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采用非等温DSC(差示扫描量热)法研究了环氧树脂(EP)体系的固化过程,并采用Kissinger方程、Crane方程和T-β(温度-升温速率)外推法计算出该EP体系固化反应的动力学参数和固化温度。研究结果表明:当m(EP)∶m(填料)∶m(固化剂)∶m(促进剂)=100∶30∶90∶0.4时,EP体系固化反应的表观活化能为78.90 kJ/mol、指前因子为2.58×109min-1和反应级数为0.914,其最佳固化条件为“从室温升温至92℃(开始凝胶)→继续升温至140℃(恒温固化)→最后升温至169℃(进行后固化处理)”。
The curing process of epoxy resin (EP) was investigated by non-isothermal DSC (differential scanning calorimetry) method. The EP system was calculated by Kissinger equation, Crane equation and T-β extrapolation method Kinetic parameters of curing reaction and curing temperature. The results show that when m (EP): m (filler): m (curing agent): m (accelerator) = 100:30:90:0.4, the apparent activation energy of EP curing reaction is 78.90 kJ / mol , The pre-factor 2.58 × 109min-1 and the reaction order of 0.914, the best curing conditions “from room temperature to 92 ℃ (start gel) → continue to heat up to 140 ℃ (constant temperature curing) → the final temperature was raised to 169 ℃ (after curing) ”.