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In situ monitoring of epoxy resin curing process: Using glass transition as a bridge by Zhicheng Wu; Qingyun Chen; Dexing Liu; Jiasheng Fan; Qiaogen Zhang; Weijiang Chen is a Materials Science article available to read on EtoBox.

What is In situ monitoring of epoxy resin curing process: Using glass transition as a bridge about?

Dielectric analysis (DEA) is an effective method for monitoring the curing process of epoxy resin (EP) in situ, but the influence of curing temperature on the measurement results limits the application of DEA in curing process monitoring with variable temperature. In this study, the theoretical basis of using the glass transition as a bridge and monitoring the curing degree by ionic conductivity was analyzed. DEA experiments and differential scanning calorimeter (DSC) experiments were carried out and the mathematical model of ionic conductivity, glass transition temperature, and curing degree of the EP established. The parameters in the model were only related to the composition of EP system in the model as verified for implementing curing-degree monitoring of the EP system cured at variable temperature. The FT-IR spectra measurement was carried out and the activation energy of curing reaction was calculated by results of DEA and DSC, which verified the reliability and scientificity of the method. The method of using glass transition as a bridge can monitor the curing degree in the curing process with variable temperature and extends DEA to the monitoring of this process under vari

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Author

Zhicheng Wu; Qingyun Chen; Dexing Liu; Jiasheng Fan; Qiaogen Zhang; Weijiang Chen

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Materials Science (Physical Sciences)