Applied Chemistry for Engineering (공업화학)
- Volume 5 Issue 4
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- Pages.731-736
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- 1994
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- 1225-0112(pISSN)
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- 2288-4505(eISSN)
Cure Kinetics of DGEBA/MBA/MN and DGEBA/MDA/MN/HQ Systems by Kissinger Equation and Fractional Life Method
Kissinger Equation과 Fractional Life법에 의한 DGEBA/MDA/MN계와 DGEBA/MDA/MN/HQ계의 경화반응 속도론
- Lee, Jae-Young (Dept. of Chem. Eng., Seoul City Univ.) ;
-
Shim, Mi-Ja
(Dept. of Life Sci., Seoul City Univ.)
;
- Kim, Sang-Wook (Dept. of Chem. Eng., Seoul City Univ.)
- Received : 1994.05.20
- Accepted : 1994.06.22
- Published : 1994.08.01
Abstract
Cure kinetics of DGEBA/MDA/MN system with and without HQ were studied by Fractional life method and Kissinger equation. And the effect of HQ as a catalyst was studied. As cure temperature increased, the reaction rate increased and reaction order was almost constant. The activation energy of the system with HQ was lower about 13% and the reaction rate was higher than that of the system without HQ. It was because hydroxyl group of HQ formed a transition state with epoxide group and amine group and opened the epoxide ring easily and rapidly.
DGEBA/MDA/MN계와 이 계에 촉매로서 hydroquinone(HQ)를 첨가한 계의 경화반응 속도론을 Fractional life법 및 Kissinger equation에 의해 연구함으로써 HQ가 경화반응 속도에 미치는 영향을 연구하였다. 경화반응 온도가 증가함에 따라 반응속도는 증가하였고, 반응차수는 약간의 변화가 있을 뿐 경화온도에 따른 경향성은 없었다. 촉매로 HQ를 첨가한 계가 첨가하지 않은 계보다 반응속도는 크게 증가하였고, 활성화 에너지는 13% 감소하였다. 이는 HQ의 히드록시기가 에폭사이드기, 아민기와 반응하여 전이상태를 형성함으로써 에폭사이드 고리를 쉽고 빠르게 개환시켜 주기 때문이다.
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