Novel anti-corrosion coating and preparation method thereof

Abstract

The invention discloses a novel anti-corrosion coating and a preparation method thereof and solves the problem of reduction of mechanical performances of the coating since a corrosion inhibitor on a fly ash anti-corrosion coating in the prior art is difficult to disperse. In the invention, through a reflux method, phenyl phosphonic acid and a surfactant are grafted on surface of fly ash, wherein the phenyl phosphonic acid and the surfactant are hydrolyzed during a heating process and are connected to a part of hydroxyl groups on the surface of the fly ash. The grafted fly ash finally turns into sea urchin-like granules. The phenyl phosphonic acid increases dispersion of fly ash particles in resin and combination area of the fly ash particles with resin, thereby greatly improving anti-wear performance of coating. The phenyl phosphonic acid and the surfactant can enable the corrosion inhibitor to be dispersed in nano-micro pores in the fly ash more uniformly, thereby achieving the corrosion inhibition effect and improving the anti-corrosion performance of the coating.

Description

technical field [0001] The invention relates to a pipeline anticorrosion coating and a preparation method thereof. Background technique [0002] Fly ash powder is often used as an inorganic filler to improve the mechanical properties, temperature resistance, corrosion resistance and wear resistance of metal pipeline coatings. However, in the preparation process, the fly ash and resin are usually simply mixed and ground. Finally, the performance of fly ash in the coating has not been effectively improved. [0003] The traditional application of corrosion inhibitor is to disperse the corrosion inhibitor into the fluid to prevent corrosion during the flow of the fluid, but this method of utilization is inefficient, and the introduction of the corrosion inhibitor into the solution will pollute the fluid. [0004] In addition, because the resin solution often cannot coexist with water, it is difficult to disperse the water-soluble corrosion inhibitor into the resin. Simply mixin...

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Problems solved by technology

[0003] The traditional application of corrosion inhibitor is to disperse the corrosion inhibitor into the fluid to prevent corrosion during the flow of the fluid, but this utilization method is inefficient, and the introduction of the corrosion inhibitor into the solution will pollute the fluid

[0004] In addition, because the resin solution often cannot coexist with water, it is difficult to disperse the water-soluble corrosion inhibitor into the resin. Simply mixing the corrosion inhibitor with the resin will affect the mechanical properties of the resin to a certain extent, just like adding some foam to the cement wall. Will greatly reduce the mechanical properties of the coating

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