低表面能有机纳米复合涂料的制备及其性能

Preparation of Organic Nanocomposite Coating with Low Surface Energy and Its Performance

输电线缆结冰一直是困扰电网安全建设的突出问题。利用纳米介孔分子筛复合氟硅改性丙烯酸乳液以及有机硅树脂,通过表面微相设计,结合无机材料强化涂料性能,根据电网搭建实际需要,制备一种室温固化的低表面能有机纳米复合涂料。讨论了纳米介孔分子筛和含氟添加剂对涂层性能的影响,分析了涂层表面微观形貌,并进行了脱冰剪切强度测试及模拟覆冰实验。结果表明:制备的涂层具有超疏水性能,水在平面上的接触角达到155°,滚动角为3. 5°,脱冰效率达到90%以上,可以有效预防线缆结冰。

Transmission lines icing has been a serious problem in the safe construction of the power grid. Based on the integration of the nano-mesoporous molecular sieve, fluorosilicon modified acrylic emulsion and the organosilicon resin, through the surface micro design, combined with inorganic-enhanced coating materials, an organic nanocomposite coating with low surface energy is prepared. This coating can be cured at room temperature, which meets the rigid requirement of cable laying. The influences of nano-mesoporous molecular sieves and fluorinated additive on the coating performance were discussed, the surface microstructure of the coating was analyzed, and deicing shear strength test and icing experiments were performed in the simulated condition. The results show that the prepared coating possesses superhydrophobic properties, the contact angle of water on the plane is 155°, the rolling angle is 3.5°, and the deicing efficiency reaches more than 90%, which can effectively prevent the cable from freezing.