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A kind of water-based two-component wood coating and preparation method thereof

A wood coating, two-component technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problem of compatibility without matte effect, and achieve good transparency, excellent chemical resistance, and good transparency

Active Publication Date: 2018-06-22
BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this wood coating has the disadvantages of nano-alumina paste and system compatibility, no matte effect, etc.

Method used

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  • A kind of water-based two-component wood coating and preparation method thereof
  • A kind of water-based two-component wood coating and preparation method thereof
  • A kind of water-based two-component wood coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a water-based two-component wood coating, which is prepared from raw materials including main agent A and curing agent B;

[0058] Wherein, the main agent A is prepared from the following raw materials in mass percentage:

[0059]

[0060] The curing agent B is prepared from the following raw materials in mass percentage:

[0061] Water-based isocyanate --- Bayer company Bayhdur XP 2655 70%,

[0062] Solvent --- Propylene Glycol Methyl Ether Acetate 30%;

[0063] The molar ratio of OH in the main agent A to NCO in the curing agent B is 1:1.4.

Embodiment 2

[0065] This embodiment provides a water-based two-component wood coating, which is prepared from raw materials including main agent A and curing agent B;

[0066] Wherein, the main agent A is prepared from the following raw materials in mass percentage:

[0067]

[0068] The curing agent B is prepared from the following raw materials in mass percentage:

[0069] Water-based isocyanate --- Bayer company Bayhdur XP 2655 80%,

[0070] Solvent --- Propylene glycol diacetate 20%;

[0071] The molar ratio of OH in the main agent A to NCO in the curing agent B is 1:1.2.

Embodiment 3

[0073] This embodiment provides a water-based two-component wood coating, which is prepared from raw materials including main agent A and curing agent B;

[0074] Wherein, the main agent A is prepared from the following raw materials in mass percentage:

[0075]

[0076]

[0077] The curing agent B is prepared from the following raw materials in mass percentage:

[0078] Water-based isocyanate --- Bayer company Bayhdur 305 65%,

[0079] Solvent --- Propylene Glycol Diacetate 35%;

[0080] The molar ratio of OH in the main agent A to NCO in the curing agent B is 1:1.5.

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Abstract

The invention discloses a waterborne two-component woodware coating and a preparation method thereof. The waterborne two-component woodware coating is prepared from main agent A and curing agent B. The main agent A comprises high-hydroxyl-value acrylic emulsion, low-hydroxyl-value acrylic emulsion, an aqueous polyurethane dispersion, a film forming auxiliary, a moistening agent, a leveling agent, an antifoaming agent, wax, extinction powder, a thickening agent, a preservative and deionized water, and the curing agent B comprises waterborne isocyanate and a solvent. The waterborne two-component woodware coating uses hydroxyl acrylic and the aqueous polyurethane dispersion as main film forming matters, the waterborne isocyanate serves as a cross-linking agent, the extinction powder and a wax auxiliary are added, curing reaction is performed at the normal temperature, and the coating has the advantages of high hardness, excellent chemical resistance, good scratch resistance, better transparence and simple, economical and reasonable production process, and can be widely applied to products such as wooden furniture and doors and windows.

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 restrictions on volatile organic compounds (VOC) in national environmental protection regulations, people's awareness of environmental protection and health has increased, and solvent-based coatings have been subject to more and more restrictions. Water-based wood coatings have low VOC content, non-toxic and harmless, non-flammable and non-toxic. Explosion, no fire hazard and other advantages and rapid development. One-component water-based wood coatings have the advantages of high market acceptance and low price. There is no chemical crosslinking in the film-forming process, resulting in low hardness of the coating film, general chemical resistance, poor scratch resistance, and poor anti-sticking properties. Difficult to meet some high-demand furni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/63C09D7/65
CPCC08L2201/10C08L2205/025C08L2205/035C09D175/04C08L75/04
Inventor 何金太路国忠吕懿训马占雄丁秀娟
Owner BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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