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Study of Cure Kinetics of Vacuum Bag Only Prepreg Using Differential Scanning Calorimetry

시차주사열량계를 이용한 진공백 성형 프리프레그의 경화 거동 연구

  • Hyun, Dong Keun (Material & Process Technology, Korean Air Aero-Space Division) ;
  • Lee, Byoung Eon (Material & Process Technology, Korean Air Aero-Space Division) ;
  • Shin, Do Hoon (Material & Process Technology, Korean Air Aero-Space Division) ;
  • Kim, Ji Hoon (School of Mechanical Engineering, Pusan National University)
  • Received : 2019.08.27
  • Accepted : 2020.03.16
  • Published : 2020.04.30

Abstract

The cure kinetics of carbon fiber-reinforced prepreg for Vacuum Bag Only(VBO) process was studied by differential scanning calorimetry (DSC). The total heat of reaction (ΔHtotal = 537.1 J/g) was defined by the dynamic scanning test using prepregs and isothermal scanning tests were performed at 130℃~180℃. The test results of isothermal scanning were observed that the heat of reaction was increased as the temperature elevated. The Kratz model was applied to analyze the cure kinetics of resin based on the test results. To verify the simulation model, the degree of cure from panels using different cure cycles were compared with the measurement. The simulation model showed that the error against the experimental value was less than 3.4%.

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