Water-based two-component polyurethane matte coating as well as preparation method and application thereof

A water-based two-component, polyurethane technology, applied in the water-based two-component polyurethane matte coating and its preparation, self-extinction water-based two-component polyurethane matte coating and its preparation field, can solve the problems affecting the water resistance of the coating, etc. The effect of improving flexibility, reducing costs, and ensuring stability

Active Publication Date: 2021-07-09
DONGGUAN CTL NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of matting powder in this invention will affect the water resistance of the coating

Method used

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  • Water-based two-component polyurethane matte coating as well as preparation method and application thereof
  • Water-based two-component polyurethane matte coating as well as preparation method and application thereof
  • Water-based two-component polyurethane matte coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] In this embodiment, a water-based two-component polyurethane matte coating is provided, and the water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following parts by weight Components:

[0090]

[0091]

[0092] The raw materials of the B component include the following components in parts by weight:

[0093] Covestro 307 water-based curing agent 0.1 part.

[0094] Among them, the solid content of the hydroxyacrylate emulsion is 35%, the hydroxyl content is 2%, and the particle size of the rutile titanium dioxide is 500 mesh.

[0095] The raw materials for the preparation of the hydroxyacrylate emulsion include the following components in parts by weight:

[0096]

[0097] The preparation method of described hydroxyacrylate emulsion comprises the following steps:

[0098] (1) Preparation of pre-emulsion

[0099] Put 30 parts of deionized water and 0.5 pa...

Embodiment 2

[0111] In this embodiment, a water-based two-component polyurethane matte coating is provided, and the water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following parts by weight Components:

[0112]

[0113]

[0114] The raw materials of the B component include the following components in parts by weight:

[0115] Covestro 307 water-based curing agent 5 parts.

[0116] Among them, the solid content of the hydroxyacrylate emulsion is 55%, the hydroxyl content is 4%, and the particle size of the rutile titanium dioxide is 1000 mesh.

[0117] The raw materials for the preparation of the hydroxyacrylate emulsion include the following components in parts by weight:

[0118]

[0119] The preparation method of described hydroxyacrylate emulsion comprises the following steps:

[0120] (1) Preparation of pre-emulsion

[0121] Put 30 parts of deionized water and 0.5 part...

Embodiment 3

[0133] In this embodiment, a water-based two-component polyurethane matte coating is provided, and the water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following parts by weight Components:

[0134]

[0135]

[0136] The raw materials of the B component include the following components in parts by weight:

[0137] Covestro 307 water-based curing agent 0.5 parts.

[0138] Wherein, the solid content of the hydroxyacrylate emulsion is 55%, and the hydroxyl content is 3%.

[0139] The raw materials for the preparation of the hydroxyacrylate emulsion include the following components in parts by weight:

[0140]

[0141] The preparation method of described hydroxyacrylate emulsion comprises the following steps:

[0142] (1) Preparation of pre-emulsion

[0143] Put 30 parts of deionized water and 0.5 parts of emulsifier in a pre-emulsification bottle, stir evenly at...

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Abstract

The invention provides a water-based two-component polyurethane matte coating as well as a preparation method and application thereof. The water-based two-component polyurethane matte coating comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight: 60-90 parts of hydroxyl acrylate emulsion, 5-20 parts of deionized water, 0-30 parts of powder, 0.5-2.5 parts of a wetting dispersant, 0.2-2 parts of a thickening agent, 0.2-1 part of a defoaming agent, 0.5-1.5 parts of a preservative, and 0.2-2 parts of a coalescing agent; the component B is prepared from the following raw material in parts by weight: 0.1 to 5 parts of Covestro 307 water-based curing agent. The polyurethane matt coating disclosed by the invention can have a matt effect without additionally adding matting powder, the water resistance, permeability and stability of the coating can be greatly improved, and the polyurethane matt coating is suitable for the field of coatings.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a water-based two-component polyurethane matte paint and its preparation method and application, in particular to a self-dulling water-based two-component polyurethane matte paint and its preparation method and application. Background technique [0002] With the strengthening of people's awareness of environmental protection, national environmental protection laws and regulations have become more stringent on the emission of volatile organic compounds (VOC) in the coatings industry. Especially in the field of wood lacquer, various places have begun to implement the "oil to water" project. Waterborne two-component polyurethane coatings have bright application prospects as high-performance and green products. Water-based two-component polyurethane products (2K-WPU) are mainly composed of hydroxyacrylate resin and isocyanate curing agent, which can form a cross-linked network struct...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/61C08G18/62
CPCC09D175/04C09D7/61C08G18/6229C08K2003/2241C08K3/22
Inventor 徐四喜卢开平赵文爱陈任卢浩标张雅莲覃事玖
Owner DONGGUAN CTL NEW MATERIAL TECH
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