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对臭氧安全二元混合物系HFC125／HFC143a和HFC152a／HFC143a进行了泡点、露点实验研究和相平衡关联计算，结果表明前者为近共沸混合物，后者为非共沸混合物。给出了10种低环害二元物系对应于RKS、PR、PT状态方程及二次型混合规则的交互作用系数。
The bubble point, dew point experiment and phase equilibrium correlation calculation of the ozone-safe binary mixtures HFC125 / HFC143a and HFC152a / HFC143a were carried out. The results show that the former is a near-azeotropic mixture and the latter is a non-azeotropic mixture. The interaction coefficients of 10 low-toxicity binary systems corresponding to the RKS, PR, PT equations of state and quadratic mixing rules are given.