水性无机富锌涂料在沿海光伏电站支架防腐的应用研究

STUDY ON THE APPLICATION OF WATERBORNE INORGANIC ZINC-RICH COATINGS IN ANTI-CORROSION OF BRACKET FOR COASTAL PV POWER STATION

随着沿海光伏电站的快速发展,光伏电站的钢结构支架长期处于高盐分、高湿度的海洋大气环境中,受到严重腐蚀。为了解决沿海光伏电站支架构件的腐蚀问题,测试4种不同配方的水性无机富锌涂料的耐腐蚀性和各项性能。结果显示:制备的新型水性无机富锌涂料的含锌量为81.7%、石墨烯纳米材料含量为0.8%时,附着力、铅笔硬度和柔韧性明显提高,涂层外观和成膜性更加完好,耐腐蚀性能大幅提升。研究结果可为沿海光伏电站钢结构支架提供可靠的防腐技术支持。

With the rapid development of coastal PV power stations,the steel structure supports of PV power stations have been seriously corroded in the marine atmosphere with high salinity and humidity for a long time.In order to solve the corrosion problem of the brackets of coastal PV power station,a composite inorganic potassium silicate base solution was prepared by adding silicon-acrylic emulsion into inorganic potassium silicate solution,and the waterborne inorganic zinc-rich coatings were prepared by mixing with four formulas with different zinc powder and graphene nanomaterials content.The corrosion resistance and properties of four kinds of waterborne inorganic zinc-rich coatings were tested by neutral salt spray test,electrochemical corrosion test,electrochemical impedance spectroscopy(EIS),immersion corrosion test and performance test.The results show that when the content of zinc is 81.7% and the content of graphene nanomaterial is 0.8%,the adhesion,pencil hardness and flexibility of the new waterborne inorganic zinc-rich coatings are improved,while the coating appearance and film forming property are better and the corrosion resistance is greatly improved.It provides reliable anti-corrosion technical support for steel structure bracket of coastal PV power station.