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Aqueous polyurethane adhesive and preparation method thereof

A water-based polyurethane and adhesive technology, applied in polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of flammable and explosive organic solvents, air pollution, and strong odor, and achieve faster curing And later aging time, improving toughness and good storage stability

Active Publication Date: 2014-02-05
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many types and varieties of polyurethane adhesives, but most polyurethane adhesives use organic solvents. The disadvantages are that organic solvents are flammable, explosive, volatile, smelly, cause air pollution when used, and have some toxicity.

Method used

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  • Aqueous polyurethane adhesive and preparation method thereof
  • Aqueous polyurethane adhesive and preparation method thereof
  • Aqueous polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The water-based polyurethane adhesive of this embodiment is prepared from two components A and B according to the following weight ratio:

[0025] A component:

[0026]

[0027] B component:

[0028]

[0029]

[0030] The preparation side step of described waterborne polyurethane adhesive is as follows:

[0031] Preparation of component A: mix TDI-80 and polyether polyol A according to the formula ratio, stir and react at 70°C for 1.5 hours, add DMPA to continue the reaction, make the mass fraction of NCO reach 2.6%, add acetone to prepare Polymer, add chain extender DE201 and salt-forming agent TEA into deionized water and mix, then add to prepolymer and stir well, and disperse to obtain component A.

[0032] Preparation of component B: Add polyether polyol B, polyether polyol C, isocyanate TDI and IPDI into a container, react at 70°C for 1 hour, measure NCO mass fraction to 6.0%, add acetone to cool and discharge for later use.

[0033] Mix components A an...

Embodiment 2

[0036] The water-based polyurethane adhesive of the embodiment of the present invention is prepared from two components A and B according to the following ratios by weight and number:

[0037] A component:

[0038]

[0039] B component:

[0040]

[0041] The preparation side step of described waterborne polyurethane adhesive is as follows:

[0042] Preparation of component A: mix TDI-80 and polyether polyol A according to the formula ratio, stir and react at 80°C for 1 hour, add DMPA to continue the reaction, make the mass fraction of NCO reach 3.0%, add acetone to prepare Polymer, add chain extender DE201 and salt-forming agent TEA into deionized water and mix, then add to prepolymer and stir well, and disperse to obtain component A.

[0043] Preparation of component B: Add polyether polyol B, polyether polyol C, isocyanate TDI and IPDI into the container, react at 65°C for 1.5 hours, measure NCO mass fraction to 5.5%, add acetone to cool and discharge for later use. ...

Embodiment 3

[0047] The water-based polyurethane adhesive of the embodiment of the present invention is prepared from two components A and B according to the following ratios by weight and number:

[0048] A component:

[0049]

[0050] B component:

[0051]

[0052] The preparation side step of described waterborne polyurethane adhesive is as follows:

[0053] Preparation of component A: mix TDI-80 and polyether polyol A according to the formula ratio, stir and react at 90°C for 0.5 hours, then add DMPA to continue the reaction until the mass fraction of NCO reaches 2.9%, add acetone to prepare Polymer, add chain extender DE201 and salt-forming agent TEA into deionized water and mix, then add to prepolymer and stir well, and disperse to obtain component A.

[0054] Preparation of component B: Add polyether polyol B, polyether polyol C, polyether polyol D, isocyanate TDI and IPDI into the container, react at 75°C for 0.8 hours, measure NCO mass fraction to 6.5%, add acetone to cool...

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Abstract

The invention relates to an aqueous polyurethane adhesive and a preparation method thereof, and belongs to the field of chemical industry. The aqueous polyurethane adhesive is prepared from a component A and a component B in parts by weight, wherein the component A consists of 10-12 parts of toluene diisocyanate (TDI) -80, 33-37 parts of polyether polyol A, 3-4 parts of dimethylol propionic acid (DMPA), 1-2 parts of triethylamine (TEA), 0.05-0.3 parts of chain extender and 8.0-9.0 parts of solvent; the component B consists of 16-17 parts of TDI-80, 15-17 parts of isophorone diisocyanate (IPDI), 10-15 parts of polyether polyol B, 8-9 parts of polyether polyol C and 30.0-40.0 parts of solvent. The aqueous polyurethane adhesive is compounded by the components A and B, so that the storage stability is good, and the tenacity of the aqueous polyurethane adhesive is further improved.

Description

technical field [0001] The invention relates to a water-based polyurethane adhesive and a preparation method thereof, belonging to the field of chemical industry. Background technique [0002] At present, there are many types and varieties of polyurethane adhesives, but most polyurethane adhesives use organic solvents. The disadvantages are that organic solvents are flammable, explosive, volatile, smelly, cause air pollution when used, and have some toxicity. . Water-based polyurethane adhesives use water as the basic medium, and have the advantages of non-combustibility, low odor, no pollution to the environment, energy-saving and convenient operation. Contents of the invention [0003] The purpose of the present invention is to provide a water-based polyurethane adhesive and its preparation method. The A component and B component synthesized by the two-component water-based polyurethane adhesive have good storage stability, and the viscosity of the manufactured product ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C08G18/76C08G18/75C08G18/66C08G18/48
Inventor 陈鹏耿佃勇董伟
Owner ZIBO DEXIN LIANBANG CHEM IND