Chen Guancheng, Yu Jian, Xiong Xin, Wang Zhenxing, Wu Jiawei, Wang Xinfeng, Huang Shuo
College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
College of General Aviation and Flight, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Polymers (Basel). 2025 Mar 7;17(6):707. doi: 10.3390/polym17060707.
This study focuses on AG-80 epoxy resin, using 5228A and BA9916-II as representative examples. Saturated moisture absorption tests and dynamic mechanical analyses (DMA) were conducted to investigate its physical properties. The saturated moisture absorption rates and diffusion coefficients for 5228A and BA9916-II were measured. Their distinct molecular structures were found to lead to different moisture-absorption behaviors. A hygro-thermal-mechanical constitutive model for AG-80 resin (represented by 5228A) was developed, taking into account the effects of temperature and moisture content on mechanical properties. The model was validated by DMA tests on 5228A/CCF300 composites. The research findings of this study enhance the understanding of AG-80 epoxy resin and provide a theoretical basis for its application in high-temperature-resistant industrial environments.
本研究聚焦于AG-80环氧树脂，以5228A和BA9916-II作为代表性实例。进行了饱和吸湿试验和动态力学分析（DMA）以研究其物理性能。测量了5228A和BA9916-II的饱和吸湿率和扩散系数。发现它们不同的分子结构导致了不同的吸湿行为。考虑到温度和含水量对力学性能的影响，建立了AG-80树脂（以5228A为代表）的湿热力学本构模型。通过对5228A/CCF300复合材料的DMA试验对该模型进行了验证。本研究的研究结果增进了对AG-80环氧树脂的理解，并为其在耐高温工业环境中的应用提供了理论依据。
