Waterborne double-component wood coating

A wood coating, two-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the hardness and scratch resistance of the paint film, the chemical resistance is not high, the degree of cross-linking is not dense enough, and the film is formed. The quality of the product is not guaranteed, and the effect of high hardness, good water resistance and simple production process is achieved.

Inactive Publication Date: 2019-01-08
嘉善蓝欣涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component water-based wood coatings have the advantages of high market acceptance and low price, but there are certain requirements for construction temperature and humidity, and the drying speed of the paint film is slow, and the degree of crosslinking is not high enough to form a paint film that is not dense enough. The quality of film formation is not guaranteed, so the film hardness, scratch resistance and chemical resistance of one-component water-based paint are not high, and it is difficult to meet some high-demand furniture coatings

Method used

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  • Waterborne double-component wood coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The water-based two-component wood coating is prepared from two parts, the main agent and the curing agent, and the mass ratio of the main agent to the curing agent is 1:1.5.

[0021] The main agent includes the following components: 50% acrylic emulsion, 23% water-based polyurethane dispersion, 4% film-forming aid, 1.2% wetting agent, 0.8% leveling agent, 1.6% defoamer, 1.5% wax, 0.6% preservative, 2.3% ultraviolet absorber, and 15% water; wherein the ultraviolet absorber is a mixture of benzophenone:aromatic β-diketone, and its mass ratio is 1:1.3.

[0022] By mass percentage, the curing agent includes the following components: 40% propylene glycol diacetate and 60% cyanate mixture; the cyanate mixture is a mixture of water-based isocyanate and hydrogenated xylylene diisocyanate, which The mass ratio is 1.5:1.

[0023] Prepare as follows:

[0024] (1) Preparation of main ingredient: Stir acrylic emulsion and water-based polyurethane dispersion at high speed, then ad...

Embodiment 2

[0028] The water-based two-component wood coating is prepared from two parts, the main agent and the curing agent, and the mass ratio of the main agent to the curing agent is 1:1.8.

[0029] By mass percentage, the main agent includes the following components: 70% acrylic emulsion, 14% water-based polyurethane dispersion, 1.7% film-forming aid, 0.2% wetting agent, 0.1% leveling agent, 0.5% defoamer, 0.5% wax, 0.2% preservative, 1% benzophenone, 1.8% aromatic β-diketone and 10% water; wherein the UV absorber is a mixture of benzophenone: aromatic β-diketone, the mass ratio of which is 1:1.8.

[0030] By mass percentage, the curing agent includes the following components: 20% propylene glycol diacetate and 80% cyanate mixture; the cyanate mixture is a mixture of water-based isocyanate and hydrogenated xylylene diisocyanate, which The mass ratio is 2.5:1.

[0031] Prepare as follows:

[0032] (1) Preparation of main ingredient: Stir acrylic emulsion and water-based polyurethan...

Embodiment 3

[0036] The water-based two-component wood coating is prepared from two parts, the main agent and the curing agent, and the mass ratio of the main agent to the curing agent is 1:1.6.

[0037] According to the following mass percentage composition: the main agent includes the following components: 60% acrylic emulsion, 20% water-based polyurethane dispersion, 2.5% film-forming aid, 0.5% wetting agent, 0.5% leveling agent, 1% Antifoaming agent, 1% wax, 0.4% preservative, 2.1% UV absorber and 12% water; wherein the UV absorber is a mixture of benzophenone:aromatic β-diketone, and its mass ratio is 1:1.8.

[0038] By mass percentage, the curing agent includes the following components: 30% propylene glycol diacetate and 70% cyanate mixture; the cyanate mixture is a mixture of water-based isocyanate and hydrogenated xylylene diisocyanate, which The mass ratio is 2:1.

[0039] Prepare as follows:

[0040] (1) Preparation of main ingredient: Stir acrylic emulsion and water-based poly...

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Abstract

The invention discloses a waterborne double-component wood coating. The water-based double-component wood coating is prepared from two parts including a main agent and a curing agent. The main agent comprises an acrylic emulsion, a waterborne polyurethane dispersion, a coalescing agent, a wetting agent, a leveling agent, an antifoaming agent, wax, a preservative, an ultraviolet absorbent and water. The curing agent comprises components in percentage by mass as follows: propylene glycol diacetate and a cyanate ester mixture; the cyanate ester mixture is a mixture of waterborne isocyanate and hydrogenated xylylene diisocyanate; the mass ratio of the main agent to the curing agent is 1:(1.5-1.8). The double-component wood coating takes acrylic acid and waterborne polyurethane dispersion as main film forming matters, isocyanate is used as the curing agent, a curing reaction is conducted at the normal temperature, the coating has the advantages of high hardness, good scratch resistance, ultraviolet resistance, yellowing resistance and the like, is simple to produce, economical and reasonable and can be widely applied to products such as wooden furniture.

Description

technical field [0001] The invention relates to the technical field of water-based wood coatings, in particular to a water-based two-component wood coating and a preparation method thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection and the country's restrictions on volatile organic compounds (VOC), water-based wood coatings have developed rapidly due to the advantages of low VOC content, non-toxic and harmless, non-flammable, non-explosive, and no fire hazard. One-component water-based wood coatings have the advantages of high market acceptance and low price, but there are certain requirements for construction temperature and humidity, and the drying speed of the paint film is slow, and the degree of crosslinking is not high enough to form a paint film that is not dense enough. The quality of film formation is not guaranteed, so the film hardness, scratch resistance and chemical resistance of one-component water-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/04C09D7/63
CPCC08L2201/08C08L2201/10C08L2205/03C09D7/63C09D133/00C08L75/04C08L91/06C08K5/103C08K5/29C08K5/07
Inventor 施佳弟
Owner 嘉善蓝欣涂料有限公司
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