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Water-based anti-scrawling coating and preparation method thereof

An anti-graffiti and coating technology, applied in the field of coatings, can solve problems such as durability, poor scrub resistance, non-compliance with environmental protection requirements, and decreased anti-graffiti performance, and achieve the effects of improving shielding performance, solving insufficient environmental protection performance, and improving hydrophobic performance.

Active Publication Date: 2017-06-13
江苏丰彩建材(集团)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned anti-graffiti paint has a very good anti-graffiti effect in a short period of time, but after repeated graffiti removal and physical wear, its anti-graffiti performance will drop sharply, and its durability and scrub resistance are poor. In addition, because the current anti-graffiti paint is mostly oily Coatings, high VOC emissions, do not meet environmental protection requirements

Method used

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  • Water-based anti-scrawling coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] The preparation method of the present embodiment water-based anti-graffiti paint may further comprise the steps:

[0024] The first step, prepare diluted fluorine-containing polyurethane aqueous dispersion: add 40 parts of anionic water-based fluorinated polyurethane and 1 / 4 to 1 / 2 of 10 parts of deionized water into the dispersion tank according to the proportion by weight. Stir evenly to obtain a diluted fluorine-containing polyurethane aqueous dispersion;

[0025] The second step, preparation of nanocomposite dispersion: 10 parts of natural layered silicate minerals (such as montmorillonite) are added to the diluted fluorine-containing polyurethane aqueous dispersion in proportion by weight, and stirred at a speed of 400rpm After 10 minutes, add 2 parts of glycidyl etheroxypropyl trimethoxysilane, ultrasonically disperse for 10 minutes to mix evenly, and obtain a nanocomposite dispersion;

[0026] The third step, prepare the color paste: add 5 parts of titanium diox...

Embodiment 2

[0029] The preparation method of the present embodiment water-based anti-graffiti paint may further comprise the steps:

[0030] The first step, prepare diluted fluorine-containing polyurethane aqueous dispersion: add 30 parts of anionic water-based fluorinated polyurethane and 1 / 4 to 1 / 2 of 5 parts of deionized water into the dispersion tank according to the proportion by weight. Stir evenly to obtain a diluted fluorine-containing polyurethane aqueous dispersion;

[0031] The second step, preparation of nanocomposite dispersion liquid: 5 parts of natural layered silicate minerals (such as montmorillonite) are added to the diluted fluorine-containing polyurethane aqueous dispersion according to the proportion by weight, and stirred at a speed of 500rpm After 15 minutes, add 4 parts of glycidyl etheroxypropyl trimethoxysilane, ultrasonically disperse for 15 minutes to mix evenly, and obtain a nanocomposite dispersion;

[0032] The third step is to prepare the color paste: add ...

Embodiment 3

[0035] The preparation method of the present embodiment water-based anti-graffiti paint may further comprise the steps:

[0036] The first step, prepare diluted fluorine-containing polyurethane aqueous dispersion: add 60 parts of anionic water-based fluorinated polyurethane and 1 / 4 to 1 / 2 of 20 parts of deionized water into the dispersion tank according to the proportion by weight. Stir evenly to obtain a diluted fluorine-containing polyurethane aqueous dispersion;

[0037] The second step, preparation of nanocomposite dispersion liquid: 15 parts of natural layered silicate minerals (such as montmorillonite) are added to the diluted fluorine-containing polyurethane aqueous dispersion according to the proportion by weight, and stirred at a rotating speed of 600rpm After 10 minutes, add 5 parts of vinyltriethoxysilane, and ultrasonically disperse for 12 minutes to make it evenly mixed to obtain a nanocomposite dispersion;

[0038] The third step, prepare the color paste: add 15...

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Abstract

The invention relates to a water-based anti-scrawling coating which is prepared from the following raw materials in parts by weight: 30-60 parts of fluorinated polyurethane, 1-15 parts of nanometer aluminosilicate, 0.5-5 parts of a cross-linking agent, 5-15 parts of pigment, 10-40 parts of padding, 0.1-1 part of a de-foaming agent, 0.2-2 parts of a coalescing agent, 0.2-0.4 part of an antiseptic mildew preventive, 0.2-0.5 part of a thickening agent, 0.1-0.5 part of a dispersing agent and 5-20 parts of deionized water. The invention has the advantages that the synthetic method is simple; the problems of poor long-lasting property and environment-friendly performance of the present fluorine-containing low-surface energy anti-scrawling coating are solved; the shielding performance, anti-scrawling property, weather fastness, scrubbing resistance and adhering resistance of the coating are promoted; the adhesive force of the coating to a coated substrate is excellent; and the water-based anti-scrawling coating is full water-borne, environment-friendly and nontoxic, can be applied to walls, glass and panels and even can be applied to surfaces of porous stone materials.

Description

technical field [0001] The invention relates to a water-based anti-graffiti coating and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] In recent years, the phenomenon of graffiti on urban buildings and public facilities has increased. Graffiti not only seriously affects the cityscape, but also damages the image of the region, causing headaches for city managers and residents. Government agencies have invested a lot of manpower, material and financial resources in cleaning up the small advertisements and graffiti that can be seen everywhere. In order to remove graffiti pollution quickly and effectively, a barrier can be established between the surface to be protected and the contaminated material, that is, an anti-graffiti coating, which makes graffiti difficult to carry out and graffiti pollution to be easily removed. Give the surface of the object a layer of low surface energy anti-fouling coating, which can effec...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/16C09D7/12
Inventor 朱殿奎沈志明李娟李晴李文李安宁杨亚萍
Owner 江苏丰彩建材(集团)有限公司