变电站预制舱舱体不同防腐蚀材料性能评价

Performance Evaluation of Anti-Corrosive Materials for Prefabricated Cabin in Substations

预制舱的防腐蚀性能是确保预制舱模块化变电站40 a使用寿命的重要指标,所使用的腐蚀防护材料至关重要。选取了8种舱体防护材料,包括:电镀锌层、热镀锌镀层、热镀锌增厚镀层、锌铝镁镀层、氟碳漆复合涂层、石墨烯富锌涂层、热镀锌+聚氨酯双层涂层和热镀锌+聚氨酯超疏水双层涂层,研究了基底与这些涂/镀层结合性能以及防腐性能,以为后续变电站防腐蚀材料的选择提供参考。涂层附着力试验结果表明,所有涂/镀层材料与基底的结合性能均较好;中性盐雾结果表明热镀锌或者热镀锌镁铝工艺相比于电镀锌板显示出较好的耐腐蚀性,热镀锌+聚氨酯双涂层工艺显示出了更好的耐腐性,若赋予表面疏水性能,则可在大幅度提高其耐腐蚀性外还具有一定的自清洁功能。

The corrosion resistance performance of prefabricated cabin is an important indicator assuring the 40 a service life of the prefabricated module cabin substation,so the selection of the anti-corrosion materials used is crucial.In this research,eight cabin protection materials(electro-galvanized coating,hot-dip galvanized coating,hot-dip galvanized thickened coating,zinc aluminum magnesium coating,fluorocarbon paint composite coating,graphene zinc-rich coating,hot-dip galvanized+polyurethane double layer coating and hot-dip galvanized+polyurethane superhydrophobic double layer coating)were selected to study the bonding performance and anti-corrosion performance between the substrate and these coatings/plating layers and had provided a reference for the selection of subsequent anti-corrosion materials for substations.The coating adhesion test results showed that all coating/plating materials had good bonding properties with the substrate;the neutral salt spray(NSS)test results showed that the hot-dip galvanized and hot-dip galvanized magnesium-aluminum process showed better resistance to corrosion than the electro-galvanized sheet.The hot-dip galvanized+polyurethane double-coating process showed better corrosion resistance.In addition,if the surface is given hydrophobic properties,its corrosion resistance can be greatly improved and it also has a certain self-cleaning function.