Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Effect of Polyhedral Oligomeric Silsesquioxane on Cure Characterization of an Epoxy/Amine System

에폭시/아민계의 경화 특성에 미치는 Polyhedral Oligomeric Silsesquioxane의 영향

  • Gu, Puzhong (Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Lee, Jong Keun (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
  • 구푸종 (금오공과대학교 고분자공학과) ;
  • 이종근 (금오공과대학교 고분자공학과)
  • Received : 2012.07.25
  • Accepted : 2012.09.10
  • Published : 2013.01.25
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Abstract

The glass transition temperature ($T_g$) and conversion (${\alpha}$) were measured for a diglycidyl ether of bisphenol A (DGEBA) epoxy/aromatic amine system incorporated with an organic-inorganic hybrid molecule, polyhedral oligomeric silsesquioxane (POSS). Samples isothermally cured at varying cure temperatures and times were analyzed by differential scanning calorimetry (DSC). $T_g$ vs. ln (time) data at an arbitrary reference were superposed by time-temperature shifts for the kinetically controlled reaction, and the shift factors were used to calculate an Arrhenius activation energy. Influence of POSS was investigated from $T_g$ vs. ${\alpha}$ data, which in turn were fitted with DiBenedetto equation.

유무기 하이브리드 나노 물질인 polyhedral oligomeric silsesquioxane(POSS)를 첨가한 diglycidyl ether of bisphenol A(DGEBA) 에폭시/방향족 아민계를 다양한 경화온도에서 등온으로 반응시킨 후 유리전이온도($T_g$)와 전환율(${\alpha}$)을 DSC를 이용하여 측정하였다. 등온 경화시간에 따른 $T_g$의 변화 데이터를 임의로 설정된 기준 온도에서 수평 이동시켜 반응초기에 해당하는 속도우세 구간에서 서로 겹치게 하여 이때 필요한 이동 인자를 구하였으며, 이를 이용하여 활성화 에너지를 결정하였다. 또한 POSS가 $T_g$ 및 ${\alpha}$에 미치는 영향을 조사하였으며 이들의 관계를 알기위하여 DiBenedetto식을 이용하여 분석하였다.

Keywords

Acknowledgement

Supported by : 금오공과대학교

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