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Waterborne polyurethane coating with high surface hardness

A water-based polyurethane, high surface technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of inconspicuous effect, reduce the adhesion of coating film, etc., achieve the effect of reducing VOC, increasing the absorption of small molecules, reducing the easy Gathering effect

Inactive Publication Date: 2019-03-08
肥西县创玺建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the existing polyurethane coatings can enhance the surface hardness by adding a certain amount of inorganic fillers, the effect is not obvious, and the adhesion of the coating film will also be reduced due to the increase of inorganic fillers.

Method used

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  • Waterborne polyurethane coating with high surface hardness
  • Waterborne polyurethane coating with high surface hardness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A water-based polyurethane coating with high surface hardness, the water-based polyurethane coating with high surface hardness contains 15% of its mass of submicron medical stone powder loaded with active ingredients.

[0021] Further, the preparation method of the submicron medical stone powder loaded with active ingredients is as follows:

[0022] (1) Crush the medical stone to make medical stone powder with a particle size of 10 μm, mix the medical stone powder with a diisopropanolamine solution 6 times its mass, stir at 75°C for 70 minutes, and then filter, using deionized Wash with water and dry to constant weight;

[0023] (2) Evenly mix the medical stone powder obtained above with the active ingredient in a mass ratio of 120:30, heat to 112°C under the protection of an inert gas, grind at a speed of 800r / min for 5 hours, and then cool naturally to room temperature, Stand still for 20 minutes, then cool to 0°C, continue to grind for 20 minutes, and naturally retu...

Embodiment 2

[0032] A water-based polyurethane coating with high surface hardness, which contains 18% of its mass of submicron medical stone powder loaded with active ingredients.

[0033] Further, the preparation method of the submicron medical stone powder loaded with active ingredients is as follows:

[0034] (1) Crush the medical stone to make medical stone powder with a particle size of 10 μm, mix the medical stone powder with a diisopropanolamine solution 6 times its mass, stir at 75°C for 70 minutes, and then filter, using deionized Wash with water and dry to constant weight;

[0035] (2) Evenly mix the medical stone powder obtained above with the active ingredient in a mass ratio of 120:36, heat to 116°C under the protection of an inert gas, grind at a speed of 800r / min for 6 hours, and then naturally cool to room temperature, Stand still for 20 minutes, then cool to 0°C, continue to grind for 20 minutes, and naturally return to room temperature to obtain medical stone powder load...

Embodiment 3

[0044] A water-based polyurethane coating with high surface hardness, which contains 16% of its mass of submicron medical stone powder loaded with active ingredients.

[0045] Further, the preparation method of the submicron medical stone powder loaded with active ingredients is as follows:

[0046] (1) Crush the medical stone to make medical stone powder with a particle size of 10 μm, mix the medical stone powder with a diisopropanolamine solution 6 times its mass, stir at 75°C for 70 minutes, and then filter, using deionized Wash with water and dry to constant weight;

[0047] (2) Evenly mix the medical stone powder obtained above with the active ingredient in a mass ratio of 120:30-36, heat to 115°C under the protection of an inert gas, grind at a speed of 800r / min for 5.6 hours, and then naturally cool to room temperature After that, let stand for 20 minutes, then cool to 0°C, continue to grind for 20 minutes, and return to room temperature naturally to obtain medical sto...

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Abstract

The invention discloses a waterborne polyurethane coating with high surface hardness, and relates to the technical field of waterborne coatings. The waterborne polyurethane coating with the high surface hardness contains sub-micro medical stone powder loaded with active ingredients, and the mass of the sub-micro medicine stone powder accounts for 15-18% of the waterborne polyurethane coating. By addition of the sub-micro medicine stone powder loaded with the active ingredients and through the penetration of the active ingredients loaded in the sub-micro medical stone powder in the coating, a certain crosslinking effect on polymer can be achieved, and the shortcoming that the strength of a traditional waterborne polyurethane coated film is not high is overcome.

Description

technical field [0001] The invention belongs to the technical field of water-based paint, in particular to a water-based polyurethane paint with high surface hardness. Background technique [0002] Water-based polyurethane (also known as water-based polyurethane) is a polyurethane resin containing hydrophilic groups in the molecular chain of polyurethane, which has a strong affinity with water. It can be dispersed in water and formed by using a specific process. stable system. Waterborne polyurethane is mainly used in leather finishing, textile printing and dyeing, paper making, architectural coatings, adhesives and cast steel coatings. [0003] Polyurethane coatings, that is, urethane coatings, contain a considerable number of polyurethane bonds in their coating molecules. In addition to urethane bonds, polyurethane coatings also contain urea bonds, ether bonds, ester bonds, and allophanate bonds. It is a coating with excellent performance and wide application. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/62
CPCC09D175/04C08K2201/003C09D7/62C09D7/69C08K9/12C08K3/32C08K5/21C08K5/053
Inventor 郭平
Owner 肥西县创玺建材科技有限公司
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