Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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A New Mixing Method of SiC Nanoparticle Reinforced Epoxy Composites with Large Concentration of SiC Nanoparticle

대용량 SiC 나노입자 강화 에폭시 복합재료의 새로운 분산방법

  • Kwon, Dong-Jun (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University) ;
  • Shin, Pyeong-Su (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Engineering Research Institute, Gyeongsang National University) ;
  • Kim, Jong-Hyun (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Engineering Research Institute, Gyeongsang National University) ;
  • Park, Joung-Man (Department of Materials Engineering and Convergence Technology, Center for Creative Human Resource & Convergence Materials, Engineering Research Institute, Gyeongsang National University)
  • Received : 2016.06.26
  • Accepted : 2016.08.30
  • Published : 2016.08.31
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Abstract

SiC nanoparticles were used to increase flexural properties of polymer matrix. This study was to manufacture huge concentration SiC nanoparticle/epoxy composites and to evaluate the dispersion. During mixing SiC nanoparticle and epoxy, 20 wt% SiC nanoparticle in total composites was used with both stirrer and sonication equipment together. Mixing speed and dispersion were improved with the method by using both stirrer and sonication equipment at the same time via mechanical test and FE-SEM. Based on the results, modeling of SiC nanoparticle dispersion could be established. Ultimately, unidirectional carbon fiber reinforced composites was manufactured using 20 wt% SiC nanoparticle/epoxy. Mechanical property of CFRP using dual stirrer and sonication mixing method was better than composites by single sonication mixing method.

SiC 나노입자는 고분자 수지의 굴곡특성을 강화하기 위해 사용된다. 본 연구는 대용량 SiC 나노입자가 함유된 에폭시 수지를 제조하고 분산도를 평가한 것에 관한 내용이다. SiC 나노입자를 혼합하는 과정에 교반기와 초음파 분쇄기를 동시에 사용하여 20 wt%의 SiC 나노입자 강화 에폭시 복합재료를 제조하였다. 교반기와 분쇄기를 동시에 이용하는 방법으로 분산속도와 분산도가 개선됨을 기계적 물성 평가와 FE-SEM 결과로 확인하였다. 이러한 결과로 SiC 나노입자의 분산 모델을 구축하였다. 궁극적으로, 탄소섬유(UD 타입)와 20 wt% SiC 나노입자 강화 에폭시 수지를 사용하여 복합재료를 제조하였다. 교반기와 분쇄기를 동시에 사용했을 경우 초음파 분쇄기만 이용했을 경우에 비해 우수한 복합재료의 물성을 나타내었다.

Keywords

References

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