The effect of the composition of the hydrocarbon mixture on the transfer in thermoplastic polyurethanes

Y. N. Rybakov, A. Dedov, D. Kolotilin, R. I. Kunnap
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Abstract

The transfer of mixtures of hexane and toluene in thermoplastic polyurethanes used in the production of tanks for temporary storage and transportation of liquid fuels has been investigated. The standard methodology for estimating the diffusion permeability of polymers is not the basis for modeling the natural loss of fuels during storage. A model for estimating natural loss is proposed, the equations of which describe the linear dependences of the decrease in the mass of fuels in tanks in the coordinate of a conditional time equal to the square root of time. The efficiency of the proposed model depends on the composition of the hexane-toluene mixture, since the composition of the mixture affects the limiting stage of the process, which determines the dependence of the natural loss either on the diffusion rate of the fuel in the tank shell, or on the volatilization of the released fuel from the outer surface of the tank.
烃类混合物的组成对热塑性聚氨酯中转移的影响
研究了用于生产临时储存和运输液体燃料的储罐的热塑性聚氨酯中己烷和甲苯混合物的转移。估计聚合物扩散渗透率的标准方法并不是模拟燃料在贮存期间自然损失的基础。提出了一种估计自然损失的模型,该模型的方程描述了燃料箱中燃料质量的减少在一个条件时间等于时间的平方根的坐标上的线性关系。所提出的模型的效率取决于正己烷-甲苯混合物的组成,因为混合物的组成影响过程的限制阶段,这决定了自然损失取决于燃料在罐壳内的扩散速率,或者取决于从罐外表面释放的燃料的挥发。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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