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Single-component waterborne finishing coat and preparation method thereof

A single-component, water-based technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor flexibility and insufficient elasticity, and achieve the effect of high flexibility

Active Publication Date: 2014-03-12
GUANGDONG BADESE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the present invention, a single-component water-based elastic topcoat is invented by using the water-based resin with excellent flexibility and elastic properties and system additives to solve the technical problems of poor flexibility and insufficient elasticity

Method used

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  • Single-component waterborne finishing coat and preparation method thereof
  • Single-component waterborne finishing coat and preparation method thereof
  • Single-component waterborne finishing coat and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] .

[0029] The preparation steps of described a kind of one-component waterborne elastic finish paint are as follows:

[0030] (1) Add 50 kg of water-based acrylic resin and 35 kg of water-based polyurethane resin in sequence into container A that meets the requirements.

[0031] (2) Start stirring, disperse at a low speed of 400~600 r / min, add 0.4 kg of wetting agent Tego270, 0.1 kg of defoamer Tego902W, 0.2 kg of BYK028, and disperse at a high speed of 1000~1400 r / min for 10~15 min.

[0032] (3) Add 1.8 kg of co-solvent DPM, 5.5 kg of DPnB and 5 kg of water into a clean container B that meets the requirements, and disperse at a low speed for 5 minutes to form a uniformly dispersed mixed solution. Stop stirring and add the mixed solution to container A .

[0033] (4) Add thickener PUR42 0.4 kg, water 1 kg to adjust the viscosity to 65-70ku / 25 o C, stirring at high speed for 5 min.

[0034] (5) Add 0.3 kg of preservative and 0.3 kg of antifungal agent in turn, an...

Embodiment 2

[0037] .

[0038] The preparation steps of described a kind of one-component waterborne elastic finish paint are as follows:

[0039] (1) Add 60 kg of water-based acrylic resin and 25 kg of water-based polyurethane resin in sequence into container A that meets the requirements.

[0040] (2) Start stirring, disperse at a low speed of 400~600 r / min, add 0.2 kg of wetting agent Tego270, and 0.5 kg of defoamer BYK028 in sequence, and disperse at a high speed of 1000~1400 r / min for 10~15 min.

[0041] (3) Add 7 kg of co-solvent DPnB and 5.5 kg of water into a clean container B that meets the requirements, and disperse at a low speed for 5 minutes to form a uniformly dispersed mixed solution. Stop stirring, and add the mixed solution to container A.

[0042] (4) Add thickener PUR42 0.6 kg, water 1 kg to adjust the viscosity to 65-70ku / 25 o C, stirring at high speed for 5 min.

[0043] (5) Add 0.1 kg of preservative and 0.1 kg of antifungal agent in sequence, and disperse evenly...

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Abstract

The invention provides single-component waterborne finishing coat and a preparation method thereof. According to coating performance requirements of existing soft wood and rattan wood products, technical problems that a coating material is poor in flexibility, poor in elasticity and easy to crack are solved by utilizing performances of waterborne acrylic resin and waterborne polyurethane resin, and adjusting a use ratio, so that technical requirements of a client for coating the soft material are satisfied. The single-component waterborne finishing coat comprises the following main components in percentage by weight: 50%-60% of waterborne acrylic resin, 25%-35% of waterborne polyurethane resin, 0.2%-0.5% of a wetting agent, 0.3%-0.5% of a defoaming agent, 6%-8% of a cosolvent, 0.4%-0.6% of a thickener, 0.1%-0.3% of a preservative, 0.1%-0.3% of a mildew preventive and 6%-8% of water.

Description

technical field [0001] The invention relates to a one-component water-based elastic topcoat and a preparation method thereof, belonging to the field of water-based wood coatings. Background technique [0002] Soft wood, such as rattan wood products, pine wood, etc., due to its function and use, the coating products used are required to be environmentally friendly, high in flexibility, excellent in elasticity and wear-resistant. [0003] Water-based wood coatings are one of the most environmentally friendly products. However, currently commonly used water-based wood coatings have poor flexibility and insufficient elasticity, which can easily cause cracking and cannot meet the requirements of soft wood products. [0004] In water-based wood coatings, the flexibility and elasticity of the product mainly depend on the performance of the water-based resin and the corresponding additives. By using the blending of resin and additives, it is necessary to take into account the wear r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/04C09D7/12
Inventor 方学平饶小胜
Owner GUANGDONG BADESE CHEM
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