Dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance and preparation thereof

A water-based polyurethane and anti-graffiti technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems that affect city appearance and landscape, consume large funds, and damage substrates

Inactive Publication Date: 2012-06-27
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the loss caused by malicious graffiti pasting has attracted more and more people's attention. It not only affects the city appearance a

Method used

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  • Dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance and preparation thereof
  • Dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance and preparation thereof
  • Dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The two-component waterborne polyurethane anti-graffiti and anti-stick coating is composed of A and B components.

[0031] The components A and B are composed in parts by weight as follows:

[0032] A component

[0033]

[0034] B component

[0035] Bayhydur XP2547 20.

[0036] The manufacturing method is as follows: the two-component waterborne polyurethane anti-graffiti and anti-stick coating is prepared by mixing components A and B. The preparation method of component A is: divide the polyacrylic acid resin dispersion into two parts according to the total amount added in a weight ratio of 3:2, namely dispersion 1 and dispersion 2, first add dispersion 1, defoamer win The product Airex901W, wetting agent, dispersant, deionized water, and pigment of Chuang Degussa Company are placed in the dispersing kettle, and the speed is adjusted to 2500 rpm, fully dispersed for 20 minutes, and the fineness is controlled to be ≤ 20um; the speed is adjusted to 1500 rpm , add ...

Embodiment 2

[0041] The two-component waterborne polyurethane anti-graffiti and anti-stick coating is composed of A and B components.

[0042] The components A and B are composed in parts by weight as follows:

[0043] A component

[0044]

[0045]

[0046] B component

[0047] Bayhydur XP2547 20.

[0048] The manufacturing method and film-making method are the same as in Example 1.

[0049] The basic performance test results of the paint film are shown in Table 1.

[0050] Table 2 shows the test results of anti-graffiti and anti-sticking properties of the paint film.

Embodiment 3

[0052] The two-component waterborne polyurethane anti-graffiti and anti-stick coating is composed of A and B components.

[0053] The components A and B are composed in parts by weight as follows:

[0054] A component

[0055]

[0056] B component

[0057] Bayhydur XP2547 20.

[0058] The manufacturing method and film-making method are the same as in Example 1.

[0059] The basic performance test results of the paint film are shown in Table 1.

[0060] Table 2 shows the test results of anti-graffiti and anti-sticking properties of the paint film.

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PUM

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Abstract

The invention discloses a dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance, and a preparation method thereof. The dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance is prepared by using aqueous hydroxy-containing polyacrylic resin dispersion and fatty group polyisocyanate as main film forming substances, adding organosilicon resin emulsion, deionized water, antifoaming agent, wetting agent, dispersant, pigment, dulling agent, wax emulsion and thickening agent and carrying out high speed disperse. The paint has characteristics of high crosslinking density, low surface tension, strong permeability resistance, good scratch resistance, substantial scrawling resistance and pasting resistance, excellent performances of low VOC content, high hardness, good weatherability, brushing resistance and chemical resistance, and is suitable for application fields of municipal public facility, building paint and terrace paint coating, etc.

Description

technical field [0001] The invention belongs to the field of two-component water-based polyurethane coatings, and relates to a functional water-based polyurethane coating with anti-graffiti and anti-sticking properties and a preparation method thereof. Background technique [0002] In recent years, the loss caused by malicious graffiti paste has attracted more and more attention. It not only affects the city appearance and landscape, but also takes time and effort to remove graffiti and various pastes, which is easy to cause damage to the substrate and consumes a lot of money. Random graffiti paste phenomenon occurs from time to time, it is difficult to avoid, therefore, it is necessary to develop coatings with anti-graffiti and anti-sticking functions. [0003] The main difference between anti-graffiti and anti-sticking coatings and other coatings is that the surface adhesion of the substrate coated by it is low, and it is difficult to be adhered by pollutants. To reduce t...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D183/04C09D7/12
Inventor 李芝华王亚周斌周子鹄
Owner CENT SOUTH UNIV
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