Two-component exterior wall coating and preparation method thereof

A two-component technology for exterior wall coatings, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of slow drying speed, poor paint film elasticity and wear resistance, and difficulty in thick coating. Fast speed, good aging resistance, fast hardness effect

Inactive Publication Date: 2020-01-10
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the water-based exterior wall paint is not easy to be thickly coated, and the drying speed is slow at room temperature, and the paint film has poor elasticity and abrasion resistance, the present invention provides a two-component exterior wall paint and a preparation method thereof

Method used

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  • Two-component exterior wall coating and preparation method thereof
  • Two-component exterior wall coating and preparation method thereof
  • Two-component exterior wall coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0048] The embodiment of the present invention provides a two-component exterior wall paint, including A component and B component, and the A component includes the following raw material components in mass percentage: low-hydroxyl acrylic dispersion 10%, modified polyurethane dispersion 20%, pH adjuster 0.2%, first environmental solvent 0.8%, dispersant 1.8%, anti-sedimentation agent 0.2%, wetting and leveling agent 0.8%, thickener 0.6%, defoamer 0.6%, titanium dioxide 20 %, heavy calcium 30% and deionized water 15%;

[0049] The B component includes the following raw material components in mass percentage: 85% of water-based isocyanate curing agent and 15% of the second environmentally friendly solvent;

[0050] The mass ratio of the A component to the B component is 20:1.

[0051] Wherein, the low hydroxyl acrylic dispersion is XK110 of DSM; the modified polyurethane dispersion is Lacper 4221 and ACURE 2115 with a mass ratio of 2:1; the pH regulator is N,N-dimethylethanola...

Embodiment 2

[0058] The embodiment of the present invention provides a two-component exterior wall paint, including A component and B component, and the A component includes the following raw material components in mass percentage: low hydroxyl acrylic dispersion 12%, modified polyurethane dispersion 18%, pH regulator 0.2%, first environmental solvent 0.9%, dispersant 1.7%, anti-sedimentation agent 0.15%, wetting and leveling agent 0.9%, thickener 0.5%, defoamer 0.65%, titanium dioxide 14 %, heavy calcium 35% and deionized water 16%;

[0059] The B component includes the following raw material components in mass percentage: 90% of water-based isocyanate curing agent and 10% of the second environmental protection solvent;

[0060] The mass ratio of the A component to the B component is 22:1.

[0061] The grades of the above-mentioned components are the same as in Example 1, except that the modified polyurethane dispersion is Lacper 4221 and ACURE 2115 with a mass ratio of 4:1; the dispersa...

Embodiment 3

[0064] The embodiment of the present invention provides a two-component exterior wall paint, including A component and B component, and the A component includes the following raw material components in mass percentage: low hydroxyl acrylic dispersion 15%, modified polyurethane dispersion 15%, pH regulator 0.3%, first environmental solvent 1%, dispersant 1.5%, anti-sedimentation agent 0.1%, wetting and leveling agent 1%, thickener 0.4%, defoamer 0.7%, titanium dioxide 2 %, heavy calcium 45% and deionized water 18%;

[0065] The B component includes the following raw material components in mass percentage: 87% of water-based isocyanate curing agent and 13% of the second environmentally friendly solvent;

[0066] The mass ratio of the A component and the B component is 18:1.

[0067] The grades of the above-mentioned components are the same as in Example 1, except that the modified polyurethane dispersion is Lacper 4221 and ACURE 2115 with a mass ratio of 3:1; the dispersant is ...

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Abstract

The invention discloses a two-component exterior wall coating and a preparation method thereof. The two-component exterior wall coating comprises a component A and a component B, wherein the componentA comprises 10-15% of low hydroxyl acrylic acid dispersion, 15-20% of modified polyurethane dispersion, 0.2-0.3% of a pH regulator, 0.8-1% of a first environment-friendly solvent, 1.5-1.8% of a dispersant, 0.1-0.2% of an anti-settling agent, 0.8-1% of a wetting leveling agent, 0.4-0.6% of a thickening agent, 0.6-0.7% of a defoaming agent, 2-20% of titanium dioxide, 30-45% of heavy calcium and 15-18% of deionized water. The component B comprises 85-90% of a water-based isocyanate curing agent and 10-15% of a second environment-friendly solvent. The two-component exterior wall coating providedby the invention has the advantages of high hardness, good aging resistance, strong hydrophobicity, excellent acid resistance and alkali resistance, thick coating without blistering and prickly heat,and has wide market prospect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a two-component exterior wall coating and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards and the continuous development of society, people have paid more and more attention to the choice of architectural decorative coatings. It not only stays at the most basic protection of the substrate, but also puts forward higher requirements for the decorative effect of the coating. Exterior wall coatings not only require excellent water resistance and stain resistance, but also require fast drying of the paint film, no heat rash when applied thickly, and a hard and smooth paint film after drying. [0003] Water-based acrylic paint has the advantages of moderate cost, excellent weather resistance, good adjustability, and no organic solvent release. It is a type of paint product that has developed very rapidly i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D175/06C09D133/00C09D5/08C09D7/20C09D7/61C09D7/65
CPCC08L2201/08C08L2205/035C09D5/08C09D7/20C09D7/61C09D7/65C09D133/00C09D175/14C08L75/06C08L33/00C08L33/04C08L75/04C08L83/12C08K3/346C08L75/14
Inventor 宋利强周泽钱张戈辉许旭董立志胡中源
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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