Curing kinetics and thermal characterization of epoxy resin cured with amidodicarboxylic acids

• Published in: Applied thermal engineering Vol. 125; pp. 285 - 296
• Main Authors: Mustata, Fanica, Tudorachi, Nita
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-10-2017; Elsevier BV
• Subjects: Amidodicarboxylic acids; Crosslinking; Curing; Curing kinetics; Epoxy resins; Hardeners; Heat measurement; Infrared radiation; Kinetics; Reaction kinetics; Reaction mechanisms; Thermal analysis; Thermal degradation; Thermal stability; Thermodynamic properties; Amidodicarboxylic acids; Curing kinetics; Epoxy resins; Thermal stability
• ISSN: 1359-4311; 1873-5606
• DOI: 10.1016/j.applthermaleng.2017.07.037

•Curing properties of epoxy resins crosslinked with amidodicarboxylic acids.•Simultaneous TG/FT-IR/MS analysis of crosslinked resins.•Life time prediction of the crosslinked products.
Thermal properties and the curing kinetics of a system based on DGEBA as epoxy resin and two amidodicarboxylic acids as hardeners (epoxy ring/carboxylic proton at 1/0.7molar ratio) were investigated using differential scanning calorimetry (DSC) and simultaneous TG/FT-IR/MS analysis. “Thermokinetics-3” software (Netzsch) was used to simulate the curing reaction mechanisms and thermal degradation of the crosslinked products, simultaneously with the kinetic parameters determination. According to data obtained with this program, the crosslinking processes occurred in two or three steps while the thermal processes occurred in three steps, depending on the chemical structure of the crosslinking agents.