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采用示差扫描量热法(DSC)研究了JF-45环氧树脂与E-51环氧树脂改性双酚A型氰酸酯树脂体系的固化反应动力学,根据Kissinger方程、Crane方程、Arrhenius方程对固化过程动力学参数进行了求解,建立了固化反应动力学模型。结果表明,改性氰酸酯固化过程存在2个放热峰;第1个放热峰对应的反应表观活化能、指前因子、反应级数和反应速率常数分别为75.192kJ/mol,7.321×107,0.901和7.321×107exp(-9044.022/T);第2个放热峰相应数据分别为83.073kJ/mol、4.986×107、0.911和4.986×107exp(-9991.941/T)。
The curing reaction kinetics of JF-45 epoxy resin and E-51 epoxy resin modified bisphenol A cyanate ester resin system was studied by differential scanning calorimetry (DSC). According to Kissinger equation, Crane equation, Arrhenius equation The kinetic parameters of the curing process were solved, and the curing reaction kinetic model was established. The results showed that there were two exothermic peaks in the curing process of the modified cyanate ester. The apparent activation energy, the exponential factor, the reaction order and the reaction rate constant corresponding to the first exothermic peak were 75.192kJ / mol and 7.321 × 107,0.901 and 7.321 × 107exp (-9044.022 / T). The corresponding data of the second exothermic peak were 83.073kJ / mol, 4.986 × 107,0.911 and 4.986 × 107exp (-9991.941 / T), respectively.