Diffusion control on the cure kinetics of DGEBA with ethylenediamines

Diffusion control on the cure kinetics of DGEBA with ethylenediamines

The cure kinetics of DGEBA with aliphatic diamines was studied on the diffusion-controlled region. Two different diamines (ethylenediamine (EDA) and N-(methyl)ethylenediamine (MEDA)) were selected, to achieve different cross-linked networks. Additionally, reaction of DGEBA with butylamine was follow...

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Veröffentlicht in:Journal of materials processing technology 2003-12, Vol.143, p.546-550
Hauptverfasser: Prolongo, S.G, Mikes, F, Cabanelas, J.C, Paz-Abuı́n, S, Baselga, J
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DGEBA
Diffusion control
Free volume
Thermosetting resins
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container_issue
container_start_page 546
container_title Journal of materials processing technology
container_volume 143
creator Prolongo, S.G
Mikes, F
Cabanelas, J.C
Paz-Abuı́n, S
Baselga, J
description The cure kinetics of DGEBA with aliphatic diamines was studied on the diffusion-controlled region. Two different diamines (ethylenediamine (EDA) and N-(methyl)ethylenediamine (MEDA)) were selected, to achieve different cross-linked networks. Additionally, reaction of DGEBA with butylamine was followed to compare non-cross-linked systems with the above mentioned ones. Curing temperatures were between 20 and 60 °C. Concentrations of epoxy and primary amine functionality were both followed by near FTIR, and T g was analyzed by DSC. An autocatalytic model was applied. Diffusion control kinetic in cross-linked polymers was analyzed in terms of free volume decrease. In that region, a model based on a WLF equation provides a good fit to the experimental data.
doi_str_mv 10.1016/S0924-0136(03)00349-2
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subjects DGEBA
Diffusion control
Free volume
Thermosetting resins
title Diffusion control on the cure kinetics of DGEBA with ethylenediamines
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