Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Evaluation of Impregnating and Mechanical Properties for Glass Fiber/Polycarbonate Composites Depending on Molecular Weight of Matrix

유리섬유/폴리카보네이트 복합재료의 기지 분자량에 따른 함침 및 기계적 물성 평가

  • Kim, Neul-Sae-Rom (R&D Dept, LARGE Co., Ltd.) ;
  • Jang, Yeong-Jin (R&D Dept, LARGE Co., Ltd.) ;
  • Lee, Eun-Soo (Korea Dyeing and Finishing Technology Institute) ;
  • Kwon, Dong-Jun (Research Institute for Green Energy Convergence Technology (RIGET), Gyeongsang National University) ;
  • Yang, Seong Baek (Department of Advanced Organic Materials Science and Engineering, Kyungpook National University) ;
  • Lee, Jungeon (Department of Advanced Organic Materials Science and Engineering, Kyungpook National University) ;
  • Yeum, Jeong Hyun (Department of Advanced Organic Materials Science and Engineering, Kyungpook National University)
  • Received : 2020.11.02
  • Accepted : 2021.02.05
  • Published : 2021.02.28
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Abstract

Fiber-reinforced thermoplastic composites are applied to transport industries to lightweight of body, and applications will be expanded gradually. In this study, the impregnation and mechanical properties of continuous glass fiber (GF) reinforced polycarbonate (PC) composites were evaluated with different molecular weights of PC. The continuous GF reinforced PC composite were prepared by using GF fabric and PC film via continuous compression molding method. The melting flow index and tensile strength of PC matrix were evaluated with different molecular weights. Mechanical properties (tensile, flexural, and compressive) and pore rate of GF/PC composite were evaluated with different molecular weights of PC. The fracture behavior was analyzed to fracture surface of GF/PC composite using FE-SEM images. As these results, it was condition of representing the best mechanical property that the GF/PC composite was prepared by using PC of 20,000 g/mol as matrix.

열가소성 섬유강화 복합재료는 수송용 기기의 경량화 소재로써 적용 분야가 확대되고 있다. 본 연구에서는 분자량이 다른 폴리카보네이트(PC)를 이용하여 연속섬유 강화 유리섬유(GF)/폴리카보네이트(PC) 복합소재의 함침성 및 기계적 물성에 대한 평가를 진행하였다. GF 직물과 PC 필름을 제조한 후, 이를 이용하여 연속가압성형법으로 연속섬유 강화 GF/PC 복합재 평판을 제조하였다. PC 분자량에 따른 용융지수를 측정 및 평가하였고, GF 제직물 강화 GF/PC 복합재료의 인장강도, 굴곡강도, 압축강도 및 기공체적률을 평가하였다. 전계방사형 주사전자현미경을 이용하여 인장파괴된 GF/PC 복합재료의 형태를 분석하여 파괴거동을 확인하였다. 분자량이 20,000일 때 최적의 기계적 특성이 발현되는 것을 확인하였다.

Keywords

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