进行了RTM工艺专用双马来酰亚胺(BMI)树脂体系的化学流变特性及工艺过程研究.采用DSC热分析技术和粘度测量手段,研究了该树脂体系固化特性以及固化过程中粘度与温度的关系,根据对等温粘度曲线的分析,建立了双阿累尼乌斯粘度模型和工程粘度模型.对比所建立的两种粘度模型,结果显示两种模型都可以适用于RTM工艺注射阶段,工程模型在粘度转折点附近的预测精度要优于双阿累尼乌斯粘度方程.同时建立了恒温温度-凝胶时间之间的数学关系.验证了所建立的工程模型在工程中的实用性,并指出了工程粘度模型的使用范围在固化体系交联结构形成之前,所建立的工程粘度模型能够有效地预测体系RTM工艺的粘度变化和工艺过程,为复合材料成型工艺模拟分析以及工艺参数的准确制定奠定了基础.
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