EVALUATION OF CURING BEHAVIOR OF TETRA-FUNCTIONAL EPOXY RESIN WITH METHYL NADIC ANHYDRIDE

Tetra-functional epoxy resin has been synthesized, starting from 4,4’-diaminodiphenylether and epichlorohydrin. The curing behavior of synthes ized epoxy resin has been evaluated using methyl nadic anhydride (MNA) as a curing material. The obtained resin was characterized by FT-IR and 1 HNMR spectroscopy. The curing behavior of epoxy res in with MNA has been studied using FT-IR and Differential scanning calorimetry (DSC) t echniques. The thermal behavior of epoxy resin has been evaluated using Thermo gravimetric Analyzer (TGA) and DSC techniques. The DSC analysis of uncured resin with MNA showed the maxim um rate of curing at 177 0 C. The cured epoxy resin showed T g at 197 0 C. The TGA analysis of cured epoxy resin showed two step degradation, T onset at 350 0 C with char yield of 22% at 800 0 C.