Cure Behavior of a DGEBF Epoxy using Asymmetric Cycloaliphatic Amine Curing Agent

비대칭 고리형 지방족 아민 경화제를 이용한 DGEBF 계열 에폭시의 경화 거동

  • Kim, Hongkyeong (Department of Polymer Science and Engineering, Chungju National University)
  • 김홍경 (충주대학교 고분자공학과)
  • Received : 2007.12.06
  • Accepted : 2008.01.02
  • Published : 2008.02.28

Abstract

The curing kinetics of diglycidyl ether of bisphenol F (DGEBF) with an asymmetric cycloaliphatic amine curing agent were examined by thermal analysis in both isothermal and dynamic curing conditions. From the residual curing of the samples partially cured in isothermal condition and from the dynamic curing with various heating rates, it was found that there exist two kinds of reactions such as at low temperature and at high temperature regions. It was thus also found that the cure parameters obtained from the isothermal curing kinetic model hardly estimate experimental results for a degree of cure larger than 0.6. The activation energies and frequency factors of these two kinds of reactions were obtained from the dynamic curing experiments with various heating rates. From the curing analysis, it was verified that the total cure kinetics for low degrees of cure is dominated by the cure reaction in the low temperature region.

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