Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Physical Property of Carbon Fiber Reinforced Thermoplastic Polymer based Composites by Repeating Processing of PP Composition

PP 복합 조성물의 반복 가공에 의한 열가소성 폴리머 탄소섬유 강화 복합재료의 물리적 특성 변화 연구

  • Jin-Woo Lee (Korea Institute of Materials Convergence Technology (KIMCO)) ;
  • Jae-Young Lee (Korea Institute of Materials Convergence Technology (KIMCO)) ;
  • Seoung-Bo Shin (Korea Institute of Materials Convergence Technology (KIMCO)) ;
  • Jae-Hyung Park (Korea Institute of Materials Convergence Technology (KIMCO)) ;
  • Hyun-Ju Park (Korea Institute of Materials Convergence Technology (KIMCO)) ;
  • Kyung-Hun Oh (KAIS) ;
  • Jin-Hyuk Huh (KAIS) ;
  • Yun-Hae Kim (Korea Maritime and Ocean University (KMOU)) ;
  • Ji-Eun Lee (Korea Institute of Materials Convergence Technology (KIMCO))
  • 이진우 ;
  • 이재영 ;
  • 심승보 ;
  • 박재형 ;
  • 박현주 ;
  • 오경훈 ;
  • 허진혁 ;
  • 김윤해 ;
  • 이지은
  • Received : 2024.02.15
  • Accepted : 2024.03.31
  • Published : 2024.04.30
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Abstract

Polypropylene (PP), a thermoplastic resin with excellent mechanical, thermal, chemical, and water resistance properties, has been attracting attention due to its economic efficiency and recyclability. However, repeated processing of thermoplastic resins can lead to property degradation, and the point at which quality degradation occurs varies depending on the processing conditions. In this study, we evaluated the performance changes of composite materials with repeated processing by blending PP resin with various additives and conducting extrusion and injection processes repeatedly. In addition, we evaluated the mechanical properties of composite materials to evaluate the effect of MFI value change during repeated processing on fiber impregnation in composite material processing.

경제성과 가공 시 용이성 등의 장점을 가지는 합성수지는 자연상태에서 분해되지 않고 환경오염을 야기 시키는 문제를 가진다. 이러한 문제를 해결하기 위해 재활용이 가능한 열가소성 수지가 주목되고 있고 그 중 경제성이 뛰어난 폴리프로필렌(PP)에 대한 관심이 높아지고 있다. PP의 경우 기계적 특성 및 열안정성 등과 재활용성이 뛰어나다. 하지만 다수의 문헌에서 열가소성 수지의 반복 가공에 따라 물성의 저하가 일어난다는 것을 확인 할 수 있으며 가공 조건에 따라 품질의 저하가 발생하는 시점이 다르다는 것을 확인할 수 있다. 따라서 본 연구에서는 PP 수지에 여러 첨가 성분을 블렌딩하여 복합 조성물 제조 시 반복 공정에 의한 성능 변화를 평가하기 위해 압출 공정 및 사출 공정을 반복 진행하여 기계적 특성 및 열적 특성을 평가하고자 한다. 또한 반복 공정 시 MFI 값 변화에 따라 복합재료 공정 시 섬유의 함침에 어떤 영향을 주는지에 대해 평가하기 위해 복합재료의 기계적 물성을 평가하고자 한다.

Keywords

Acknowledgement

본 연구는 산업통장자원부의 클린팩토리 기술개발 사업 [20015210] 및 기계장비산업기술개발사업[RS-2024-00416887]의 지원에 의한 연구과제로 수행된 것이며, 지원에 대해 진심으로 감사드립니다.

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