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首页> 外文期刊>Journal of Applied Polymer Science >Experimental investigation of moisture diffusion in short-glass-fiber-reinforced polyamide 6,6
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Experimental investigation of moisture diffusion in short-glass-fiber-reinforced polyamide 6,6

机译：短玻璃纤维增​​强聚酰胺6,6中水分扩散的实验研究

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Moisture diffusion in polyamide 6,6 (PA66) and its short glass fiber-reinforced composites has a great influence on their mechanical properties and service lives under hydrothermal environments. Hence, the moisture diffusion in neat PA66 and its composites was studied comprehensively in this study with the general Fickian model. To systematically investigate the effects of the fiber content, humidity, temperature, and humidity-temperature coupling effect on the diffusion coefficient and equilibrium concentration, gravimetric experiments for the PA66 composites were carried out under different hydrothermal conditions. The results show that the equilibrium moisture concentration depended on the relative humidity and fiber content but only depended weakly on temperature. The diffusion velocity was affected by the three aforementioned factors with different trends. The analysis of variance demonstrated that the humidity-temperature coupling effect played an important role in the diffusion process. The regression analysis gave the corresponding quadratic regression equations. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42369.
机译：聚酰胺6,6（PA66）及其短玻璃纤维增​​强复合材料中的水分扩散对其在水热环境下的机械性能和使用寿命有很大影响。因此，本研究利用普通的Fickian模型对纯净的PA66及其复合材料中的水分扩散进行了全面研究。为了系统地研究纤维含量，湿度，温度和湿温耦合效应对扩散系数和平衡浓度的影响，在不同的水热条件下进行了PA66复合材料的重量分析实验。结果表明，平衡水分浓度取决于相对湿度和纤维含量，而仅微弱地取决于温度。扩散速度受上述三个不同趋势因素的影响。方差分析表明，湿热耦合效应在扩散过程中起着重要作用。回归分析给出了相应的二次回归方程。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42369。

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