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Preparation method of waterborne polyurethane coating with high adhesive force and long available time

A water-based polyurethane, high-adhesion technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of general coating performance, poor alcohol and alkali resistance, short usable time, etc., to achieve a wide range of market value and Application prospect, good solvent resistance, high hiding power

Inactive Publication Date: 2021-02-09
深圳市方润环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a method for preparing water-based polyurethane coatings with high adhesion and longer usable time, which solves the problem of general performance of such coatings and relatively low chemical properties (such as poor alcohol and alkali resistance) ), poor adhesion, short usable time, low hardness, wear resistance and other physical indicators, which cannot meet the market application problems well

Method used

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  • Preparation method of waterborne polyurethane coating with high adhesive force and long available time
  • Preparation method of waterborne polyurethane coating with high adhesive force and long available time
  • Preparation method of waterborne polyurethane coating with high adhesive force and long available time

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Embodiment 1

[0024] Embodiments of the present invention provide a kind of water-based polyurethane coating with high adhesion and longer usable time, comprising the following specific components:

[0025]

[0026] Composition The water-based polyurethane coating is prepared according to the following mass percentages: 18% water-based polyurethane resin, 17% water-based polyurethane resin, 15.5% toughness functional additive, 1% leveling agent, 0.8% thickener, 7% deionized water, defoaming 0.2% agent, 0.3% dispersant, 1.9% matte powder, 38% water-based polyurethane resin and 0.3% pH regulator.

[0027] A kind of preparation method of water-based polyurethane paint with high adhesion and longer usable time, comprises the following specific steps:

[0028] S1. Stir 18% of the water-based polyurethane resin and 17% of the water-based polyurethane resin in the dispersion tank, and then add 15.5% of the toughness functional additive while stirring;

[0029] S2. Continue to stir, add 1% leve...

Embodiment 2

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the present embodiment will be further described in detail in conjunction with specific embodiments based on Embodiment 1. It should be understood that the specific embodiments described here are only It is used to explain the present invention, not to limit the present invention.

[0036] Composition water-based polyurethane coating mass percentage composition and its preparation method are as follows:

[0037]

[0038]

[0039] The preparation method of waterborne polyurethane coating is as follows:

[0040] Put 1 and 2 in the dispersing cylinder (stirring speed 700-800r / min), then add 3 while stirring, and then add the mixture of 4 and 5 while stirring, clean the barrel of the mixture with 6, and add while stirring 6. Add 7 after stirring continuously for 5 minutes, add 8 and 9 while stirring, adjust the stirring speed to 900-1000r / min, add 10 and 11 after continu...

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Abstract

The invention provides a preparation method of a waterborne polyurethane coating with high adhesive force and long available time, and relates to the technical field of waterborne polyurethane coatings. According to the preparation method of the waterborne polyurethane coating with high adhesion and relatively long available time, and the coating comprises the following specific components: 17-18%of waterborne polyurethane resin; 17-18% of waterborne polyurethane resin; 15-16% of a toughness functional aid; 0.8-1% of a leveling agent; 0.7-0.8% of a thickening agent; 6-7% of deionized water; 0.1-0.3% of a defoaming agent; 0.2-0.5% of a dispersing agent; 1.8-2% of matt powder; 37-39% of a waterborne polyurethane resin; and 0.2-0.3% of a pH regulator. By combining the three polyurethane resins, the crosslinking degree of the water-based paint is improved, the adhesive film is improved, and the water-based paint has the advantages of excellent comprehensive properties, higher adhesive force, longer usable time, excellent film-forming effect, higher hardness, favorable water resistance, favorable chemical stability, safety in use and environment friendliness, and conforms to the marketdemands; the method has wide market value and application prospect, and plays a very important role in promoting the development of the water-based paint industry.

Description

technical field [0001] The invention relates to the technical field of water-based polyurethane coatings, in particular to a preparation method of water-based polyurethane coatings with high adhesion and long service life. Background technique [0002] Water-based industrial coatings are prepared from water-based resins, pigments, various additives, and deionized water. They are non-polluting to the environment and harmless to humans. They are environmentally friendly coatings, use water as the dispersion medium, and are non-flammable and non-polluting. Does not contain toluene, xylene and other benzene series, the VOC content is lower than the national mandatory standard, no irritating smell, non-toxic and harmless; it dries quickly at room temperature, and the paint film has strong adhesion. It is compatible with various water-based topcoats and thinner-type topcoats Good matching; excellent anti-rust and anti-corrosion properties; construction tools can be washed with tap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04
CPCC09D175/04C08L2205/025C08L2205/03C08L75/04
Inventor 霍朝晖张刚史彦龙林金辉
Owner 深圳市方润环境科技有限公司
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