research Team, Automotive Reserch & Development, Hyndai Motor Group) ;
  • Kim, Dae Sik (Department of Polymer Materials Research Team, Automotive Reserch & Development, Hyndai Motor Group) ;
  • Lee, Hyung Il (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Kim, Sun Hong (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Lee, Kee Yoon (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Lee, Seung Goo (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University)
  • 유재정 (충남대학교 유기소재.섬유시스템공학과) ;
  • 용다경 (충남대학교 유기소재.섬유시스템공학과) ;
  • 이한기 (Hyundai Motor Group, 자동차부문 연구개발 본부, 고분자재료연구팀) ;
  • 김대식 (Hyundai Motor Group, 자동차부문 연구개발 본부, 고분자재료연구팀) ;
  • 이형일 (충남대학교 고분자공학과) ;
  • 김선홍 (충남대학교 고분자공학과) ;
  • 이기윤 (충남대학교 고분자공학과) ;
  • 이승구 (충남대학교 유기소재.섬유시스템공학과)
  • Received : 2013.12.23
  • Accepted : 2014.03.05
  • Published : 2014.07.25
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Abstract

Polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) blends were prepared using a high shear extruder to investigate their thermal decomposition and mechanical properties with shear rate and shear time. In this experiment, high shear rate, from 1000 to 3000 rpm, in blending process was applied for 10 to 40 sec, respectively. At high shear rate over than 2000 rpm, the initial decomposition temperature was dropped significantly compared to a compounded sample because of thermal decomposition of the blend by high shear. Consequently, high shear processing gave an important effect on the mechanical and thermal properties of the PC/ABS blend. In particular, elongation of the blend decreased significantly with shear rate.

Polycarbonate(PC)/acrylonitrile-butadiene-styrene(ABS) 블렌드를 고속전단압출성형기로 1000 rpm 이상의 스크류 속도로 압출하여 전단속도와 전단시간에 따른 PC/ABS 블렌드의 열분해와 기계적 특성을 조사하였다. 고속전단 조건으로 스크류 회전속도를 1000에서 3000 rpm 범위에서 조절하였고, 전단부하시간은 10에서 40초로 변화를 주었다. 그 결과, 2000 rpm 이상의 고속전단을 통해 얻어진 시편의 경우, 고분자의 열분해의 발생으로 열분해 시작 온도가 낮아졌다. 스크류 회전속도와 전단부하시간에 따라 열분해에 의하여 시편의 인장강도와 신율이 낮아지는 결과를 얻었다. 이러한 PC/ABS 블렌드의 고속전단 조건에 따라 기계적 특성이 크게 변화하였으며 특히, 신율이 고속전단에 크게 영향을 받았다.

Keywords

Acknowledgement

Supported by : 현대 NGV

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