环己二醇二缩水甘油醚/环氧树脂固化动力学

Study on curing reactions of epoxy resin diluted by 1,2-cyclohexanediol diglycidyl ether

对E-44环氧树脂,1,2-环己二醇二缩水甘油醚与E-44环氧树脂的混合物,1,2-环己二醇二缩水甘油醚分别与二氨基二苯基甲烷的固化反应应用示差扫描量热仪(DSC)进行了研究。在E-44环氧树脂中加入1,2-环己二醇二缩水甘油醚后,不但对环氧树脂有较好的稀释作用,降低了环氧体系固化反应的表观活化能,增加了环氧树脂的固化反应活性和固化反应速度,还提高了环氧固化物的力学性能。测定了反应热焓,计算出固化反应的表观活化能分别为46.08 kJ/mol,39.50 kJ/mol,35.58 kJ/mol,相应的固化反应级数分别为0.86,0.84,0.83。

In this thesis, the curing reactions between E - 44 epoxy resin, the mixture of E - 44 epoxy resin and 1,2- cyclohexanediol diglycidyl ether, 1,2- cyclohexanediol diglycidyl ether and curing agent DDM were studied by means of differential scanning calorimeter. E - 44 epoxy resin was effectively diluted, its apparent activation energy was decreased, its curing reactions activity and reaction rate was increased and the mechanical properties of cured E - 44/1,2 - cyclohexanediol diglycidyl/DD M system were also increased by adding 1,2 - cyclohexanediol diglycidyl to E - 44 epoxy system. The values of apparent activation energy were calculated that their were 46.08 kJ/mol, 39.50 kJ/mol, 35.58 kJ/mol respectively, meanwhile, the values of reaction order were 0.86, 0.84, 0.83 respectively.