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实验测定了聚氧化乙烯（ＰＥＯ）和聚醋酸乙烯酯（ＰＶＡｃ）的共混热以及共混组分的热压系数和热膨胀系数．并由上述实测值计算了状态方程参数．用Ｈａｍａｄａ~［１－２］等改进的Ｆｌｏｒｙ状态方程理论估算了ＰＥＯ／ＰＶＡｃ混体系的交换能参数（Ｘ_１２）、相互作用参数（ｘ_１２／ｒ_１）和剩余混合体积（Ｖ~Ｅ／Ｖ~０）．
The heat of mixing of polyethylene oxide (PEO) and polyvinyl acetate (PVAc) and the coefficient of thermal expansion and coefficient of thermal expansion of the blends were experimentally determined. The state equation parameters are calculated from the above measured values. The exchangeable energy parameter (X_12), the interaction parameter (x_12 / r_1) and the remaining mixed volume (V_E / V_0) of the PEO / PVAc mixed system were estimated using the Flory equation of state equation modified by Hamada et al [1-2] ).