树脂基复合材料具有高比强度比模量、可设计性强、疲劳性能好、耐腐蚀、复合效应、多功能兼容、可整体成型等特点,在航空航天领域应用日益广泛,是最重要的航空航天结构材料之一。但是,在公众的意识中,通常认为树脂基复合材料的耐热性能不及钢、铝、钛等金属材料。事实上,航空航天树脂基复合材料包括了酚醛树脂、环氧树脂、氰酸酯树脂、双马来酰亚胺树脂和聚酰亚胺树脂等多种类型的复合材料,它们各具特色。在树脂基复合材料的大家族中,聚酰亚胺树脂基复合材料因其优异的耐热性能而登上 Resin-based composite materials with high specific strength modulus, designability, fatigue performance, corrosion resistance, composite effect, multi-function compatible, can be integrally formed and so on, in the increasingly wide range of applications in aerospace, is the most important aviation Aerospace structural materials. However, in public awareness, it is generally considered that the heat resistance of resin-based composite materials is inferior to that of metal materials such as steel, aluminum and titanium. In fact, aerospace resin-based composites include many types of composites such as phenolic resins, epoxy resins, cyanate resins, bismaleimide resins, and polyimide resins, each with their own unique characteristics. Among the large family of resin-based composites, polyimide resin-based composites boast superior heat resistance