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Highly heatproof polyurethane hot melt adhesive and three layer heat-sealing adhesive tape

A polyurethane hot-melt adhesive, high heat-resistant technology, applied in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problem of poor adhesion and water absorption without polyurethane hot-melt adhesives and other problems, to achieve excellent heat resistance and UV resistance, improve adhesion, and good fluidity

Inactive Publication Date: 2017-11-24
江门市衣美贴科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the application of polyurethane hot melt adhesives in the garment interlining industry generally has problems such as cooking resistance, washing resistance, poor adhesion, and it is difficult to color and poor water absorption.
Moreover, there is currently no relevant report on polyurethane hot melt adhesives specially used for heat-sealing tapes.

Method used

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  • Highly heatproof polyurethane hot melt adhesive and three layer heat-sealing adhesive tape
  • Highly heatproof polyurethane hot melt adhesive and three layer heat-sealing adhesive tape
  • Highly heatproof polyurethane hot melt adhesive and three layer heat-sealing adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high heat-resistant polyurethane hot-melt adhesive, comprising the following raw materials in parts by weight:

[0037]

[0038] Wherein, the polyester polyol is formed by dehydration polycondensation of terephthalic acid and ethylene glycol in a molar ratio of 1.2:1 through a vacuum melting method, and in the vacuum melting method, the raw materials of the above ratio are first React at 80°C for 0.5h, then raise the temperature to 120°C for 1h, then raise the temperature to 250°C until the polyester polyol has a hydroxyl value of 100mgKOH / g and an acid value of 2mgKOH / g.

[0039] The chain extender is a mixture of alcohol amine chain extender and polyol chain extender with a molar ratio of 1:1; wherein the alcohol amine chain extender is triisopropanolamine and ethylene glycol amine. The molar ratio is a mixture of 1:0.8; the polyol chain extender is ethylene glycol, glycerol and pentaerythritol in a weight ratio of 1:1:1.

[0040] The preparation method of above...

Embodiment 2

[0045] A high heat-resistant polyurethane hot-melt adhesive, comprising the following raw materials in parts by weight:

[0046]

[0047] Wherein, the polyester polyol is formed by dehydration polycondensation of terephthalic acid and ethylene glycol in a molar ratio of 1.01:1 through a vacuum melting method, and in the vacuum melting method, the raw materials of the above ratio are first React at 80°C for 0.5h, then raise the temperature to 150°C for 1h, then raise the temperature to 190°C until the polyester polyol has a hydroxyl value of 80mgKOH / g and an acid value of 1.8mgKOH / g.

[0048] The chain extender is a mixture of alcohol amine chain extender and polyol chain extender with a molar ratio of 1:1.2; wherein the alcohol amine chain extender is triisopropanolamine and ethylene glycol amine. The molar ratio is a mixture of 1:1; the polyol chain extender is ethylene glycol, glycerol and pentaerythritol in a weight ratio of 1:2:1.

[0049] The preparation method of abo...

Embodiment 3

[0054] A high heat-resistant polyurethane hot-melt adhesive, comprising the following raw materials in parts by weight:

[0055]

[0056]

[0057] Wherein, the polyester polyol is made of terephthalic acid and ethylene glycol in a molar ratio of 1.35:1, and is formed by dehydration and polycondensation of a dealcoholizing agent through a vacuum melting method. React at 100°C for 0.5h, then raise the temperature to 170°C for 1h, then raise the temperature to 200°C until the polyester polyol has a hydroxyl value of 120mgKOH / g and an acid value of 2.1mgKOH / g.

[0058] The chain extender is a mixture of alcohol amine chain extender and polyol chain extender with a molar ratio of 1:0.8; wherein the alcohol amine chain extender is triisopropanolamine and ethylene glycol amine. The molar ratio is a mixture of 1:1.2; the polyol chain extender is ethylene glycol, glycerol and pentaerythritol in a weight ratio of 1:1:2.

[0059] The preparation method of above-mentioned high heat...

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Abstract

The invention discloses a highly heatproof polyurethane hot melt adhesive, a three layer heat-sealing adhesive tape, and a preparation method thereof. The highly heatproof polyurethane hot melt adhesive comprises the following raw materials in parts by weight: 70 to 80 parts of polyester polyol, 10 to 20 parts of diisocyanate, 5 to 10 parts of chain extender, and 0.1 to 2 parts of nano filling material, wherein the hydroxyl value of polyester polyol is 10-200 mgKOH / g, the acid value is 0.1-3 mgKOH / g, and the chain extender is a mixture of an alcohol amine chain extender and a polyol chain extender according to a mole ratio of 1:0.5-1.5. The three layer heat-sealing adhesive tape comprises a basic material layer (1), polyurethane hot melt adhesive (2), and a basic material layer (3), which are laminated in sequence, wherein the polyurethane hot melt adhesive is the abovementioned highly heatproof polyurethane hot melt adhesive. The adhesive property, high temperature boiling resistant performance, water absorbing performance, and dyeing property of heat-sealing adhesive tape are largely improved by the highly heatproof polyurethane hot melt adhesive; at the same time, the characteristics of polyurethane, such as excellent medium resistant stability, electric properties, and the like, are maintained, and the application range of the heat-sealing adhesive tape is largely enlarged.

Description

technical field [0001] The invention relates to the technical field of new polymer materials, in particular to a high heat-resistant polyurethane hot-melt adhesive, a three-layer heat-sealing adhesive tape and their preparation methods. Background technique [0002] Heat-sealing tape is a kind of tape that is heated by a gluing machine or a hot press and pasted on the seams of the fabric to achieve a better sealing effect. It is more and more widely used in raincoats, ski jackets, camping tents, and tents. , motorcycle raincoats, diving suits, waterproof shoes, waterproof bags and other waterproof series products and space suits, launch balloons, chemical defense suits and other gas-proof series products. Heat-sealing tape has strong bonding and excellent sealing performance, and can achieve excellent waterproof performance. With the improvement of living standards and the enhancement of environmental protection and health awareness, consumers have higher and higher require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/04C09J7/02C08G18/76C08G18/73C08G18/66C08G18/42C08G18/32
CPCC08G18/3206C08G18/3275C08G18/3281C08G18/4238C08G18/6655C08G18/724C08G18/73C08G18/7614C08G18/7671C08K2003/265C08K2201/011C09J11/04C09J175/06C08K3/36C08K3/26C08K3/04C08K7/24
Inventor 李东福
Owner 江门市衣美贴科技有限公司
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