Relative permittivity measurements of 1,1,1,2-tetrafluoroethane (HFC 134a), pentafluoroethane (HFC 125), and difluoromethane (HFC 32)
Relative permittivity measurements of 1,1,1,2-tetrafluoroethane (HFC 134a), pentafluoroethane (HFC 125), and difluoromethane (HFC 32)
复制标题
1,1,1,2-四氟乙烷 (HFC 134a)、五氟乙烷 (HFC 125) 和二氟甲烷 (HFC 32) 的相对介电常数测量
DOI：
10.1021/je980130b
复制
发表时间：
1999
期刊：
影响因子：
8.8
通讯作者：
R. Tooth
中科院分区：
文献类型：
--
作者：
A. Abbott;C. Eardley;R. Tooth
测量HFC 134 a、HFC 32和HFC 125的相对介电常数作为温度和压力的函数，以涵盖液态和气态。研究的温度范围为303至403 K，压力范围为4.0至30.0 MPa。相对介电常数{p}可以使用函数（{p} {minus} 1）/（2{p} + 1）拟合到约化密度{rho}{sub r}。计算了HFC 134 a在液相中的偶极矩.
The relative permittivity of HFC 134a, HFC 32, and HFC 125 was measured as a function of temperature and pressure, to cover the liquid and gaseous states. The temperature range studied was 303 to 403 K, and the pressure range was 4.0 to 30.0 MPa. The relative permittivity, {epsilon}, could be fitted to the reduced density {rho}{sub r} using the function ({epsilon} {minus} 1)/(2{epsilon} + 1). The dipole moment of HFC 134 a in the liquid phase has been calculated.