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首页> 外文期刊>Journal of Applied Polymer Science >Creep Enhanced Adsorbtion of Water of Aqueous Zinc Chloride Solution Increases the Creep Rate of Nylon 6,6
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Creep Enhanced Adsorbtion of Water of Aqueous Zinc Chloride Solution Increases the Creep Rate of Nylon 6,6

机译：蠕变增强了氯化锌水溶液对水的吸附，提高了尼龙6,6的蠕变速率

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摘要

The creep behavior of nylon 6,6 at 21 deg C was significantly altered when the local "dry" environment was changed to water mist of an aqueous zinc chloride mist.Nylon 6,6 was found to exhibit logarithmic creep because the relation between the log of the strain rate and the creep strain was linear with a negative slope.The effect of ultrasonic humidifier was to decrease the negative slope by 50-70% within 5-10 min.This effect could be interpreted as a decrease in modulus,which allowed for easier creep deformation.Based on the stress-free diffusivity of water in nylon and the dimensions of the test sample the time to saturate the sample was estimated to be about 100 h.Therefore,there appeared to be synergism between the creep deformation and the environment that dramatically enhanced the rate of saturation and slowed the decrease in the creep rate.The tentative explanation provided is that the aqueous solutions,by binding to the hydrogen bonds in nylon,are dragged into the sample during creep deformation,and the dragged-in aqueous solution then plasticizes nylon.This is analogous to the presence of aqueous zinc chloride,transported the solution species deeper into the sample than could be reasonably explained by ordinary diffusion processes.
机译：当将局部“干燥”环境更改为氯化锌水溶液的水雾时，尼龙6,6在21摄氏度时的蠕变行为发生了显着变化。发现尼龙6,6表现出对数蠕变，这是因为对数之间的关系超声波加湿器的作用是在5-10分钟内将负斜率减小50-70％，这可以解释为模量的减小，这允许根据水在尼龙中的无应力扩散系数和测试样品的尺寸，样品达到饱和所需的时间估计为100 h。暂定的解释是，水溶液通过与尼龙中的氢键结合，在吸附过程中被拖入样品中。蠕变变形，然后被引入的水溶液使尼龙增塑。这类似于氯化锌水溶液的存在，比普通扩散过程所能合理解释的更深地将溶液物质迁移到样品中。

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