磁控溅射制备聚四氟乙烯低温超疏水薄膜

Low Temperature Super-Hydrophobicity of Magnetron Sputtered Polytetrafluoroethylene Coatings

针对输电线路工程中绝缘子的低温防结冰要求,采用磁控溅射技术在玻璃基底上制备聚四氟乙烯低温超疏水薄膜,研究了溅射制备工艺参数对薄膜超疏水性能的影响,并探究了薄膜的低温超疏水性能。利用水接触角测量仪,扫描电子显微镜以及表面轮廓仪分别对薄膜表面的润湿性能、表面形貌、膜厚以及粗糙度进行表征。结果表明,用磁控溅射工艺制备的聚四氟乙烯薄膜具有优异的疏水性能,其表面的最大静态水接触角可达170°±3°,并在低温下能够保持其超疏水的性能。

The low-temperature super-hydrophobic polytetrafluoroethylene（ PTFE） coatings,as a promising anti-icing material on surfaces of power transmission-line insulator,were deposited by RF magnetron sputtering on glass substrate. The impact of the growth conditions,including the sputtering power and time,substrate temperature,and argon pressure,on the super-hydrophobicity,durability,and surface roughness of the PTFE coatings was investigated in orthogonal test design and with drop-meter,scanning electron microscopy and surface profiler. The results show that the PTFE coatings,deposited under the optimized conditions,have the largest water contact angle of 170°± 3° and possesse an excellent super-hydrophobicity at a temperature lower than frozen point of water.