A kind of low-temperature fast-drying type acrylic polyurethane 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, and achieve the effects of shortened surface drying and hard drying time, excellent physical and chemical properties, and fast drying and curing speed

Active Publication Date: 2017-10-03
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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  • A kind of low-temperature fast-drying type acrylic polyurethane coating and preparation method thereof
  • A kind of low-temperature fast-drying type acrylic polyurethane coating and preparation method thereof
  • A kind of low-temperature fast-drying type acrylic polyurethane 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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Abstract

The invention discloses a low-temperature quick-drying type acrylic polyurethane coating, which consists of A component and B component A:B=100:(20-27) according to the mass ratio; the composition and mass percentage of the A component The content is: 20-45% of hydroxyl acrylic resin, 4-7% of amino resin, 2-12% of modified polyaspartate, 4-10% of pigment, 8-20% of filler, 0.1-2% of dispersant, 0.1-2% defoamer, 0.1-2% leveling agent, 0.1-2% silane coupling agent, 0.1-2% pH regulator, 15-25% mixed solvent; the B component is isophorone diisocyanate. The coating film of the present invention has the characteristics of fast, low-temperature curing, and excellent physical and chemical properties, and has excellent adhesion to various substrates (iron, aluminum alloy, galvanized sheet, stainless steel, etc.), and can be widely used in high-end furniture , Industrial coatings such as steel structures and railway locomotives. The invention also discloses a preparation method of a low-temperature quick-drying acrylic polyurethane paint.

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 Patents(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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