Study of the curing kinetics of melamine/phthalonitrile resin system

•Curing kinetic of phthalonitrile/melamine system were investigated for the first time.•The activation energy values of different conversion show independent with curing extent and melamine content.•Curing reaction of phthalonitrile/melamine could be described by autocatalytic model.•The predicted m...

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Bibliographic Details
Published inThermochimica acta Vol. 683; p. 178442
Main Authors Lv, Jiangbo, Hong, Jinlang, Liang, Bo, Zhao, Erjin, Zeng, Ke, Chen, Menghao, Hu, Jianghuai, Yang, Gang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2020
Subjects
Autocatalytic model
Curing behavior
Melamine
Non-isothermal DSC
Phthalonitrile
Autocatalytic model
Phthalonitrile
Non-isothermal DSC
Melamine
Curing behavior
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Summary:•Curing kinetic of phthalonitrile/melamine system were investigated for the first time.•The activation energy values of different conversion show independent with curing extent and melamine content.•Curing reaction of phthalonitrile/melamine could be described by autocatalytic model.•The predicted model fits well with the experimental data. The exploration of curing process is important for the application of phthalonitrile resins in advanced materials. In this study, the curing behaviors of 1,3-bis (3,4-dicyanophenoxy) benzene (3BOCN) and melamine (MI) system was studied by differential scanning calorimetry (DSC) at different heating rates. An autocatalytic model could describe the curing reaction of 3BOCN-MI. The curing parameters including apparent activation energy, reaction orders and pre-exponential factor were calculated. The average activation energies for the three different proportions of 3BOCN-MI (8:1, 8:2, 8:3) system were 93, 98 and 96 kJ/mol, respectively. Besides, the predicted models for the reaction of 3BOCN-MI curing fitted well with the experimental data.
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2019.178442