Abstract

A bio-based epoxy resin was synthesized from cardanol which is natural renewable resource. Subsequently, diglycidyl ether of bisphenol A (DGEBA) was toughened with three different mass proportions of bio-based epoxidized cardanol–formaldehyde resin (ECF) (i.e., 20, 40, 60 mass%). In this study, the curing kinetics of amine-cured modified resin was studied by non-isothermal differential scanning calorimetry analysis. The apparent activation energy obtained by Kissinger and Flynn–Wall–Ozawa methods was 48 and 52 kJ mol−1, respectively. The two-parameter Sestak–Berggren autocatalytic model was used to obtain the reaction orders m and n. The curves obtained by the Malek method show good agreement with the experimental data for bio-based epoxy systems.

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