Investigation on the Curing and Thermal Properties of Epoxy/Amine/Phthalonitrile Blend.

ABSTRACT: The bisphenol A-type phthalonitrile (BAPH) was blended with the classic epoxy system E51/DDS to prepare the epoxy/phthalonitrile thermoset. The curing kinetics were investigated by differential scanning calorimetry (DSC) using the isoconversional principle, and the average activation energy (E_α) of the E51/DDS curing reaction was found to decrease from 87 kJ/mol to 68.6 kJ/mol. Combining the results of the rheological study, the promoting effect of phthalonitrile on the crosslink of epoxy/amine is confirmed. The curing reaction of the blended resin was characterized using FTIR, and the results showed that BAPH could react with DDS. The thermal behaviors of the thermosets were investigated via DMA and TGA. The glass transition temperature (T_g) is found to increase from

SUBMITTER: Peng C 

PROVIDER: S-EPMC11395949 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature