Synthesis of Castor Oil‐Derived Decanediamide as a Novel Flexible Asphalt‐Modified Epoxy Resin Curing Agent

Castor oil‐derived decanediamide, as a novel flexible epoxy curing agent, was synthesized by esterization with methanol and ammonolysis with ammonia. The chemical structure and thermal properties of this novel curing agent were confirmed by Fourier transform infrared spectroscopy ( FT ‐ IR ), 1 H nuclear magnetic resonance ( 1 H NMR ) analysis, differential scanning calorimeter ( DSC ), and thermogravimetric analysis ( TGA ). The tensile...