论文部分内容阅读
以酚酞型双马来酰亚胺(PBMI)和芳香二胺(DDE)为原料,经迈克尔加成反应制备出新型环氧树脂芳胺固化剂(PBMIDDE),红外光谱和核磁共振等分析方法证实了新型固化剂的分子结构。用动态差示扫描量热法(DSC)确定了该固化剂和环氧树脂的固化工艺并对固化动力学进行了研究。采用Kissinger方程、FWO方程计算出固化反应活化能分别为46.7 kJ/mol,49.1 kJ/mol,并结合Crane方程计算出反应级数为0.88。动态热机械分析表明,完全固化的树脂体系玻璃化转变温度为153℃;热失重研究结果显示,新型环氧树脂体系具有优异的热稳定性。
The novel epoxy resin aromatic amine curing agent (PBMIDDE) was prepared by the Michael addition reaction using phenolphthalein bismaleimide (PBMI) and aromatic diamine (DDE) as raw materials. The results of IR and 1H NMR showed that The molecular structure of the new curing agent. The curing process of the curing agent and epoxy resin was confirmed by dynamic differential scanning calorimetry (DSC) and the curing kinetics was studied. The Kissinger equation and FWO equation were used to calculate the activation energy of 46.7 kJ / mol and 49.1 kJ / mol respectively, and the reaction order was 0.88 according to the Crane equation. Dynamic thermo-mechanical analysis showed that the glass transition temperature of the completely cured resin system was 153 ℃. The results of TGD showed that the new epoxy resin system has excellent thermal stability.