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Good water resistance aqueous polyurethane adhesive

A technology of water-based polyurethane and water resistance, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive additives, etc., can solve the problem of 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 with good water resistance, its raw materials include by weight: 50 parts of modified polyurethane emulsion, 1.8 parts of polyvinyl alcohol, 0.01 parts of BYK3333, 0.018 parts of water-based defoamer, 5.9 parts of kaolin powder, 0.57 parts of titanium dioxide powder 0.2 parts, water-based curing agent 0.2 parts, antioxidant 10100.3 parts, sodium dodecylbenzenesulfonate 0.5 parts, UV absorber 5310.2 parts, wetting agent Wet2650.6 parts, 3-aminopropyltriethoxysilane 0.7 parts, 0.2 parts of polysiloxane polymer compound;

[0023] Among them, the preparation method of the modified polyurethane emulsion is: nano-SiO 2 Add in ethanol, ultrasonically disperse evenly, add 3-aminopropyltriethoxysilane, continue to ultrasonically disperse evenly, pass nitrogen gas, heat up to 80°C, keep stirring for 24h, filter, wash with water, dry, and grind to obtain modified nano SiO 2 ; The modified nano-SiO 2 Adding ethanol to ultrasonic dispersion to ...

Embodiment 2

[0025] A water-based polyurethane adhesive with good water resistance, its raw materials include by weight: 60 parts of modified polyurethane emulsion, 0.06 parts of polyvinyl alcohol, 0.08 parts of BYK3333, 0.01 part of water-based defoamer, 12.9 parts of kaolin powder, 0.03 parts of titanium dioxide powder Parts, 3.9 parts of water-based curing agent, 10100.1 parts of antioxidant, 1 part of sodium dodecylbenzenesulfonate, 5310.1 parts of UV absorber, 2651 parts of wetting agent Wet, 0.3 parts of 3-aminopropyltriethoxysilane, polysilicon 0.4 part of oxane polymer compound;

[0026] Among them, the preparation method of the modified polyurethane emulsion is: nano-SiO 2 Add in ethanol, ultrasonically disperse evenly, add 3-aminopropyltriethoxysilane, continue to ultrasonically disperse evenly, pass nitrogen gas, heat up to 70°C, keep stirring for 30h, filter, wash with water, dry, and grind to obtain modified nano SiO 2 ; The modified nano-SiO 2 Adding ethanol to ultrasonic ...

Embodiment 3

[0028] A water-based polyurethane adhesive with good water resistance, its raw materials include by weight: 52 parts of modified polyurethane emulsion, 1.4 parts of polyvinyl alcohol, 0.03 parts of BYK3333, 0.016 parts of water-based defoamer, 7 parts of kaolin powder, 0.4 parts of titanium dioxide powder 1 part, water-based curing agent 1 part, antioxidant 10100.25 parts, sodium dodecylbenzenesulfonate 0.6 parts, UV absorber 5310.17 parts, wetting agent Wet2650.7 parts, 3-aminopropyltriethoxysilane 0.6 parts, 0.25 part of polysiloxane polymer compound;

[0029] Among them, the preparation method of the modified polyurethane emulsion is: nano-SiO 2 Add in ethanol, ultrasonically disperse evenly, add 3-aminopropyltriethoxysilane, continue ultrasonically disperse evenly, pass nitrogen gas, heat up to 78°C, keep stirring for 26h, filter, wash with water, dry, and grind to obtain modified nano SiO 2 ; The modified nano-SiO 2 Adding ethanol to ultrasonic dispersion to obtain mod...

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Abstract

The present invention discloses a good water resistance aqueous polyurethane adhesive, wherein the raw materials comprise, by weight, 50-60 parts of a modified polyurethane emulsion, 0.06-1.8 parts of polyvinyl alcohol, 0.01-0.08 part of BYK333, 0.01-0.018 part of an aqueous defoamer, 5.9-12.9 parts of kaolin powder, 0.03-0.57 part of titanium dioxide powder, 0.2-3.9 parts of an aqueous curing agent, 0.1-0.3 part of an antioxidant 1010, 0.5-1 part of sodium dodecyl benzene sulfonate, 0.1-0.2 part of an ultraviolet absorber 531, 0.6-1 part of a wetting agent Wet265, 0.3-0.7 part of 3-aminopropyl triethoxysilane, and 0.2-0.4 part of a polysiloxane macromolecule compound. The good water resistance aqueous polyurethane adhesive of the present invention has characteristics of good water resistance, high mechanical strength, and good adhesion.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a water-based polyurethane adhesive with good water resistance. Background technique [0002] Solvent-based polyurethane adhesive refers to an adhesive formed by dissolving or dispersing polyurethane in an organic solvent, which has the advantages of good elasticity, low temperature resistance, and excellent abrasion resistance. However, solvent-based polyurethane adhesives contain toxic and harmful 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 ...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/08C09J11/06C09J11/04C08G18/75C08G18/66C08G18/48
Inventor 朱立芳
Owner 安徽大松树脂有限公司
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