采用动态力学分析法(DMA)对碳纤维/双马树脂预浸料恒温、升温过程中动态力学性能的变化进行了研究,结合DSC、偏光显微镜确定了碳纤维/双马树脂预浸料的软化、熔融、凝胶、玻璃化转变及反应始终点的表征方法,考察了预浸料各转变点随升温速率、温度、频率的变化规律以及预浸料的反应规律.结果表明,DMA能很好地表征碳纤维/双马树脂预浸料加热固化中的多种物理化学转变.由于双马树脂基体在180℃以上的反应机制与在180℃以下的不同,这2个温度范围内碳纤维/双马树脂预浸料恒温固化终点的反应程度、力学转变率随恒温温度的变化规律不同.
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