Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Study on the Manufacturing and Mechanical Properties of the PA66/EPDM/PP Composites for Enhanced Low Temperature Fracture Resistances

저온 내충격성 향상을 위한 PA66/EPDM/PP 복합체 제조와 기계적 특성 연구

  • Lee, Tae-Sik (Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Yoon, Chang-Rok (Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Bang, Dae-Suk (Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Ahn, Dae-Young (Dae-Chang Enpla Co. Ltd.) ;
  • Kye, Hyoung-San (Department of Design & Materials, Mokwon University) ;
  • Shin, Kyung-Chul (Department of Polymer Science & Engineering, Chungju National University)
  • 이태식 (금오공과대학교 고분자공학) ;
  • 윤창록 (금오공과대학교 고분자공학) ;
  • 방대석 (금오공과대학교 고분자공학) ;
  • 안대영 (대창엔프라(주)) ;
  • 계형산 (목원대학교 디자인소재학과) ;
  • 신경철 (충주대학교 나노고분자공학과)
  • Published : 2009.06.30
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Abstract

PA66/EPDM/PP-g-MA and PA66/EPDM-g-MA/PP-g-MA composites were manufactured by a modular intermeshing twin screw extruder for enhanced low temperature impact resistance with different content of PP-g-MA. The results showed that composite containing 90 wt% of PA66, 8 wt% of EPDM-g-MA, and 2 wt% of PP-g-MA has a optimum value in the thermal and mechanical properties. The characteristics of the composites were analyzed by TGA, DSC, and SEM. From above results, we established that the low interfacial strength and the impact resistance at low temperature shown in a pre-existing PP/EPDM composite were enhanced by grafting with compatibilizer such as maleic anhydride. These results show the possibility of local manufacturing process and cost down with optimum screw configuration for best mixing quality in the twin screw extruder.

모듈라 치합형 동방향 이축 스크류식 압출기(modular intermeshing co-rotating twin screw extruder)를 이용하여 저온 내 충격성 향상을 위해 PA66/EPDM/PP-g-MA 및 PA66/EPDM-g-MA/PP-g-MA 복합체를 각 성분 wt%를 변화하여 제조하였다. 그 결과 이들 복합체 중에서 PA66/EPDM-g-MA/PP-g-MA의 wt%가 90/8/2인 복합체가 다른 복합체들 보다 열적, 기계적으로 우수한 결과를 나타내었다. 그리고 열중량분석기(Thermogravimetric Analysis), 시차주사열량계(Differential Scanning Calorimeter)를 이용하여 열적 특성, 주사 전자현미경(Scanning Electron Microcsopy)을 이용하여 형태학적 변화를 분석하였다. 본연구를 통하여 기존 PA66/EPDM composite의 단점인 낮은 계면력과 저온 내충격성을 향상 시켰으며, 최적의 mixing효과를 위한 screw configuration에 따른 압출 공정 확립과 PA66/EPDM composite 생산 공정 국산화 및 원가절감의 효과를 가져왔다.

Keywords

References

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