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Water-based plant-based quick-drying polyurethane finish paint and preparation method thereof

A polyurethane topcoat, plant-based technology, used in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of poor chemical resistance and scratch resistance, high VOC content in two-component coatings, and improve drying. speed, reduced VOC content, improved chemical resistance

Inactive Publication Date: 2021-06-15
山东七维新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of high VOC content, poor chemical resistance and scratch resistance of the two-component coatings in the prior art, the present invention provides a water-based plant-based quick-drying polyurethane topcoat and a preparation method thereof to solve the above problems

Method used

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  • Water-based plant-based quick-drying polyurethane finish paint and preparation method thereof
  • Water-based plant-based quick-drying polyurethane finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A water-based plant-based quick-drying polyurethane topcoat, comprising the following components in parts by weight:

[0044] Component A: 60 parts of water-based hydroxyl acrylic emulsion, 1 part of water-based UV absorber, 0.2 part of neutralizer, 0.2 part of defoamer, 0.8 part of dispersant, 12 parts of pigment, 0.6 part of leveling agent, substrate wetting agent 0.6 parts, 13.59 parts of deionized water, 1 part of thickener, 0.01 parts of catalyst;

[0045]Component B: 10 parts of aliphatic polyisocyanate, 2.5 parts of propylene glycol diacetate.

[0046] The preparation steps are as follows:

[0047] (1) Add 8.15 parts of deionized water, 0.1 part of neutralizer, 0.2 part of defoamer, 0.8 part of dispersant, and 12 parts of pigment into the stock preparation pot in turn, control the speed of 500-800r / min, stir for more than 20min, and stir evenly Finally, it is ground to obtain the early stage slurry, and the grinding fineness is ≤20 μm.

[0048] (2) Add 60 part...

Embodiment 2

[0053] A water-based plant-based quick-drying polyurethane topcoat, comprising the following components in parts by weight:

[0054] Component A: 65 parts of water-based hydroxyacrylic emulsion, 0.6 part of water-based UV absorber, 0.2 part of neutralizer, 0.2 part of defoamer, 0.8 part of dispersant, 12 parts of pigment, 0.5 part of leveling agent, substrate wetting agent 0.5 parts, 6.38 parts of deionized water, 0.8 parts of thickener, 0.02 parts of catalyst;

[0055] Component B: 13 parts of aliphatic polyisocyanate, 3.25 parts of propylene glycol diacetate.

[0056] The preparation steps are as follows:

[0057] (1) Add 3.83 parts of deionized water, 0.1 part of neutralizer, 0.2 part of defoamer, 0.8 part of dispersant, and 12 parts of pigment into the stock preparation pot in turn, control the speed of 500-800r / min, stir for more than 20min, and stir evenly Finally, it is ground to obtain the early stage slurry, and the grinding fineness is ≤20 μm.

[0058] (2) Add 65 ...

Embodiment 3

[0063] A water-based plant-based quick-drying polyurethane topcoat, comprising the following components in parts by weight:

[0064] Component A: 70 parts of water-based hydroxyl acrylic emulsion, 0.9 part of water-based UV absorber, 0.3 part of neutralizer, 0.2 part of defoamer, 0.8 part of dispersant, 12 parts of pigment, 0.5 part of leveling agent, substrate wetting agent 0.5 parts, 4.27 parts of deionized water, 0.5 parts of thickener, 0.03 parts of catalyst;

[0065] Component B: 10 parts of aliphatic polyisocyanate, 2.5 parts of propylene glycol diacetate.

[0066] The preparation steps are as follows:

[0067] (1) Add 2.56 parts of deionized water, 0.15 parts of neutralizer, 0.2 parts of defoamer, 0.8 parts of dispersant, and 12 parts of pigments into the stock preparation pot in turn, control the speed of 500-800r / min, stir for more than 20min, and stir evenly Finally, it is ground to obtain the early stage slurry, and the grinding fineness is ≤20 μm.

[0068] (2) A...

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Abstract

The invention relates to water-based plant-based quick-drying polyurethane finish paint and a preparation method thereof, and belongs to the technical field of water-based paint. The paint comprises a component A and a component B; and the dosage mass ratio of the component A to the component B is (8-10):1. The component A comprises the following components: a water-based hydroxyl acrylic emulsion, a water-based ultraviolet light absorber, a neutralizer, a defoaming agent, a dispersing agent, a pigment, a flatting agent, a base material wetting agent, deionized water, a thickening agent and a catalyst; and the component B comprises aliphatic polyisocyanate and propylene glycol diacetate. According to the water-based plant-based quick-drying polyurethane finish paint, the chemical resistance and scratch resistance of high-end furniture water-based polyurethane finish paint are greatly improved, the drying speed of a paint film is increased, meanwhile, the content of VOC in a formula is greatly reduced, and the water-based plant-based quick-drying polyurethane finish paint better meets the environment-friendly requirement compared with products in the existing market.

Description

technical field [0001] The invention belongs to the technical field of water-based coatings, and in particular relates to a water-based plant-based quick-drying polyurethane topcoat and a preparation method thereof. Background technique [0002] Traditional solvent-based two-component polyurethane coatings have excellent properties such as low film-forming temperature, strong adhesion, good wear resistance, high hardness, chemical resistance, and weather resistance, and are widely used as wood furniture coatings. However, with the continuous implementation and improvement of environmental protection policies and the continuous enhancement and improvement of consumers' awareness of environmental protection, traditional oil-based paints are gradually being replaced by environmentally-friendly paints. important parts of. Water-based paint is recognized by consumers for its characteristics of low VOC, energy saving, non-toxicity and environmental protection. However, due to the...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/08C08G18/73C08G18/62
CPCC09D175/04C09D5/08C08G18/73C08G18/6216
Inventor 庞博姜凤冕
Owner 山东七维新材料有限公司
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