Preparation And Characterization Of The Polymer-Metal Titanium Flake

Adding nano-coating materials to paints have formed one of the developing trend to contemporary paint to enhance the coatings'properties. The polymer titanium flak with two dimensional structure was produced by high energy ball milling method and characterized by IR, XRD, XPS, TEM, SEM and TG methods; The properties of the coating were analysed after adding the polymer-metal titanium flak.Various factors of polymer-metal titanium flak were studied, and the results of experiment were obtained by combining single-factor and orthogonal factors on the based of analysis settlement experiments. The results showed that the ratio of xylene, acetone, butanol was 2∶2∶1.The polymer were composed by amino resin MF, epoxy resin E-51, silane coupling agent KH-550 and Thiokol and their volume were 8g, 10g, 8g and 8g. The optimum milling time was 4h, milling revolutions was 450 r·min^-1, ball ratio was 4∶1, respectively.The polymer titanium flak characterization showed that, titanium surface was basically covered with polymer coating; diameter of polymer-scale titanium film was less than 100nm, film thickness was less than 80nm, and fully accorded with the nano level and more evenly dispersed samples; the outer and the inner layer of polymer-scale titanium were combined with physical adsorption, inner layer of polymer and titanium were combined eith chemical adsorption.Polymer-scale titanium scattered evenly in the coating matrix. Mechanical properties, such as adhesion, hardness, wear resistance and chemical resistance properties were significantly increased, if amount of the polymer-scale titanium was increased.The performance of coatings could be greatly improved by adding polymer-metal titanium flak since the polymer of the polymer-scale titanium surface could react with the matrix resin of coating to form network structure, and further significantly improve coating density and corrosion resistance, and thus enhanced the coating's mechanical properties. Small size effect of polymer-scale titanium could fill the microporous structure created by coating solidifcation, which could jam the access from the substrate to the outside world and enabl improve coating surface roughness. "Labyrinth effect" which could delay corrosion was obtained by adding the polymer-metal scales flake titanium to the coating because of the flake structure of titanium.