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Aqueous polyurethane adhesive

A water-based polyurethane and adhesive technology, applied in non-polymer adhesive additives, adhesive additives, etc., can solve problems such as reducing the water resistance of adhesives

Inactive Publication Date: 2016-01-13
安徽大松树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in order to maintain the storage stability of water-based polyurethane adhesives, a hydrophilic chain extender must be used. Although this solves the storage stability, it reduces the water resistance of the adhesive, and it is difficult to meet the high standards that the contemporary society constantly puts forward for materials. , high requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A water-based polyurethane adhesive, the raw materials of which by weight include: 100 parts of modified polyurethane emulsion, 1 part of polyurethane thickener, 0.13 part of silicone leveling agent, high-efficiency silicone defoamer Tego901W 0.005 part, dipropylene glycol 0.02 parts of butyl ether, 10 parts of fumed white carbon black, 1 part of titanium dioxide, 1 part of water-based curing agent, 2640.4 parts of antioxidant, 61000.8 parts of emulsifier, 0.3 part of UV absorber, Wet5001 part of wetting agent, γ-ammonia 1 part of propylmethyldiethoxysilane, 0.3 part of polysiloxane polymer compound, 0.2 part of methylisothiazolinone, 0.2 part of N-octyl-4-isothiazolin-3-one;

[0023] Among them, the preparation method of the modified polyurethane emulsion is: 2 Add ethanol for uniform ultrasonic dispersion, add γ-aminopropylmethyldiethoxysilane, continue ultrasonic dispersion, pass in nitrogen, heat up to 85°C, keep stirring for 22 hours, filter, wash with water, dry, and ...

Embodiment 2

[0025] A water-based polyurethane adhesive, the raw materials of which by weight include: 80 parts of modified polyurethane emulsion, 3 parts of polyurethane thickener, 0.02 part of silicone leveling agent, 0.01 part of silicone high-efficiency defoamer Tego901W, dipropylene glycol 0.005 parts of butyl ether, 20 parts of fumed white carbon black, 0.05 parts of titanium dioxide, 5 parts of water-based curing agent, 2640.2 parts of antioxidant, 61001.2 parts of emulsifier, 0.2 part of UV absorber, 1.4 part of wetting agent Wet500, γ -0.7 parts of aminopropylmethyldiethoxysilane, 0.7 parts of polysiloxane polymer compound, 0.1 part of methylisothiazolinone, 0.3 part of N-octyl-4-isothiazolin-3-one;

[0026] Among them, the preparation method of the modified polyurethane emulsion is: 2 Add ethanol for uniform ultrasonic dispersion, add γ-aminopropylmethyldiethoxysilane, continue ultrasonic dispersion uniformly, pass in nitrogen, heat up to 75°C, keep stirring for 26h, filter, wash wit...

Embodiment 3

[0028] A water-based polyurethane adhesive, its raw materials in parts by weight include: 85 parts of modified polyurethane emulsion, 2.5 parts of polyurethane thickener, 0.05 parts of silicone leveling agent, high-efficiency silicone defoamer Tego901W 0.009 part, dipropylene glycol 0.01 parts of butyl ether, 18 parts of fumed white carbon black, 0.06 parts of titanium dioxide, 4 parts of water-based curing agent, 2640.25 parts of antioxidant, 61001.1 parts of emulsifier, 0.22 parts of UV absorber, 1.3 parts of wetting agent Wet500, γ -0.8 parts of aminopropylmethyldiethoxysilane, 0.6 parts of polysiloxane polymer compound, 0.13 parts of methylisothiazolinone, 0.28 parts of N-octyl-4-isothiazolin-3-one;

[0029] Among them, the preparation method of the modified polyurethane emulsion is: 2 Add ethanol for uniform ultrasonic dispersion, add γ-aminopropylmethyldiethoxysilane, continue ultrasonic dispersion, pass in nitrogen, heat up to 78°C, keep stirring for 25h, filter, wash with ...

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Abstract

The present invention discloses an aqueous polyurethane adhesive, wherein the raw materials comprise, by weight, 80-100 parts of a modified polyurethane emulsion, 1-3 parts of a polyurethane thickener, 0.02-0.13 part of an organosilicon leveling agent, 0.005-0.01 part of an organosilicon efficient anti-foaming agent Tego901W, 0.005-0.02 part of dipropylene glycol butyl ether, 10-20 parts of fumed silica, 0.05-1 part of titanium dioxide powder, 1-5 parts of an aqueous curing agent, 0.2-0.4 part of an antioxidant 264, 0.8-1.2 parts of an emulsifier 6100, 0.2-0.3 part of an ultraviolet absorber RMB, 1-1.4 parts of a wetting agent Wet500, 0.7-1 part of gamma-aminopropyl methyl diethoxy silane, 0.3-0.7 part of a polysiloxane polymer compound, 0.1-0.2 part of methylisothiazolinone, and 0.2-0.3 part of N-octyl-4-isothiazolin-3-one.

Description

Technical field [0001] The invention relates to the technical field of adhesives, in particular to an aqueous polyurethane adhesive. Background technique [0002] Solvent-based polyurethane adhesive refers to an adhesive formed by dissolving or dispersing polyurethane in an organic solvent. It has the advantages of good elasticity, low temperature resistance, and excellent abrasion resistance. However, solvent-based polyurethane adhesives contain toxic and hazardous substances such as benzene, toluene, and xylene, which not only pollute the environment, but also endanger human health. [0003] Waterborne polyurethane has the advantages of no pollution, excellent mechanical properties, safety and reliability, easy modification, and good biocompatibility. Solvent-based polyurethane resin has been gradually replaced by water-based polyurethane, and water-based polyurethane has become an important direction for the development of the polyurethane industry. [0004] At present, to maint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/06C09J11/04C08G18/75C08G18/66C08G18/42
Inventor 朱立芳
Owner 安徽大松树脂有限公司
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