High-performance bi-component polyurethane adhesive and preparation method thereof

A two-component polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problem of affecting leveling, increasing the amount of glue, and failing to meet the peel strength requirements , lower bonding strength, etc., to achieve the effect of easy recycling, improved peel strength, and high bonding strength

Active Publication Date: 2020-07-10
骏能化工(龙南)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing two-component polyurethane adhesives on the market, the mixed components prepared have high viscosity, which leads to poor fluidity, which in turn affects its leveling and increases the amount of glue applied. Viscosity, its bonding strength becomes lower again, for the bonding of low-polarity shoe materials such as SBS and other materials, its peeling strength often does not meet the requirements, therefore, it is necessary to find a high solid content, low viscosity, and high bonding at the same time Strong two-component polyurethane adhesive is the subject of research by those skilled in the art

Method used

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  • High-performance bi-component polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of high-performance two-component polyurethane adhesive:

[0028] (1) Weigh 25g of isophorone-diisocyanate into a reaction flask, dehydrate, then add 1g of catalyst dibutyltin dilaurate and 6g of polycaprolactone diol, and react at a constant temperature of 65°C for 1.5h; add 5g Acetone reduces viscosity, add 2g dimethylolbutyric acid to react at constant temperature for 1.5h, add 4g triethylamine to neutralize after cooling, transfer to a mixer, stir at a high speed of 17000r / min and add 1g of pre-mixed water-based anion Type polyurethane dispersion U54 and 8g deionized water, after emulsification for 15 minutes, then add 5g of ethylenediamine to extend the chain for 60 minutes, and finally evaporate the solvent under reduced pressure to obtain component A;

[0029] (2) Weigh 8g of 4,4'-dicyclohexylmethane diisocyanate, 10g of sulfonated polyether polyol and 12g of polyhexamethylene adipate into the reaction bottle, then add 5g of seaweed a...

Embodiment 2

[0032] A kind of preparation method of high-performance two-component polyurethane adhesive:

[0033] (1) Weigh 15g of isophorone-diisocyanate into a reaction flask, dehydrate, then add 0.5g of catalyst dibutyltin dilaurate and 10g of polycaprolactone diol, and react at a constant temperature of 60°C for 1h; add 4g Acetone reduces the viscosity, add 1g of dimethylolbutyric acid to react at constant temperature for 1h, add 4g of triethylamine to neutralize after cooling, transfer to a mixer, stir at a high speed of 17000r / min and add 1g of pre-mixed water-based anionic Polyurethane dispersion U54 and 8g of deionized water were emulsified for 15 minutes, then 5g of ethylenediamine was added to extend the chain for 60 minutes, and finally the solvent was distilled off under reduced pressure to obtain component A;

[0034] (2) Weigh 5g of 4,4'-dicyclohexylmethane diisocyanate, 10g of sulfonated polyether polyol and 8g of polyhexamethylene adipate into the reaction bottle, then add...

Embodiment 3

[0037] A kind of preparation method of high-performance two-component polyurethane adhesive:

[0038] (3) Weigh 30g of isophorone-diisocyanate into a reaction flask, dehydrate it, then add 3g of catalyst dibutyltin dilaurate and 10g of polycaprolactone diol, and react at a constant temperature of 70°C for 2h; add 8g of acetone Reduce the viscosity, add 3g of dimethylolbutyric acid to react at constant temperature for 2 hours, add 6g of triethylamine after cooling to neutralize, transfer to a mixer, add 1g of pre-mixed water-based anionic polyurethane dispersion at a speed of 17000r / min U54 and 10g of deionized water, after emulsification for 15min, then add 8g of ethylenediamine to extend the chain for 60min, and finally evaporate the solvent under reduced pressure to obtain component A;

[0039] (4) Weigh 15g of 4,4'-dicyclohexylmethane diisocyanate, 15g of sulfonated polyether polyol and 15g of poly-1,6-hexanediol adipate into the reaction bottle, and then add 8g of cross-li...

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Abstract

The invention belongs to the technical field of polyurethane adhesives, and particularly relates to a high-performance bi-component polyurethane adhesive and a preparation method thereof. The bi-component polyurethane adhesive comprises a component A and a component B, wherein the component A comprises isophorone-diisocyanate, sulfonated polyether polyol, polycaprolactone glycol, dibutyltin dilaurate, dimethylolbutyric acid, acetone, a waterborne anionic polyurethane dispersion, triethylamine and ethylenediamine, and the component B comprises isophorone-diisocyanate, poly(1,6-hexamethylene adipate) and trehalose. The bi-component polyurethane adhesive disclosed by the invention has the characteristics of high solid content, low viscosity, high bonding strength, good heat resistance and water resistance and no pollution. The preparation method is simple in process and convenient to operate, the solvent is easy to recycle, and the cost is saved.

Description

technical field [0001] The invention belongs to the field of polyurethane adhesives, and in particular relates to a high-performance two-component polyurethane adhesive and a preparation method thereof. Background technique [0002] The two-component polyurethane adhesive is mainly composed of a hydroxyl-containing water-based polyol component (component A) and an isocyanate group-containing polyisocyanate component (component B). In addition, the system also contains some other special-purpose additives. Components A and B are packaged separately, and the two components should be mixed evenly before use. By adjusting the ratio of components A and B, the hydroxyl group (-OH) in the polyol and the polyisocyanate The isocyanate group (-NCO) undergoes a crosslinking reaction to form a carbamate, which can change the strength, curing time and other aspects of the polyurethane material. [0003] At present, the existing two-component polyurethane adhesives on the market, the mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C08G18/12C08G18/32C08G18/34C08G18/40C08G18/42C08G18/50C08G18/66
CPCC09J175/04C08G18/6625C08G18/4018C08G18/4277C08G18/348C08G18/5072C08G18/4238C08G18/3218C08G18/12C08G18/3228
Inventor 王兰柱王子文高丙义
Owner 骏能化工(龙南)有限公司
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