Study of the influence of isomerism on the curing properties of the epoxy system DGEBA (n=0)/1,2 DCH by DEA and MDSC |
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| Authors: | L Núńez-Regueira S Gómez-Barreiro C A Gracia-Fernández |
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| Institution: | (1) Research Group TERBIPROMAT, Departamento Física Aplicada, Universidade de Santiago, 15782, Santiago, Spain;(2) Research Group TERBIPROMAT, Departamento Física Aplicada, Universidade de Santiago, 15782, Santiago, Spain;(3) Research Group TERBIPROMAT, Departamento Física Aplicada, Universidade de Santiago, 15782, Santiago, Spain |
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| Abstract: | Summary Modulated differential scanning calorimetry (MDSC) and dielectric analysis (DEA) have been used to characterize the cure process
of the system diglycidyl ether of bisphenol A (DGEBA(n=0)/1,2 diaminocyclohexane (1,2 DCH). The trans isomer and a mixture cis/trans(30-70% respectively) of 1,2 DCH were used to find their different behaviour. The study allowed to check the influence of
the cisisomer on the thermoset curing process. Gelation times were obtained through the equation proposed by Johari and vitrification
times from the point of inflection of the complex calorific capacity modulus. |
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| Keywords: | MDSC epoxy DEA isomer |
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