研究了 RTM专用双马来酰亚胺树脂体系的流变特性 ,并根据树脂不同温度下反应机理的不同 ,建立其分段粘度模型 ,粘度模拟结果与实验结果具有良好的一致性。所建立的粘度模型 ,可有效预测和模拟该树脂体系在不同工艺条件下的粘度行为 ,揭示了树脂体系的优化工艺参数和低粘度平台工艺窗口 ,为合理拟订RTM工艺参数和保证产品质量提供了必要的科学依据 The rheological properties of the bismaleimide resin system for RTM were studied. According to the different reaction mechanism of the resin at different temperatures, the segmented viscosity model was established. The viscosity simulation results were in good agreement with the experimental results. The established viscosity model can effectively predict and simulate the viscosity behavior of the resin system under different process conditions. The optimized process parameters of the resin system and the process window of the low-viscosity platform are revealed, providing a reasonable formulation of the RTM process parameters and ensuring the product quality Necessary scientific basis