Water-based two-component highlight white finish paint as well as preparation method and application method thereof

A two-component, white topcoat technology, applied in the field of coatings, can solve the problems of poor fullness, low gloss, and poor adhesion of the paint film, and achieve the effects of improving adhesion, accelerating drying speed, and facilitating storage

CN111961402AInactive Publication Date: 2020-11-20东莞大宝化工制品有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-11-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of coatings, in particular to a water-based two-component highlight white finish paint as well as a preparation method and an application method thereof. Hydroxyl acrylic acid dispersoid and polyester polyol secondary dispersoid are taken as main raw materials of the finish paint and react with a curing agent, so that the hardness, glossiness and fullness of a paint film coated on the surface of a plate can be improved; by adopting a low-speed stirring preparation method, the generation of bubbles in an emulsion system can be reduced, and the stability of the main paint coating is improved, so that the adhesive force of a coating film is improved; and the water-based two-component highlight white finish paint has the characteristic of low VOC emission, meets the environmental protection requirements and does not influence the health of human bodies.
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Description

technical field

[0001] The invention relates to the technical field of coatings, in particular to a water-based two-component high-gloss white finish paint and a preparation method and application method thereof. Background technique

[0002] Paint is coated on the surface of the object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated. It is mainly composed of resin, oil or emulsion, with or without adding pigments, fillers, and corresponding additives. A viscous liquid prepared from organic solvents or water. Traditional coatings are solvent-based coatings, which contain harmful and toxic solvents such as benzene, which are harmful to human health, and have the disadvantages of VOC emissions that pollute the environment. With the continuous improvement of people's awareness of environmental protection, low-pollution environment-friendly coatings have become the focus of attention.

[0003] At present, a variety of wat...

Examples

Embodiment 1

[0038] A water-based two-component high-gloss white finish paint, including a main paint and an isocyanate curing agent. The bridging ratio of the -OH group in the main paint and the -NCO group in the isocyanate curing agent is 1:1.3. Lacquer coating is made up of the raw material of following parts by weight:

[0039]

[0040]

[0041] The balance is water.

[0042] In this example, the addition of super-wetting dispersant and silicone modified defoamer can improve the compatibility of 75% water-based white pulp with secondary dispersion of polyester polyol and hydroxyacrylic acid dispersion, so that the coating The obtained paint film is smoother and has better hiding power.

[0043] In this embodiment, the hydroxyl value of the polyester polyol secondary dispersion is 4.3.

[0044] In this example, the hydroxyl value of the hydroxyacrylic dispersion was 3.7.

[0045] The preparation method of above-mentioned a kind of water-based two-component high-gloss white topc...

Embodiment 2

[0055]A water-based two-component high-gloss white finish paint, including a main paint and an isocyanate curing agent. The bridging ratio of the -OH group in the main paint and the -NCO group in the isocyanate curing agent is 1:1. Lacquer coating is made up of the raw material of following parts by weight:

[0056]

[0057] The balance is water.

[0058] In this example, the addition of super-wetting dispersant and silicone modified defoamer can improve the compatibility of 75% water-based white pulp with secondary dispersion of polyester polyol and hydroxyacrylic acid dispersion, so that the coating The obtained paint film is smoother and has better hiding power.

[0059] In this embodiment, the hydroxyl value of the polyester polyol secondary dispersion is 3.5.

[0060] In this example, the hydroxyl value of the hydroxyacrylic dispersion was 3.5.

[0061] The preparation method of above-mentioned a kind of water-based two-component high-gloss white topcoat comprises t...

Embodiment 3

[0071] A water-based two-component high-gloss white finish paint, including a main paint and an isocyanate curing agent. The bridging ratio of the -OH group in the main paint and the -NCO group in the isocyanate curing agent is 1:1.5. Lacquer coating is made up of the raw material of following parts by weight:

[0072]

[0073] The balance is water.

[0074] In this example, the addition of super-wetting dispersant and silicone modified defoamer can improve the compatibility of 75% water-based white pulp with secondary dispersion of polyester polyol and hydroxyacrylic acid dispersion, so that the coating The obtained paint film is smoother and has better hiding power.

[0075] In this embodiment, the hydroxyl value of the polyester polyol secondary dispersion is 5.0.

[0076] In this example, the hydroxyl value of the hydroxyacrylic dispersion was 4.0.

[0077] The preparation method of above-mentioned a kind of water-based two-component high-gloss white topcoat comprise...