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环氧树脂基复合材料因其比强度高、比模量高、可设计性好、制造工艺简单、成本较低、高温性能好等优点,它已被广泛应用到航空航天工程、船舶工程、建筑工程、兵器工业、化学工程、车辆制造工业等各个领域~([1])。由于复合材料在应用过程中会经历长时间高温、高湿共同作用或高温、高湿交替作用,复合材料会长时间经历吸湿-脱湿循环过程,导致材料性能下降较快。由于热固性树脂的吸水率较大,环氧树脂属于热固性树脂中的一类,因此湿热环境
Epoxy resin-based composites have been widely used in aerospace engineering, shipbuilding, construction, building materials and so on because of their advantages such as high specific strength, high specific modulus, good design, simple manufacturing process, low cost and high temperature performance. Engineering, weapons industry, chemical engineering, vehicle manufacturing industry and other fields ~ ([1]). As the composite material undergoes high temperature, high humidity or high temperature and high humidity alternately during the application, the composite material will undergo the hygroscopic-desorption cyclic process for a long time, resulting in the rapid decrease of the material properties. Due to the high water absorption of thermosetting resins, epoxy resins belong to a class of thermosetting resins, so hot and humid environment