Preparation method of foamed aluminum matrix loaded with Silicalite-1 molecular sieve anticorrosive film

Abstract

The invention provides a preparation method of a foamed aluminum matrix loaded with a Silicalite-1 molecular sieve anticorrosive film. The preparation method comprises the steps of preparation of a Silicalite-1 molecular sieve synthetic solution, preparation of Silicalite-1 molecular sieve powder, preparation of molecular sieve and coupling agent coating liquid, pretreatment of the foamed aluminummatrix, coating of the foamed aluminum matrix, preparation of the Silicalite-1 molecular sieve anticorrosive film and the like. The preparation method of the foamed aluminum matrix loaded with the Silicalite-1 molecular sieve anticorrosive film, provided by the invention, has the following beneficial effects that the molecular sieve is loaded on the surface of the foamed aluminum matrix; a molecular sieve and a coupling agent are mixed and coated on the surface of the foamed aluminum matrix and then are subjected o hydrothermal crystallization to be prepared into the anticorrosive film, and there is no need to remove a template agent. Through the preparation method, the bonding force between the foamed aluminum matrix and the molecular sieve is remarkably increased, and the foamed aluminum matrix loaded with the Silicalite-1 molecular sieve anticorrosive film is green, environment-friendly and good in anticorrosive capability.

Description

technical field [0001] The invention belongs to the technical field of preparation of porous metal carrier coatings, in particular to a method for preparing a Silicalite-1 molecular sieve anticorrosion film loaded on a foamed aluminum substrate. Background technique [0002] Aluminum foam is a lightweight functional material that has attracted widespread attention because of its high temperature resistance, sound insulation and noise reduction, and excellent electromagnetic shielding performance. However, due to its large specific surface area, the research on corrosion performance and the preparation of anti-corrosion film are of great significance. At present, there are few researches on the surface protection of foamed aluminum, and they mainly focus on the protective effect of surface metal plating or coating. [0003] Molecular sieve membrane is a new type of membrane material with a unique pore structure. By retaining the template agent of the molecular sieve membrane...

AI Technical Summary

Problems solved by technology

There are few reports about molecular sieves loaded on the surface of foamed aluminum, but there are related patent reports. Repeated impregnation in an acidic solution containing tetraethyl orthosilicate, then placed in a high-temperature reactor filled with deionized water for crystallization, and finally calcined to make a molecular sieve membrane, but this patent is mainly used for catalyst carrier coatings The preparation is convenient for the adsorption of active components and cannot be used for anticorrosion

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