Organic and inorganic composite coating and steel plate possessing coating thereof and manufacture method

Abstract

The invention relates to an organic and an inorganic composite coating, a fingerprint resistant electro-zinc steel plate possessing the coatings and a manufacture method. The organic and inorganic composite surface transparent coating can be coated on the electro-zinc layer on the surface of the fingerprint resistant electro-zinc steel plate, the composition comprises the following raw materials: water-soluble / water dispersible system resin, a silane compound, amine ester, organic metal system salt, aqueous system wax and deionized water; wherein, by reacting water-soluble / water dispersible system resin and the organic metal system salt, an organic and inorganic composite membrane is formed on the electro-zinc layer on the surface of the electro-zinc steel plate, so that the composite membrane has excellence conductive performance, corrosion resistance, fingerprint resistance, dark resistance, and subsequent processing performance, and the composite membrane does not contain hexavalent metal chromium ions, acid or alkali treatment is not required, so that environmental protection demand can be accorded, so that usage efficiency of the fingerprint resistant electro-zinc steel plate is increased.

Description

technical field [0001] The invention relates to an organic-inorganic composite surface transparent coating, a fingerprint-resistant electrogalvanized steel sheet with the surface transparent coating and a manufacturing method thereof, wherein the organic-inorganic composite surface transparent coating has simple composition and good fingerprint resistance, And it can replace the way of surface passivation with chromate, which has good affinity for the environment; and the passivation film formed by the transparent coating on the surface is uniform and compact, has strong binding force with electro-galvanized steel plate, high ductility, and has Good anti-corrosion and anti-blackening capabilities make the electro-galvanized steel sheet suitable for subsequent processing to improve the use efficiency of household appliances, office products and other related industries. Background technique [0002] Since the electro-galvanized layer can improve the corrosion resistance of th...

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Problems solved by technology

Thus, a kind of water-based resin coating is directly processed by modified acrylic resin as the surface coating passivation of electrogalvanized steel sheet, although this resin coating has good fingerprint resistance, because the hardness is too high, after the surface coating film It has no ductility and is not suitable for the subsequent processing of electro-galvanized steel sheets, such as cracks during stamping and forming; in addition, a single resin coating still cannot effectively inhibit the generation of white rust, and its anti-corrosion and anti-blackening capabilities The effect is not good and cannot effectively overcome problems such as long-term storage

In order to further improve the corrosion resistance, there have been relevant researches and previous technologies in recent years. Most of these previous technologies are prepared by adding different metal salt systems to water-based resins. For example, US Patent No. 6,736,908 discloses a special resin The coating also contains metal components such as Zr, Mo, W, Mn, Ti, and Ce, but as far as the coating components are concerned, it has problems and shortcomings such as complex components and difficult preparation

[0006] It can be seen from the above that the above-mentioned prior art is still difficult to meet the requirements of actual use. In the field, there is still a need for further improvement

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