Preparation method of self-repair coating based on corrosion inhibitor intercalated nano-titanate carrier

Abstract

The invention relates to a preparation method of a self-repair coating based on a corrosion inhibitor intercalated nano-titanate carrier. The preparation method comprises the following steps: preparation of layered nano-titanate, preparation of the corrosion inhibitor intercalated nano-carrier and preparation of the self-repair coating, wherein the preparation of the layered nano-titanate comprises the step of grinding K2CO3 and TiO2 solids according to a certain molar ratio; the preparation of the corrosion inhibitor intercalated nano-carrier comprises the steps of taking organic amines, imidazoles, allyl thiourea and other nitrogen-containing organic matters as objects, taking the layered nano-titanate as a subject, and preparing the collision inhibitor intercalated nano-carrier through intercalation reaction in an ethanol solvent under microwave conditions; the preparation of the self-repair coating comprises the step of finally mixing prepared functional particles with sol-gel to prepare a functional sol-gel film to coat on the surface of a metal to be protected. The preparation method disclosed by the invention has the advantages of simplicity in preparation, large loading capacity and corrosion inhibition release-response function, expands the types of loaded corrosion inhibitors, enables an inherent structure of the titanate to tend to be restored, and plays a self-repair role.

Description

technical field

[0001] The invention belongs to the technical field of metal corrosion and protection, in particular to a preparation method of a self-repair coating based on a corrosion inhibitor intercalated nano titanic acid carrier. Background technique

[0002] In recent years, the effectiveness of using organic coatings for metal protection has become a consensus. It is generally believed that the protective effect of organic coatings on metal substrates is mainly reflected in the barrier effect of the coating on water and other aggressive particles, as well as special pigments and seasonings. Corrosion inhibition, passivation, cathodic protection and adhesion between the coating and the metal surface. However, the damage caused by the erosion of the natural environment and coating defects is inevitable, and the erosive particles can reach the coating / coating through these defects. substrate interface, eventually leading to coating failure. So is it possible to create...

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