Polyurethane glue and preparation method thereof

A technology of polyurethane glue and polyurethane dispersion, applied in polyurea/polyurethane adhesives, monocarboxylate copolymer adhesives, adhesives, etc., can solve poor heat resistance, poor adhesion, and easy peeling of glue and other problems, to achieve the effect of enhancing adhesion, enhancing quick-drying performance, and excellent environmental protection characteristics

Inactive Publication Date: 2020-04-17
江苏科趣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane glue has a simple process, can be cured at room temperature and heating, and its hardness can be adjusted in a wide range, but its heat resistance is not good, and the glue at the bonding joint is easy to fall off under high temperature conditions, and the adhesion is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: A polyurethane glue and its preparation method, prepared from the following raw materials in the weight ratio: 80 parts of polyurethane dispersion, 10 parts of melamine resin, 0.5 part of defoamer, 0.5 part of wetting and dispersing agent, pH 0.3 parts of value regulator, 0.2 parts of thickener, 0.5 parts of bactericide, 20 parts of co-solvent, 10 parts of epoxy resin, 10 parts of VAE emulsion, 0.1 part of preservative, 0.2 part of surfactant, appropriate amount of distilled water.

[0019] Further, the wetting and dispersing agent is polyacrylic acid sodium salt, the defoamer is fluorine-modified silicone defoamer, the thickener is associative polyurethane, and the leveling agent is silicone leveling agent .

[0020] Further, the preservative is isothiazolone.

[0021] Further, the defoamer is at least one of mineral oil defoamers, silicone defoamers, and polyether defoamers.

[0022] Further, the preparation method of described polyurethane glue comprises...

Embodiment 2

[0027] Embodiment 2: A polyurethane glue and its preparation method, prepared from the following raw materials in the weight ratio: 90 parts of polyurethane dispersion, 15 parts of melamine resin, 1 part of defoamer, 0.85 parts of wetting and dispersing agent, pH 0.5 parts of value regulator, 0.5 parts of thickener, 1 part of fungicide, 30 parts of co-solvent, 15 parts of epoxy resin, 15 parts of VAE emulsion, 0.45 parts of preservative, 0.4 part of surfactant, appropriate amount of distilled water.

[0028] Further, the wetting and dispersing agent is polyacrylic acid sodium salt, the defoamer is fluorine-modified silicone defoamer, the thickener is associative polyurethane, and the leveling agent is silicone leveling agent .

[0029] Further, the preservative is isothiazolone.

[0030] Further, the defoamer is at least one of mineral oil defoamers, silicone defoamers, and polyether defoamers.

[0031] Further, the preparation method of described polyurethane glue comprises...

Embodiment 3

[0036] Embodiment 3: A polyurethane glue and its preparation method, prepared from the following raw materials in weight ratio: 100 parts of polyurethane dispersion, 20 parts of melamine resin, 1.5 parts of defoamer, 1.2 parts of wetting and dispersing agent, pH 0.7 parts of value regulator, 0.8 parts of thickener, 1.5 parts of fungicide, 40 parts of co-solvent, 20 parts of epoxy resin, 20 parts of VAE emulsion, 0.8 part of preservative, 0.6 part of surfactant, appropriate amount of distilled water.

[0037] Further, the wetting and dispersing agent is polyacrylic acid sodium salt, the defoamer is fluorine-modified silicone defoamer, the thickener is associative polyurethane, and the leveling agent is silicone leveling agent .

[0038] Further, the preservative is isothiazolone.

[0039] Further, the defoamer is at least one of mineral oil defoamers, silicone defoamers, and polyether defoamers.

[0040] Further, the preparation method of described polyurethane glue comprises...

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PUM

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Abstract

The invention discloses a polyurethane glue and a preparation method thereof. The polyurethane glue is prepared from, by weight, 80-100 parts of a polyurethane dispersion, 10-20 parts of melamine resin, 0.5-1.5 parts of a defoaming agent, 0.5-1.2 parts of a wetting dispersant, 0.3-0.7 part of a pH value regulator, 0.2-0.8 part of a thickener, 0.5-1.5 parts of a bactericide, 20-40 parts of a cosolvent, 10-20 parts of epoxy resin, 10-20 parts of a VAE emulsion, 0.1-0.8 part of a preservative, 0.2-0.6 part of a surfactant and a proper amount of distilled water. The polyurethane dispersion and other proper additives are added into the VAE emulsion, so the binding power of the glue to a base material is remarkably enhanced, and the quick-drying performance of the glue is enhanced; and no otherorganic solvent is added, so the environment-friendly characteristic is excellent.

Description

technical field [0001] The invention relates to the field of glue preparation, in particular to a polyurethane glue and a preparation method thereof. Background technique [0002] Polyurethane adhesives have the advantages of adjustable hardness, low temperature resistance, good flexibility, and high bonding strength. They can bond metals, non-metals and other materials, and their uses are becoming more and more extensive. However, at present, the entire polyurethane adhesive industry is still dominated by solvent-based. With the strengthening of people's safety and environmental awareness, the research on waterborne polyurethane adhesives has developed rapidly. Water-based polyurethane adhesive refers to the adhesive formed by dissolving polyurethane in water or dispersing it in water. Compared with solvent type, it has no solvent, no pollution, good film-forming property, strong adhesion, and other polymers especially It is an emulsion polymer that is easy to blend and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J161/28C09J131/04C09J163/00C09J11/06C09J11/08
CPCC08L2201/08C08L2205/025C08L2205/035C08L2312/00C09J11/06C09J11/08C09J175/04C08L75/04C08L61/28C08L63/00C08L31/04C08K5/46
Inventor 陆健
Owner 江苏科趣新材料科技有限公司
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