NY9200GA树脂体系的固化反应动力学和TTT图研究

Curing Kinetics and TTT-Diagram of NY9200GA Resin

采用动态DSC法,研究了NY9200GA树脂的固化反应动力学。根据kissinger方程和Crane方程,拟合得到环氧树脂的固化动力学参数,建立了该树脂的唯象模型。以NY9200GA树脂175℃恒温不同时间后的DSC测试结果,根据DiBenedetto方程,建立了NY9200GA树脂的玻璃化转变温度与固化度之间的函数关系。采用凝胶盘法获得NY9200GA树脂在不同温度下的凝胶时间,建立了凝胶时间和凝胶温度之间的函数关系,得到了树脂的时间-温度-转变(TTT)图。

The curing kinetics of NY9200GA resin was stduied by dynamic DSC analysis,and parameters of the curing reaction were obtained to establish a phenomenological model based on kissinger and Crane equations.Also,based on the DSC experimental data of NY9200GA resins at 175℃with different heating time,the relationship between curing degree and heating time of NY9200GA resin was investigated with DiBenedetto equation under isothermal condition,and the equation of glass transition temperature and curing time were obtained.The gel time of NY9200GA resin was gained at different time by gelation disk.The functional relationship between conversion at gelation and glass transition temperature of NY9200GA resin was also obtained.Then,the time-temperature-transition(TTT)diagram was presented based on the above results.