Kinetics of the Curing Reaction of a Diglycidyl Ether of Bisphenol with a Methanol Etherified Amino Resin

Yong Lv; Zhu Long; Shi Yong Luo; Lei Dai

doi:10.4028/www.scientific.net/AMR.380.60

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 380Kinetics of the Curing Reaction of a Diglycidyl...

Kinetics of the Curing Reaction of a Diglycidyl Ether of Bisphenol with a Methanol Etherified Amino Resin

Abstract:

_{Subscript text}_{Subscript text}Epoxy resins have been widely used for inner coating in food can and other chemical products storage containers. Differential scanning calorimetry (DSC) was used at different heating rates to study the cure kinetics of the diglycidyl ether of bisphenol A (DGEBA) with a methanol etherified amino resin (MEAR). The apparent activation energy derived from Kissinger and Ozawa methods is 35.67KJ/mol and 40.27kJ/mol, respectively. The reaction order evaluated by Crane equation is 0. 95 and the frequency factor is 1.12×10⁴s^-1. Reaction mechanism was monitored by FTIR spectra of the reaction mixtures before and after curing. The curing reaction below 200°C is between alkoxylmethyl (>NCH₂OCH₃) and epoxide group, not between alkoxylmethyl and hydroxyls.