非等温DSC法研究TiB_2/环氧树脂E-44体系固化动力学  

Curing kinetics of TiB_2/epoxy resin E-44 system studied by non-isothermal DSC

作　　者：李常雄[1] 戴亚堂[1] 胡小平[1] 张欢[1] 周龙平[1] 刘志虎[1] 

机构地区：[1]四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地西南科技大学,四川绵阳621010

出　　处：《热固性树脂》2011年第3期6-10,共5页Thermosetting Resin

基　　金：国家自然科学基金(50973091);国家科技支撑计划子课题(2009BAE850206);西南科技大学博士基金(082X0101)

摘　　要：采用非等温DSC法对硼化钛(TiB2)/环氧树脂E-44体系的固化反应动力学进行了研究。应用Kissinger和Flynn-Wall-Ozawa法计算得到了纯E-44和TiB2/E-44体系的固化反应动力学参数,并求得TiB2/E-44体系固化反应速率方程。结果表明,两种方法所得的动力学参数相近,验证了该体系符合n级反应模型原理。利用外推法得到了TiB2/E-44体系的固化起始温度T0(192.8℃)、峰顶温度Tp(251.3℃)及完成温度Ti(262.1℃)。按照上述优化固化工艺制备TiB2/E-44样品,用SEM观察样品微观形貌表明,样品中无裂纹和气泡孔,各相之间粘接很好,组织结构致密。Curing kinetics of TiB2/epoxy resin E-44 system was studied by non-isothermal differential scanning calorimetry（DSC.Kinetic parameters of pure E-44 and TiB2/E-44 system were calculated by the Kissinger-Crane and Ozawa method.The curing reaction rate equation of TiB2/E-44 system was obtained.The results showed that the kinetic parameters by two methods were approximate and that validated the curing reaction was consistent with the principle of nth order reaction model.Initial curing temperature T0（192.8 ℃,peak temperature Tp（251.3 ℃ and completed temperature Ti（262.1 ℃of TiB2/E-44 system were obtained by extrapolation method.The TiB2/E-44 samples was preparaed in accordance with the above optimum curing process.The microstructure of samples was analyzed by SEM.The results showed no cracks and bubble holes in the sample,compact structure and good bonding between each phase.

关 键 词：环氧树脂E-44 硼化钛(TiB2) 固化反应 动力学 DSC 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]