In this research, we investigated the hygrothermal aging process and mechanism of carbon fiber reinforced plastic (CFRP) prepared by prepreg and suitable to be stored at room temperature. By submerging CFRP in distilled water under different temperatures, we have conducted moisture absorption, chemical structure, mechanical properties, fracture morphology, thermal properties and lifespan prediction of CFRP. The prepreg system may be stored for at least 60 days at room temperature, due to the results of FT-IR and DSC analysis. The moisture absorption is increased linearly with the square root of aging time; it follows the Fick's second law. An important part in the hygrothermal aging of CFRP is taken by plasticization and degradation. It is predicted by the residual strength model, that the lifespan under natural conditions is greater than 60 years. We believe that this study can benefit the extensive and safe application of prepreg that is suitable to be stored at room temperature in engineering application.

在这项研究中，我们研究了预浸料制备的碳纤维增强塑料（CFRP）的湿热老化过程和机理，该碳纤维增强塑料适合在室温下保存。通过在不同温度下将CFRP浸入蒸馏水中，我们进行了CFRP的吸湿性，化学结构，力学性能，断裂形态，热性能和寿命预测。由于FT-IR和DSC分析的结果，预浸料系统可以在室温下保存至少60天。水分吸收随老化时间的平方根线性增加；它遵循菲克第二定律。CFRP湿热老化的一个重要部分是塑化和降解。由残余强度模型预测，在自然条件下的使用寿命超过60年。我们认为，这项研究可以使预浸料的广泛和安全应用受益，该预浸料适用于在工程应用中室温保存。