A sol-gel coating composition comprising a hydrolysed organosilane, an organometallic precursor and a corrosion inhibitor, wherein the corrosion inhibitor is a chelator for the organometallic precursor. The corrosion inhibitor and the organometallic precursor may form a nanoparticulate complex. The coating composition may comprise one or more additive selected from: an antimicrobial additive, a hardener, a water repelling additive, a dye, a scratch resistant additive and a flexibility enhancing additive. A process for preparing a sol gel coating composition is also described, the process comprising the steps of: hydrolysing an organosilane in the presence of a catalyst; chelating an organometallic precursor; mixing the hydrolysed silane and the chelated organometallic precursor; and hydrolysing the organosilane-organometallic precursor mixture.
一种溶胶-凝胶涂层组合物,包括
水解的有机
硅烷、有机
金属前体和腐蚀
抑制剂,其中腐蚀
抑制剂是有机
金属前体的
螯合剂。腐蚀
抑制剂和有机
金属前体可以形成纳米颗粒复合物。涂层组合物可以包括以下一种或多种添加剂:抗菌添加剂、硬化剂、防
水添加剂、
染料、耐刮擦添加剂和增强柔韧性添加剂。还描述了一种制备溶胶-凝胶涂层组合物的方法,包括以下步骤:在催化剂存在下
水解有机
硅烷;螯合有机
金属前体;混合
水解
硅烷和螯合有机
金属前体;以及
水解有机
硅烷-有机
金属前体混合物。