Water-based double-component anti-doodling paint

Abstract

The invention relates to a water-based double-component anti-doodling paint which is a double-component paint composed of a component A and a component B. The component A comprises the following components in percentage by weight: 15-35 wt% of water-based hydroxy polyacrylate dispersion, 15-35 wt% of organosiloxane-modified water-based hydroxy polyacrylic resin, 5-15 wt% of ultraviolet-resistant filler, 0.1-0.6 wt% of defoaming agent, 0.5-1.5 wt% of leveling agent, 0.5-2 wt% of anti-aging agent, 0.5-1 wt% of wetting and dispersing agent and the balance of water, totaling 100 wt%. The component B comprises the following components in percentage by weight: 60-80 wt% of hydrophilic modified aliphatic polyisocyanate curing agent and the balance of solvent, totaling 100 wt%. The ultraviolet-resistant filler is selected from rutile titanium white. The anti-doodling paint provided by the invention has the advantages of favorable water resistance, excellent aging resistance, high medium and pollution resistance and obvious self-cleaning action.

Description

technical field [0001] The invention belongs to the technical field of environmental protection coatings, and relates to a water-based two-component anti-graffiti coating. Background technique [0002] Small street advertisements have become an incurable disease hated by the government and citizens, especially in public places or tourist attractions with a large number of people. It not only seriously affects the image of a city, but also brings great troubles to advertising management. [0003] Anti-graffiti paint is a kind of paint with special surface function, the surface has low surface tension, the lotus leaf-shaped surface has self-cleaning effect, dirt rolls off naturally, and the self-adhesive paper will fall off easily after being pasted. Most of the existing anti-graffiti coatings are solvent-based anti-graffiti coatings, which have the following problems: [0004] (1) Use a large amount of solvents, high VOC, pollute the air, and affect the health of constructio...

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Problems solved by technology

[0007] (4) It is difficult to clean solvent-based paint coating equipment, which must be cleaned with a strong solvent, which also has the risk of solvent poisoning and explosion;

[0008] (5) Solvent-based anti-graffiti coatings have low surface energy and poor hydrophilicity. In addition, the places where they are located are mostly outdoors, and they are easily polluted by rainwater and dust in the air, resulting in rain-like pollution, which affects the appearance of buildings. ;

[0009] (6) Solvent-based anti-graffiti coatings mostly use ordinary titanium dioxide as a weather-resistant filler, and its weather-resistant effect is poor

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