Polyaniline-containing polyaspartate polyurea anti-corrosive paint and preparation method thereof

Abstract

The invention provides polyaniline-containing polyaspartate polyurea anti-corrosive paint and a preparation method thereof and belongs to the technical field of anti-corrosive paint. The paint is prepared from a component A and a component B, wherein the component A is prepared from polyaspartate resin, a solvent, eigenstate polyaniline, pigment, functional filler, a thixotropic agent, an ultraviolet absorbent and additives; and the component B is a curing agent. The preparation method comprises the following steps: preparing the component A; weighing the component B; respectively packaging the component A and the component B; and uniformly mixing the component A with the component B before use under the condition that the molar ratio of the hydroxyl group-OH of the component A to the isocyanate group-NCO of the component B is (1.0-1.2):1.0 so as to obtain the paint provided by the invention. The paint has excellent weather resistance, adhesive force and chemical corrosion resistance,the solid content reaches 90% or above, zero VOC emission or ultra-low VOC emission is realized, the required film thickness can be obtained by construction once, the construction frequency is reduced, the working efficiency is improved, the construction period is shortened, and the cost is greatly reduceed.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion coatings, in particular to polyaniline-containing polyaspartate polyurea anticorrosion coatings and a preparation method thereof. Background technique [0002] At present, the economic loss caused by corrosion of metal materials in our country is relatively serious every year, accounting for about 5% of the gross national product, causing a large number of infrastructure equipment to be scrapped, which has become the most important cause of equipment loss. my country's current corrosion loss is higher than that of developed countries, and it is generally accepted internationally that the loss caused by marine corrosion is far greater than the loss caused by natural disasters. From the perspective of the economics of anti-corrosion treatment, the use of anti-corrosion coatings is the most economical and effective method. Traditional anti-corrosion coatings are mostly solvent-based coatings, ...

AI Technical Summary

Problems solved by technology

Traditional anti-corrosion coatings are mostly solvent-based coatings, which have the disadvantages of large VOC emissions, environmental pollution, and short anti-corrosion life. Therefore, in order to meet the special anti-corrosion requirements of emerging marine engineering, modern transportation, energy industry, large chemical enterprises, and municipal facilities , it is urgent to develop a new type of heavy-duty anti-corrosion coating

[0003] Traditional aromatic polyurea coatings are prone to yellowing and fading when used outdoors, the reaction speed is too fast, the gel time is short (3s~5s), the wetting ability to the substrate is weak, the adhesion is poor, and the application period is too short. A series of problems such as the use of special equipment for construction

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