【摘要】 采用静态法,利用汽相循环汽液平衡釜测定了全氟甲基乙烯基醚在248.15～338.35K(±0.01K)的饱和蒸汽压(对于压力在0～150kPa,150～400kPa以及大于400kPa,测量精度分别为±0.05kPa,±0.4kPa以及±2.1kPa),并用Antoine方程lnP=A-B/(T+C)进行关联,确定了蒸汽压方程的三个参数A=13.1066,B=1656.22,C=-52.6210。全氟甲基乙烯基醚饱和蒸汽压测量值与上述Antoine方程关联值吻合很好,偏差均在1%以内。更多还原

【Abstract】 Saturated vapor pressures of perfluoromethyl vinyl ether(PVE) were measured in the temperature range of 248.15～338.35 K by static method in a vapor-liquid equilibrium still with vapor recycling system.A precision mercury thermometer with accuracy of ±0.01 K was used.The accuracy of measured pressure is ± 0.05 kPa for the range of 0～150 kPa,±0.4 kPa for 150～400 kPa and ±2.1 kPa for higher than 400 kPa.The measured saturated vapor pressures and temperatures of PVE were correlated by Antoine equation lnP=A-B(T+C) with the results of A=13.1066,B=1656.22,C=?52.6210.The average deviations between the PVE saturated vapor pressures calculated from the above correlated equation and the experimental data are less than 1%,and this indicates that the correlated values of PVE saturated vapor pressure agree well with the measured ones.更多还原