Composite nanometer anti-corrosion coating of shell-imitation structure and preparation method thereof

Abstract

The invention relates to a composite nanometer anti-corrosion coating of a shell-imitation structure and a preparation method thereof. Firstly, flaky nanometer metal and flaky nanometer MXene are uniformly mixed; then, solvents and dispersion agents are added to obtain uniform MXene-metal composite dispersion liquid; next, resin is added to obtain a mixed solution; next, anti-foaming agents, curing agents, leveling agents, thickening agents, surface modification agents, corrosion inhibitors and complexing agents are sequentially added into the mixed solution and are uniformly mixed to obtain the composite nanometer anti-corrosion paint; finally, the composite nanometer anti-corrosion paint is coated onto the surface of the substrate to obtain the composite nanometer anti-corrosion coating.The preparation method provided by the invention has the advantages that the acid washing and the phosphatization are not needed; the investment of a great number of coal resources for heat supply isnot needed; the preparation process is simple and convenient; the energy consumption is low. The prepared composite nanometer anti-corrosion coating of the shell-imitation structure has the advantages that the Zn content is low; the adsorption effect between the filling materials and the resin is good; a good conductive path is formed by the MXene-metal sheet layer structure; the corrosion can beinhibited; the anti-ultraviolet ageing time is long; good economic and environment protection values and practical popularization values are realized.

Description

Technical field [0001] The invention belongs to the field of metal anticorrosion, and relates to a composite nano anticorrosive coating with a shell-like structure and a preparation method thereof. Background technique [0002] With the prosperity of industry, the use of metal materials has spread throughout all areas of the national economy. However, the corrosion problem of steel structures has caused huge losses in production, and even endangers the lives of operators. Therefore, metal anti-corrosion technology is also increasing. It is generally valued by people. [0003] At present, hot-dip galvanizing is one of the mainstream anti-corrosion technologies. The core is the use of electrochemical mechanisms to provide steel structure anti-corrosion coatings through a series of processes such as washing, pickling, immersion, hot-dip, and cooling. Anti-corrosion effect, but the process is complicated, the heating and cooling are high energy consumption and the serious environmenta...

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Problems solved by technology

[0003] At present, hot-dip galvanizing is one of the mainstream anti-corrosion technologies. The core is to use electrochemical mechanisms to provide steel structure anti-corrosion coatings through a series of processes such as washing, pickling, dipping, hot-dip, cooling, etc., which has played a certain role. Anti-corrosion effect, but the complex process links, high energy consumption in heating and cooling links, and serious environmental pollution caused by pickling waste. In addition, the zinc powder content in the anti-corrosion coating is generally not less than 77% of the dry film quality. It brings a series of problems, such as serious bottoming phenomenon is easy to occur during storage, which is a threat to the health of workers. When the stress is too large, it will cause the surface coating of the steel structure to crack, causing water to penetrate and corrode the steel structure. The performance is still There are limitations

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