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Low-temperature quick-drying type polyurethane acrylate coating and preparation method thereof

An acrylic polyurethane, quick-drying technology, applied in the field of coatings, can solve the problem that the coating film cannot be cured quickly, achieve excellent adhesion, good weather resistance, and improve the effect of mechanical strength

Active Publication Date: 2015-07-29
东莞市惠尔明高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-temperature quick-drying type acrylic polyurethane coating and its preparation method in order to overcome the defect that the coating film in the prior art cannot be cured rapidly in a coating environment with a temperature lower than 5°C

Method used

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  • Low-temperature quick-drying type polyurethane acrylate coating and preparation method thereof
  • Low-temperature quick-drying type polyurethane acrylate coating and preparation method thereof
  • Low-temperature quick-drying type polyurethane acrylate coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Group distribution ratio

[0027] 1. The composition composition and mass percentage content of component A are:

[0028]

[0029]

[0030] 2. Component B is: isophorone diisocyanate, according to the mass ratio A:B=100:20.

[0031] 2. Preparation method

[0032] 1. Add hydroxyacrylic resin and modified polyaspartic acid ester into the stirring tank, and add amino resin, 80% dispersant, and 80% defoamer in sequence while stirring at a stirring speed of 2000-3000r / min. 80% leveling agent, 80% silane coupling agent, 80% PH regulator and mixed solvent, stir and disperse for 8-15 minutes, reduce the stirring speed to 500r / min, add the pigment and filler and stir evenly, and then Grind with a sand mill to a fineness of 30 μm, filter and discharge to obtain component A;

[0033] 2. Add the aliphatic isocyanate and the remaining 20% ​​dispersant, 20% defoamer, 20% leveling agent, 20% silane coupling agent, and 20% PH regulator to the batching tank, at 2000-3000r / ...

Embodiment 2

[0038] 1. Group distribution ratio

[0039] 1. The composition composition and mass percentage content of component A are:

[0040]

[0041] 2. Component B is: isophorone diisocyanate, according to the mass ratio A:B=100:22.

[0042] Two, preparation method is identical with embodiment 1.

[0043] Three, the effect of this embodiment

[0044] The low-temperature quick-drying acrylic polyurethane coating prepared in this example can be tested at a low temperature of 3°C to 5°C, can reach surface dryness in 30 minutes, dry in 4 hours, and reach the best mechanical properties after 14 hours; Adhesion reaches grade 1; the appearance is smooth and smooth; the number of washes can reach 9700 times.

Embodiment 3

[0046] 1. Group distribution ratio

[0047] 1. The composition composition and mass percentage content of component A are:

[0048]

[0049] 2. Component B is: isophorone diisocyanate, according to the mass ratio A:B=100:27.

[0050] Two, preparation method is identical with embodiment 1.

[0051] Three, the effect of this embodiment

[0052] The low-temperature quick-drying acrylic polyurethane coating prepared in this example can be tested at a low temperature of 0°C to 5°C, can reach surface dryness in 25 minutes, dry in 3 hours, and reach the best mechanical properties after 13 hours; Adhesion reaches level 1; appearance is smooth and smooth; washing resistance reaches 9800 times.

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PUM

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Abstract

The invention discloses a low-temperature quick-drying type polyurethane acrylate coating. The coating consists of a component A and a component B by a mass ratio of 100 to (20-27), wherein the component A comprises the following components in percentage by mass: 20-45 percent of hydroxyl acrylic resin, 4-7 percent of amino resin, 2-12 percent of modified polyaspartic acid ester, 4-10 percent of a pigment, 8-20 percent of filler, 0.1-2 percent of a dispersant, 0.1-2 percent of a defoaming agent, 0.1-2 percent of a flatting agent, 0.1-2 percent of a silane coupling agent, 0.1-2 percent of a PH regulating agent and 15-25 percent of a mixed solvent; the component B is isophorone diisocyanate. The coating disclosed by the invention has the characteristics of being rapid, cured at low temperature, excellent in physical and mechanical properties and the like, is excellent in adhesive force to various base materials (iron, aluminum alloy, zinc plated plates, stainless steel and the like), and can be widely applicable to industrial coating of costly furniture, steel structures, railway locomotives and the like. The invention also discloses a preparation method of the low-temperature quick-drying type polyurethane acrylate coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a low-temperature quick-drying acrylic polyurethane coating and a preparation method thereof. Background technique [0002] Coatings have been widely used in various industries due to their decorative and protective functions. Although most of the coatings currently on the market have excellent performance, they have certain requirements for the coating ambient temperature. When the ambient temperature is lower than 5°C, it is very difficult to cross-link and cure the coating film. The surface drying time of most coatings is generally about It takes 12 hours, and the hard drying time is about 18 hours. Even if it exceeds 24 hours, it is difficult to reach 50% of the crosslinking degree of the dried paint film, and the paint film is prone to bubbles, easy to be polluted, and the adhesion is reduced. Affect the construction progress, construction quality and coating e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12C08G18/75C08G18/65C08G18/62C08G18/54C08G18/32
Inventor 高延敏姜文龙周建军
Owner 东莞市惠尔明高分子材料科技有限公司
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