耐高温双马来酰亚胺树脂的固化反应动力学和TTT图  

Curing Kinetics and TTT Diagram of High Temperature Resistance Bismaleimide Resin

作　　者：李伟东 张金栋[2] 李韶亮 刘刚 钟翔屿 包建文 

机构地区：[1]中航复合材料有限责任公司,北京101300 [2]核工业理化工程研究院,天津300180 [3]空军驻北京地区军事代表室,北京101300

出　　处：《材料工程》2016年第9期44-51,共8页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(51203144);航空科学基金资助项目(20155212009)

摘　　要：采用动态DSC法对耐高温双马来酰亚胺树脂的固化反应动力学进行研究,根据Kissinger方程和Crane方程,拟合得到树脂的固化动力学参数,并建立树脂的唯象模型。此外,采用恒温DSC法,根据DiBenedetto方程,建立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,获得树脂在不同温度下的凝胶时间,建立凝胶时间和凝胶温度之间的函数关系,最终得到树脂的TTT图。结果表明:根据TTT图确定合适的加压时机,可以有效排除夹杂于预浸料层内层间的气体,从而制备内部质量完好的复合材料。The curing kinetics of high temperature resistance bismaleimide resin was studied by dynamic DSC analysis,and the parameters of the curing reaction were obtained to establish a phenomenological model based on Kissinger and Crane equations.The relationship between glass transition temperature and curing degree was analyzed with isothermal DSC method based on DiBenedetto equation.Moreover,the relationship between gel-time and temperature was investigated by gelation disk.Finally,the time-temperature-transition（TTT）diagram was built to guide the process of the resin.Results show that appropriate pressure timing can be determined according to the TTT diagram.Thus,air in or between layers of prepreg can be eliminated effectively to prepare composites with good internal quality.

关 键 词：双马来酰亚胺树脂 固化反应动力学 TTT图 工艺优化 

分 类 号：TB332[一般工业技术—材料科学与工程]