High-performance bi-component waterborne polyurethane woodenware finishing paint and preparation method therefor

A water-based polyurethane, two-component technology, applied in the field of coatings, to achieve low voc, excellent adhesion, and excellent film-forming effects

Inactive Publication Date: 2016-06-08
TIANJIN MEIGUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These, domestic water-based paint companies are still difficult to do

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Put a specified amount of 50 parts by weight of water-based hydroxyl polymer dispersion in the paint kettle or pull tank, start the mixer, and slowly stir the emulsion at a speed not exceeding 300r / min.

[0018] 2. Slowly add the excess water after deducting the water required for pre-configured additives from the formula into the mixing container. The water required in production must be deionized water or distilled water, and unpurified tap water, well water, and river water are not allowed. Water and additives must be added dropwise or in a trickle, and a large amount of violent one-time addition is not allowed to avoid stratification and agglomeration. Stir for about 5-10 minutes after adding.

[0019] 3. Add the film-forming aid directly into the mixer, increase the speed to 500~800r / min after adding, and stir for 10~20min. Film-forming aids can be added alone or pre-mixed with 0.6 parts by weight of carboxymethyl cellulose, 2 parts by weight of calcium chlori...

Embodiment 2

[0025] 1. Put a specified amount of 65 parts by weight of water-based hydroxyl polymer dispersion in the paint kettle or pull tank, start the mixer, and slowly stir the emulsion at a speed not exceeding 300r / min.

[0026] 2. Slowly add the excess water after deducting the water required for pre-configured additives from the formula into the mixing container. Add water and additives by dripping or trickling, and do not add a large amount of violent one-time addition to avoid stratification and agglomeration. Stir for about 10 minutes after the addition.

[0027] 3. Add the film-forming aid directly into the mixer, increase the speed to 800r / min after adding, and stir for 10~20min. Film-forming aids can be added alone or pre-mixed with 1 weight part of carboxymethyl cellulose, 2.5 weight parts of calcium chloride, 1.5 weight parts of sodium benzoate, 4.5 weight parts of distilled water, 7 weight parts of matting pulp, 0.4 Parts by weight of defoamer, 1.5 parts by weight of lev...

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PUM

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Abstract

The invention provides high-performance bi-component waterborne polyurethane woodenware finishing paint and a preparation method therefor. The high-performance bi-component waterborne polyurethane woodenware finishing paint is prepared from a dispersion component A and a curing agent component B; the dispersion component A contains the ingredients in parts by weight: 50-65 parts of silicon modified aqueous hydroxyl polymer dispersion, 0.4-1 part of carboxymethyl cellulose, 1.8-2.5 parts of calcium chloride, 1-1.5 parts of sodium benzoate, 10-15.5 parts of distilled water, 5-8 parts of delustering slurry, 0.3-0.5 part of antifoaming agent, 0.2-0.5 part of leveling agent, 0.3-0.4 part of dispersing agent, 0.2-0.3 part of thickening agent and 0.1-0.3 part of drier; and the curing agent component B is a hydrophilicity modified novel aqueous isocyanate polymer or prepolymer. The high-performance bi-component waterborne polyurethane woodenware finishing paint and the preparation method therefor have the beneficial effects that the high-performance bi-component waterborne polyurethane woodenware finishing paint has the characteristics of safety, environment-friendliness, good physical properties and the like, particularly, the hardness can reach H-2H, the ever-present problem of aqueous woodenware paint that the hardness does not meet requirements is solved, and problems in transportation caused by low temperature are also solved.

Description

technical field [0001] The invention belongs to the coating field, and especially designs a high-performance two-component waterborne polyurethane wood topcoat and a preparation method thereof. Background technique [0002] Over the years, water-based paint has been popular in foreign markets for its environmental protection, energy saving, strong adhesion, rich colors, and simple construction. However, in China, due to various obstacles, water-based paint has not been able to obtain the recognition and market status it deserves from consumers. Therefore, if water-based paints want to gain recognition and achieve normal development, they must break through various obstacles. Obstacle 1: The product itself is immature At present, 80% of the water-based paint market in my country is based on acrylic acid. A notable feature of acrylic acid is that its molecules are in a network structure and are only distributed in the lateral direction. This feature is precisely the main sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
Inventor 郭素芳王雪平
Owner TIANJIN MEIGUAN TECH
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