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A kind of two-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 problems of polluted nylon surface, low heat resistance of polyurethane, limitations, etc., to improve heat resistance performance and corrosion resistance, high bonding strength, and the effect of improving efficiency

Active Publication Date: 2021-01-05
广东莱尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The polyurethane (PU) glue used in the lithium battery industry on the market has excellent bonding ability to nylon film and aluminum foil, and is soft and durable, which can meet the general requirements of use; In this process, the nylon surface may be polluted by the electrolyte, which may easily cause the nylon film to detach. At the same time, polyurethane has low heat resistance. These two defects limit its application in the field of lithium batteries. The development of new modified polyurethane has become very difficult. important

Method used

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  • A kind of two-component polyurethane adhesive and preparation method thereof

Examples

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Effect test

preparation example Construction

[0044] The present invention also provides a kind of preparation method according to above-mentioned two-component polyurethane adhesive, comprises the steps:

[0045] (a) Preparation of component A: mix dihydroxy POSS, polyester diol, small molecule polyol of component A and organic solvent of component A according to the formula amount and dehydration treatment, add the part of component A according to the formula amount Diisocyanate and catalyst, stir while heating, raise the temperature to 120°C and keep it for 1 hour; after cooling down to 75°C, add the formulated amount of fluorine-containing monohydric alcohol, and react for 4 hours to obtain Component A;

[0046] (b) Preparation of component B: Mix the small molecule polyol of component B and the organic solvent of component B according to the formula amount and dehydrate, add the diisocyanate in the formula amount of component B, stir while heating, and raise the temperature to 75 After reacting at ℃ for 4 hours, comp...

Embodiment 1

[0061] The preparation method of two-component polyurethane adhesive comprises the steps:

[0062] (a) Preparation of component A: Mix trimethylolpropane isobutyl glycol-POSS 10g, polyadipate glycol ester 100g of molecular weight 600, trimethylolpropane 6g and toluene 80g and heat up to 120 ℃ for dehydration under reduced pressure, then lower the temperature to 60 ℃ and then pass nitrogen gas to restore the pressure to normal pressure, add 10 g of isophorone diisocyanate and 1 g of dibutyltin dilaurate, stir while heating, raise the temperature to 120 ℃ and keep for 1 h ; Cool down to 75°C and add 5g of perfluoro-1-decanol at a rate of 0.5mL / s, and react for 4 hours to obtain component A. After returning to normal pressure, keep feeding nitrogen until the preparation of component A is completed;

[0063](b) Preparation of component B: Mix 25g of trimethylolpropane and 100g of toluene and heat up to 120°C for dehydration under reduced pressure, then cool down to 60°C and pass i...

Embodiment 2

[0067] The formula, dosage, and preparation method of the two-component polyurethane adhesive are consistent with those in Example 1, except that: in the preparation process of component A, trimethylolpropane isobutyl glycol-POSS, polyethylene glycol with a molecular weight of 600 The quality of acid glycol ester, trimethylolpropane and toluene is set to 5g, 100g, 6g and 80g respectively. The performance test results of the prepared two-component polyurethane adhesive of Example 2 are shown in Table 1.

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Abstract

The invention provides bicomponent polyurethane adhesive, made by mixing component A and component B. The component A is synthesized with, by mass, 10-20 parts of dihydroxy POSS (polyhedral oligomericsilsesquioxane), 90-110 parts of a polyester diol, 5-7 parts of a small-molecular polyol, 70-90 parts of an organic solvent, 9-11 parts of a diisocyanate, 0.5-1.5 parts of a catalyst, and 5-10 partsof a fluorine-bearing monobasic alcohol. The component B is synthesized with, by mas, 24-26 parts of a small-molecular polyol, 90-110 parts of an organic solvent, and 90-110 parts of a diisocyanate; the molecular weight of the small-molecular polyol is 300. A preparation method of the bicomponent polyurethane adhesive includes the steps of (a), preparing the component A; (b) preparing the component B; (c) mixing. The bicomponent polyurethane adhesive has the advantages of high heat resistance, good corrosion resistance, high adhesive power, and capability of meeting the need for using lithiumbattery soft packaging aluminum plastic film.

Description

technical field [0001] The invention relates to a two-component polyurethane adhesive and a preparation method thereof, belonging to the technical field of polyurethane adhesives. Background technique [0002] Due to factors such as the upgrading of consumer electronics and the heavy volume of new energy vehicles, the safety requirements for lithium batteries will be increased. As an important part of lithium battery materials, aluminum-plastic film will usher in a period of rapid development. The main structure of the aluminum-plastic film is a nylon layer, an aluminum foil layer and a polypropylene layer bonded to each other by an adhesive. The lithium battery industry has strict requirements on the softness, heat resistance and water resistance of the adhesive glue for the nylon layer and the aluminum foil layer. requirements. [0003] The polyurethane (PU) glue used in the lithium battery industry on the market has excellent bonding ability to nylon film and aluminum fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J175/14C08G18/28C08G18/32C08G18/42C08G18/61C08G18/66C08G18/73C08G18/75C08G18/76C08G18/00
CPCC08G18/003C08G18/2885C08G18/3206C08G18/42C08G18/4211C08G18/4277C08G18/61C08G18/664C08G18/73C08G18/755C08G18/7614C09J175/06C09J175/14
Inventor 李政何志球盘冠华胡泳宾
Owner 广东莱尔新材料科技股份有限公司