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采用Málek法对桐马酸酐与双酚A环氧树脂E-51体系(含有1%质量分数的DMP-30)的非等温固化反应动力学进行了研究。通过机理函数esták-Berggren方程很好地模拟了真实的固化反应过程。等转化率法求得反应活化能为69.78 kJ/mol。指前因子A的值为4.567×108 min-1,n和m的值分别为1.082和0.456。根据得到的固化动力学方程计算可知,在固化温度为137.05℃时达到98%固化度的固化时间为115 min。
The non-isothermal curing reaction kinetics of tung maleic anhydride and bisphenol A epoxy resin E-51 system (containing 1% DMP-30) was investigated by the Málek method. The real curing reaction is well simulated by the mechanism function esták-Berggren equation. The conversion activation method was used to obtain the activation energy of 69.78 kJ / mol. The value of pre-exponential factor A was 4.567 × 108 min-1 and the values of n and m were 1.082 and 0.456, respectively. According to the calculated curing kinetic equation, it can be seen that the curing time reaches 98% when the curing temperature is 137.05 ° C, and the curing time is 115 min.