二元共晶系相变材料热力学模型的研究

A Study of Thermodynamics Model for Binary Eutectic System Phase Change Material

推导了二元共晶系的热力学模型,改进了单参数的Margules方程,引入了温度项,利用实验值对方程中的参数进行了回归,结果表明该热力学模型是可行的,从而可以应用该模型计算二元共晶系相变材料的最低共熔点和组成。

The thermodynamics model of binary eutectic liquid phase line is presented. The single parameter Margules equation is improved and the temperature added to the parameter. The equation parameters are regressed by the experiment values of five group binary system dodeeanol-stearic acid, palmitic acid, myristie acid, lauric acid, capric acid and this system phase diagram is predicted. The predicted results indicate that this thermodynamics model can be used to predict the eutectic PCM binary system phase diagram and calculate its lowest melting point and composition.