深海环境下树脂基复合材料吸湿行为

Deep-sea water absorption behavior of glass fiber reinforced epoxy composite materials

通过自制压力容器模拟深海环境,采用称量法获得玻璃纤维增强环氧树脂(GF/CYD-128)层合板在不同压力下吸湿数据,研究GF/CYD-128层合板在深海环境的吸湿行为。结果表明:0～3.0MPa压力范围内GF/CYD-128层合板饱和吸湿量随着压力的增加呈现先下降后增加的趋势,压力为2.5MPa时饱和吸湿量最低,其饱和吸湿量随浸泡压力变化的趋势可用二次多项式描述;GF/CYD-128层合板在深海环境中的吸湿行为呈现non-Fick特征,但可以采用Langmuir模型进行描述。利用Langmuir模型准确预测了深海环境中GF/CYD-128层合板的吸湿行为。

The deep-sea environment was simulated through pressure vessels with nitrogen pressing system, and the seawater absorption data of glass fiber reinforced epoxy resin composite （GF/CYD-128） laminates under different pressures was obtained by weighing method to investigate the seawater absorption behavior of GF/CYD-128 laminates in the deep sea environment. The results show that the saturated seawater absorption of GF/CYD-128 laminates firstly decreases with the seawater pressure then increases with the increasing pressure. The saturated seawater absorption of GF/CYD-128 laminates deceases to the minimum value at the pressure of 2.5 MPa. The relationship between the saturated seawater absorption and the seawater pressure can be depicted by the quadratic polynomials. The seawater absorption behavior of GF/CYD-128 laminates at the deep-sea enviroment is non-Fick, however, it can be simulated by the Langmuir-type model. The seawater absorption behavior of GF/CYD-128 laminates under the deep-sea pressure is successfully predicted by the Langmuir-type model.