以制冷剂 Ｒ141b 为实验工质，在截面尺寸为 1 mm × 2 mm，壁面接触角分别为 67°、 0°和156°的普通亲水、超亲水及超疏水矩形微细通道进行流动沸腾实验，并对3 种表 面微细通道沿程测点压力进行对比，分析极端润湿性( 超亲水和超疏水) 微细通道内 Ｒ141b 的流动沸腾压降特性． 研究结果表明:极端润湿性微细通道内各压降分量比例和普 通亲水微细通道大致相同，单位长度两相摩擦压降均随着质量通量、入口温度和热流密度 的增大而增大;超疏水表面微细通道进出口总压降最大，是超亲水表面的1． 08 ～1． 17 倍， 且在单相流动区域内的沿程测点压力曲线斜率最小，两相流动区域内的沿程测点压力曲 线斜率最大;引入壁面表面能参数 s 对 Qu-Mudawar 模型进行修正，能更好地预测实验 值，平均绝对误差为10． 7%． 

By using the refrigerant Ｒ141b as the experimental working fluid，a flow boiling experiment was conducted in the ordinary hydrophilic，super-hydrophilic and super-hydrophobic rectangular micro-channels with crosssectional size of 1mm ×2mm and wall contact angles of 67°，0° and 156° respectively， the pressure of three kinds of surface micro-channel along the measuring point was also compared so as to analyze the pressure drop characteristics of Ｒ141b flow boiling in micro-channels with extreme wettability ( super-hydrophilic and super-hydrophobic) ． The results showed that the ratio of pressure drop components in the extreme wetting micro-channel is approximately the same as that of an ordinary hydrophilic micro-channel，and the friction pressure drop of unit length all increase with the rise of mass flux，inlet temperature and heat flux density; The total pressure drop of microchannels with the super-hydrophobic surface is the maximum，which is 1. 08 ～1. 17 times of the super-hydrophilic surface，and the slope of the pressure curve in the single-phase flow area is the smallest and the slope of the pressure curve in the two-phase flow area is the largest; The Qu-Mudawar model was revised by introducing the surface energy parameter s， the new correlation can better predict the experimental value and the average absolute error is 10. 7%．