摘要： 针对现有防污闪涂料寿命短、难复涂的问题，以 FEVE 氟碳树脂为成膜物，以纳米气相SiO₂ 、微米聚四氟乙烯蜡粉、纳米金红石型 TiO₂ 等为填料，与钛酸酯偶联剂及其他功能助剂制备了一种新型防污闪氟碳涂料。 按国家与电力行业相关标准对其进行了理化与电气性能检测、户外曝晒及带电运行试验。 试验结果表明：新型防污闪氟碳涂料的耐候性、耐化学药品性、附着力、硬度等符合国家标准 DL/T 627—2012要求，涂层水性接触角超过 120°，体积电阻率、击穿场强、耐漏电起痕及电蚀损、相对介电常数与介电强度等电气性能满足防污闪要求；带电运行试验表明：涂覆防污闪氟碳涂料的绝缘子污秽严重程度可控制在 E1 内，运行中未出现刷状放电情况。 试验表明：新型防污闪氟碳涂料性能优良，可以应用于高压绝缘子防污闪。

关键词: 氟碳涂料, 防污闪, 绝缘子, 偶联剂, 憎水性

Abstract: A novel anti-pollution flashover fluorocarbon coating was prepared by using fluorocarbon resin as binder and nano-SiO₂ micro-PTFE, nano-rutile-TiO₂ as filler in addition to titanate coupling agent and other functional additives, with the purpose of solving the problems of short service life and recoatability of the existing anti-pollution flashover coatings.The physicochemical and electrical properties test, outdoor exposure test and the charged operationtest of anti-pollution flashover fluorocarbon coating were proceeded according to relevant national standard and power industry standard. The experimental results showed that the properties including weatherability, chemical resistance, adhesion and hardness of the novelanti-pollution flashover fluorocarbon coating were qualified to national standards. The water contact angle of the superhydrophobic coating was more than 120°. The electrical properties(e. g. volume resistivity, breakdown strength tracking and erosion resisting capability,relative dielectric constant and dielectric strength, etc. )met the antifouling requirements.The charged operation test showed that the insulator coated with anti-pollution flashover fluorocarbon coating gave a controlled filthy severity of E1 and caused no brush discharge during operation. The experimental results show that the novel anti-pollution flashover fluorocarboncoating has excellent performance and can be applied to high voltage insulator.

Key words: fluorocarbon coatings, anti-pollution flashover, Insulator, couplingagent, hydrophobicity