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Double-component water-based polyurethane high-abrasion-resistance matte varnish and preparation thereof

A water-based polyurethane, two-component technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor dispersion stability of matting powder, increase the complexity of construction process, uneven dispersion of matting powder, etc., and achieve matting Remarkable effect, stable and uniform dispersion effect, good cross-linking and curing performance

Inactive Publication Date: 2012-07-04
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion stability of directly adding matting powder is not good, and sedimentation and agglomeration are prone to occur during storage
The method of adding matting paste increases the complexity of the construction process, and reduces the performance of the coating due to the uneven dispersion of the matting powder.

Method used

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  • Double-component water-based polyurethane high-abrasion-resistance matte varnish and preparation thereof
  • Double-component water-based polyurethane high-abrasion-resistance matte varnish and preparation thereof
  • Double-component water-based polyurethane high-abrasion-resistance matte varnish and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Two-component water-based polyurethane wear-resistant matte varnish consists of A and B components.

[0032] The components A and B are composed in parts by weight as follows:

[0033]

[0034] The manufacturing method is as follows: the two-component water-based polyurethane wear-resistant matte varnish is prepared from component A and component B. The preparation process of component A is as follows: First, add deionized water into the dispersing tank, start the dispersing machine, adjust the speed to 800 rpm, and put in Bayhydrol XP 2546, wetting agent, defoamer, dispersant, thickener, Matting agent, adjust the speed at 1500 rpm, fully disperse for 20-30 minutes; adjust the speed at 300-500 rpm, then add Bayhydrol XP 2542, leveling agent, film-forming aid, wear-resistant additive, thickener, continue Disperse for 10-15 minutes. After the dispersion is completed, the material is discharged. A component is prepared. B component is Bayer's water-based polyurethan...

Embodiment 2

[0038] Two-component water-based polyurethane wear-resistant matte varnish consists of A and B components.

[0039]The components A and B are composed in parts by weight as follows:

[0040]

[0041] The manufacturing method and film-making method are the same as in Example 1.

[0042] The test results are shown in Table 1.

Embodiment 3

[0044] Two-component water-based polyurethane wear-resistant matte varnish consists of A and B components.

[0045] The components A and B are composed in parts by weight as follows:

[0046]

[0047]

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

[0049] The test results are shown in Table 1.

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Abstract

The invention discloses a double-component water-based polyurethane high-abrasion-resistance matte coating and a preparation thereof. The coating comprises two components A and B, wherein the component A is prepared by using an acrylic resin dispersion body as a basic component and adding deionized water, a wetting agent, a defoaming agent, a dispersing agent, a thickening agent, a delustering agent, a leveling agent, a film forming additive and a water resistant additive to the acrylic resin dispersion body to disperse the acrylic resin dispersion body; and the component B is aliphatic polyisocyanate. The invention provides a water-based matte coating with low VOC (Volatile Organic Compounds), low gloss, good adhesion force, wear resistance and corrosion resistance; and the water-based matte coating can be very well combined with a water-based or solvent type epoxy resin floor coating and a polyurethane floor coating. The water-based matte coating disclosed by the invention has the advantages of low delustering agent adding quantity and stability in storage; the gloss of the coating system can be effectively reduced; and the comprehensive performance of the coating system is improved. By using the double-component water-based polyurethane high-abrasion-resistance matte coating disclosed by the invention, the water-based coating system solution with environment friendliness, high performance, stability in storage and low cost can be provided.

Description

technical field [0001] The invention belongs to the field of two-component water-based polyurethane coatings, relates to the application of water-based polyurethane coatings in the field of floors, in particular to a two-component water-based polyurethane high wear-resistant matte varnish and a preparation method thereof. Background technique [0002] Two-component water-based polyurethane coatings are high-performance, environmentally friendly new coating products developed in recent years. Two-component water-based polyurethane coatings do not contain organic solvents, have the advantages of non-toxic, non-flammable, energy-saving, not easy to damage the surface to be painted, and easy to use. The mechanical properties are also comparable to solvent-based polyurethane coatings. Two-component waterborne polyurethane coatings have been applied in the fields of wood coatings, architectural coatings, fabrics and leather finishing, but due to the high price of two-component wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
Inventor 李芝华王亚周斌周子鹄
Owner CENT SOUTH UNIV
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