Curing Kenetics of the Hydrogenated Bisphenol A Epoxy Resin

The hydrogenated bisphenol A epoxy resin (HBPA-EP) with an epoxy value of 0.45 was prepared by the reaction of hydrogenated bisphenol A and epichlorohydrin, and was cured with polyamines or anhydrides. The curing properties of the HBPA-EP with different hardeners were investigated by DSC, and the curing conditions, apparent activation energies, as well as the reaction kinetic equations were determined. As the result for the hardeners 1,3-cyclohexanedimethanamine, liquid polyamide, cis-hexahydrophthalic anhydride or methyl hexahydrophthalic anhydride, the curing condition was 100 ℃、2 h, 145 ℃、4 h, 90 ℃、2 h, 120 ℃、4 h, 130 ℃、2 h, 150 ℃、4 h， 140 ℃、2 h and 160 ℃、4 h, respectively. The apparent activation energy of curing reaction with the four hardeners was 50.62, 56.88, 74.56, 68.36 kJ/mol, respectively and the reaction order of the four hardeners was 0.886, 0.901, 0.915, 0.905, respectively.