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High-adhesion waterborne polyurethane finishing paint

A water-based polyurethane, high-adhesion technology, applied in the coating and other directions, to achieve the effect of less compound reaction, less organic solvent and simple preparation method

Inactive Publication Date: 2019-05-10
镇江禹亨新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the water-based polyurethane coatings in the existing market solve the volatilization hazards caused by traditional solvent-based paints, their adhesion performance still needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of the waterborne polyurethane finish paint of high adhesion, it is characterized in that, preparation steps are as follows:

[0027] (1) To prepare component A, put water-based acrylic resin, saturated polyester resin, pigment, xylene, and butyl acetate into the paint mixing reaction kettle in sequence, stir for 1 hour, and stir at a speed of 550r / min, and then obtain A after stirring evenly components;

[0028] (2) To prepare component B, put tetraethyl orthosilicate and deionized water into the paint let-down reaction kettle in turn, stir for 20 minutes, and stir at a rate of 650r / min, and get component B after stirring evenly;

[0029] (3) Put A component and B component into the paint mixing reaction kettle in sequence, the stirring weight ratio is 4:1, the stirring time is 1H, the stirring speed is 750r / min, and the finished product is obtained after stirring evenly.

[0030] The components of component A include in parts by weight: ...

Embodiment 2

[0040] A kind of preparation method of the waterborne polyurethane finish paint of high adhesion, it is characterized in that, preparation steps are as follows:

[0041] (4) To prepare component A, put water-based acrylic resin, saturated polyester resin, pigment, xylene, and butyl acetate into the paint mixing reaction kettle in turn, stir for 2 hours, and stir at a speed of 600r / min, and then get A after stirring evenly components;

[0042] (5) To prepare component B, put tetraethyl orthosilicate and deionized water into the paint let-down reaction kettle in turn, stir for 40 minutes, and stir at a rate of 800r / min, and get component B after stirring evenly;

[0043] (6) Put A component and B component into the paint mixing reaction kettle in turn, the stirring weight ratio is 4:1, the stirring time is 3H, the stirring speed is 900r / min, and the finished product is obtained after stirring evenly.

[0044] The components of component A include in parts by weight:

[0045] 2...

Embodiment 3

[0054] A kind of preparation method of the waterborne polyurethane finish paint of high adhesion, it is characterized in that, preparation steps are as follows:

[0055] (7) To prepare component A, put water-based acrylic resin, saturated polyester resin, pigment, xylene, and butyl acetate into the paint mixing reaction kettle in sequence, stir for 1.5 hours, and stir at a speed of 580r / min. After stirring evenly, you can get A component;

[0056] (8) To prepare component B, put tetraethyl orthosilicate and deionized water into the paint let-down reactor in sequence, stir for 30 minutes, and stir at a rate of 700 r / min, and get component B after stirring evenly;

[0057] (9) Put A component and B component into the paint mixing reaction kettle in turn, the stirring weight ratio is 4:1, the stirring time is 2H, the stirring speed is 800r / min, and the finished product is obtained after stirring evenly.

[0058] The components of component A include in parts by weight:

[0059]...

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Abstract

The invention provides high-adhesion waterborne polyurethane finishing paint which is characterized by comprising a component A and a component B, and the weight ratio of the component A to the component B is 4:1. The component A comprises, by weight, 15-25 parts of waterborne acrylic resin, 12-25 parts of saturated polyester resin, 4-20 parts of pigments, 3-20 parts of styrene and 14-25 parts ofbutyl acetate. The component B comprises, by weight, 5-15 parts of ethyl orthosilicate and 30-45 parts of water. According to a novel formula, the waterborne acrylic resin and the polyester resin serve as a formula of a composite primer, a paint film has high hardness and fullness, high ultraviolet ray resistance and good acid resistance and alkali resistance, and the adhesion among the finishingpaint and various primers is good. Water serves as a diluting agent, organic solvents are less, and the finishing paint is green, environmentally friendly, less in VOC (volatile organic compound) emission and better in use effect.

Description

technical field [0001] The invention relates to a coating, in particular to a water-based polyurethane topcoat with high adhesion. Background technique [0002] Due to its excellent performance, polyurethane coatings have been widely used in wood coatings, architectural coatings, automotive coatings, etc. Although solvent-based polyurethane coatings have excellent performance, they contain a large amount of volatile organic compounds (VOC), which are flammable and cause great pollution to the environment and human body. Water-based polyurethane coatings combine the advantages of high hardness, abrasion resistance, and chemical resistance of polyurethane coatings with the low VOC content of water-based coatings, and have been widely used in the coatings industry. [0003] In the prior art, water-based paints use water as a diluent and do not contain organic solvents. They do not contain benzene, toluene, xylene, formaldehyde, and free TDI toxic heavy metals. They are non-tox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D4/00C09D7/63C09D7/20
Inventor 马玉鹏吕壮志张文俊
Owner 镇江禹亨新材料有限公司
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