含硅苯并噁嗪的制备及其对双马来酰亚胺树脂固化反应动力学的影响

通过溶剂法设计合成出了结构中含有硅元素的新型苯并噁嗪单体(Si-BOZ)，以其作为改性体系对双马来酰亚胺树脂(BMI)进行共混改性，在降低BMI预聚物粘度的同时优化其固化工艺，改善其综合性能。选用平板小刀法测定了Si-BOZ、BMI、Si-BOZ/BMI等树脂体系的凝胶时间，红外光谱(FTIR)跟踪研究了Si-BOZ和BMI在固化过程中所发生的化学反应，非等温差示扫描量热法(DSC)研究了Si-BOZ/BMI树脂体系的固化反应动力学特征，并通过Kissinger法和Ozawa法对两者固化过程中的各参数进行了讨论。

Preparation of Si-containing Benzoxazine and Its Influence on Curing Reaction Kinetics of Bismaleimide Ester Resin

A new Si-containing BOZ resin monomer (Si-BOZ) was prepared via chemical synthesis method, which was then used as the modifier to blend with BMI, so that to yield the BMI prepolymer with lower viscosity, and the modified BMI resin can also exhibits excellent heat resistance, radiation resistance and mechanical properties. The gelation time of Si-BOZ, BMI, Si-BOZ/BMI resin was studied by plate small knife method, the chemical reactions of Si-BOZ and BMI during curing process were studied by FTIR, and the effect of the addition of Si-BOZ on the curing reaction kinetics of BMI was studied by non-isothermal scanning calorimetry (DSC). The role of parameters in the curing process was also discussed by Kissinger method and Ozawa method.