한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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UV 경화형 복합재료의 진공압에 따른 기계적 경화 특성 분석

Analysis of Mechanical Curing Properties Based on Vacuum Pressure of UV-Cured Composites

  • 장용수 (전주대학교 탄소융합공학과) ;
  • 김정근 (전주대학교 탄소융합공학과) ;
  • 고선호 (전주대학교 탄소연구소) ;
  • 김홍건 (전주대학교 탄소융합공학과) ;
  • 곽이구 (전주대학교 탄소융합공학과)
  • Jang, Yong-Soo (Department of Carbon Convergence Engineering, JEONJU UNIV.) ;
  • Kim, Jeong-Keun (Department of Carbon Convergence Engineering, JEONJU UNIV.) ;
  • Go, Sun-Ho (JEONJU UNIV. Institute of Carbon Tech.) ;
  • Kim, Hong-Gun (Department of Carbon Convergence Engineering, JEONJU UNIV.) ;
  • Kwac, Lee-Ku (Department of Carbon Convergence Engineering, JEONJU UNIV.)
  • 투고 : 2020.09.04
  • 심사 : 2020.09.15
  • 발행 : 2020.12.31
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초록

In this study, a UV-cured GFRP molding is made using a combination of hand lay-up and resin transfer molding, and its properties are analyzed. The molded plates produced using various vacuum pressures (0 mmHg, -450 mmHg, and -760 mmHg) are examined via a comparison of hand lay-up molding and resin transfer molding. Tests are conducted by processing tensile specimens (ASTM D-5083), flexural test specimens (ASTM D-790), and ILSS test specimens (ASTM D-2344) according to each ASTM standard with a molded plate. Similarly, the UV-cured GFRP molding is compared against GFRP using epoxy. It was confirmed that the mechanical strengths of all the specimens increased when the vacuum pressure was increased and when UV curing was applied. This is believed to be because as the vacuum pressure increases, the pores of the cured specimen are removed, thereby reducing defects, and the bonding force between the glass fiber and the resin is stronger than that of the epoxy resin. It is expected that if resin transfer molding methods and UV-cured resins are used for molding GFRP composites in industry, products with better mechanical properties and faster curing time will be produced.

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참고문헌

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