本发明公开了一种抗菌净化彩涂板的制备方法，主要包括彩涂板表面活化、改性枝接剂的制备、枝接层涂覆和抗菌净化涂层涂覆四个步骤。所述基材为彩涂板保证基材有很好的耐蚀性及应用的广泛性；所述改性枝接剂对有机漆膜有良好的浸润性，并且含有可以与无机纳米颗粒反应的硅羟基基团和与基板有良好反应性及相容

性的有机基团；所述枝接层可以有效的将有机基底和无机纳米颗粒枝接起来，形成Si-O-Ti键，保证抗菌净化涂层与基板之间良好的附着力。本发明公开的抗菌净化彩涂板制备技术，不仅可以大幅度提升抗菌净化涂层与基板之间的附着力，减少涂层在使用过中的脱落情况，增加彩涂板抗菌净化性能的使用寿命。

The invention discloses a preparation method of an antibacterial purifying color-coated sheet. The method mainly includes the following four steps: surface activation of a color-coated sheet, preparation of a modified grafting agent, coating of a graft layer and coating of an antibacterial purifying coating. The base material is a color-coated sheet, and the base material is ensured with good corrosion resistance and wide application; the modified grafting agent has good wet-ability to an organic paint film, and also contains silicon hydroxyl group capable of reacting with inorganic nanoparticles and organic groups having good reactivity and compatibility with the substrate; the graft layer can effectively graft an organic base and inorganic nanoparticles to form a Si-O-Ti bond, thus guaranteeing good adhesion between the antibacterial purifying coating and the substrate. The preparation technology of the antibacterial purifying color-coated sheet disclosed by the invention not only can greatly improve the adhesion between the antibacterial purifying coating and the substrate, reduces the coating falling circumstance during use, but also increases the service life of the color-coated sheet's antibacterial purifying performance.