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Solvent-free two-component polyurethane adhesive for transfer-resistant aluminum plating and preparation method thereof

A two-component polyurethane, solvent-free technology, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., can solve the problems of product spots, aluminized film transfer, low composite strength, etc., and achieve construction Simple and easy, good smoothness, high composite strength effect

Active Publication Date: 2021-07-09
JIANGSU HUADA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the two-component solvent-free polyurethane adhesives used in aluminized structural materials have problems such as high viscosity, poor leveling, spots on the product, low composite strength, and aluminized film transfer.

Method used

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  • Solvent-free two-component polyurethane adhesive for transfer-resistant aluminum plating and preparation method thereof
  • Solvent-free two-component polyurethane adhesive for transfer-resistant aluminum plating and preparation method thereof
  • Solvent-free two-component polyurethane adhesive for transfer-resistant aluminum plating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The solvent-free two-component polyurethane adhesive for aluminum plating transfer resistance provided in this example is prepared by the following method:

[0038] (1) Preparation of component A

[0039] Weigh respectively 40 parts of polyether polyol A1 (DDL-2000D) with a number average molecular weight of 2000, 8 parts of polyether polyol A2 (DL-400) with a number average molecular weight of 400, and 0.01 parts of antioxidant 1010 , the side reaction inhibitor (benzoyl chloride) is 0.05 parts, the reaction kettle is assembled, after the temperature is raised to 70 ° C, the stirring is started, the rotation speed is set to 60 rpm, the vacuum pump is turned on to keep the vacuum degree below -0.098Mpa, and after pumping for 1 hour, Stop vacuuming, stop stirring, add 52 parts of MDI-50, keep the temperature at 70°C, set the speed at 100 rpm, stir for 2 hours, turn on the vacuum pump, keep the vacuum degree below -0.098Mpa, vacuum for 20 minutes, stop vacuuming, and leav...

Embodiment 2

[0045] The solvent-free two-component polyurethane adhesive for aluminum plating transfer resistance provided in this example is prepared by the following method:

[0046] (1) Preparation of component A

[0047] Weigh respectively 38.3 parts of polyether polyol A1 (DL-2000D) with a number average molecular weight of 2000, 7.6 parts of polyether polyol A2 (DL-400) with a number average molecular weight of 400, and 0.01 parts of antioxidant 1010 , the side reaction inhibitor (phosphoric acid) is 0.05 parts, the reaction kettle is assembled, the temperature is raised to 70°C, and the stirring is started, the rotation speed is set to 60 rpm, the vacuum pump is turned on to keep the vacuum degree below -0.098Mpa, and after pumping for 1 hour, stop pumping Vacuum, stop stirring, add 41 parts of MDI-50, keep the temperature at 60 ° C, set the speed at 100 rpm, stir for 2 hours, add carbodiimide-modified diisocyanate MDI-100L to 13 parts, turn on the vacuum pump, the vacuum degree Wh...

Embodiment 3

[0053] The solvent-free two-component polyurethane adhesive for aluminum plating transfer resistance provided in this example is prepared by the following method:

[0054] (1) Preparation of component A

[0055] Weigh respectively 90 parts of castor oil, 10 parts of polyether polyol A2 (DL-400) with a number average molecular weight of 400, 0.01 part of antioxidant 1010, and 0.01 part of side reaction inhibitor (phosphoric acid). After the assembly is complete, heat up to 100°C and start stirring, set the rotation speed to 60 rpm, turn on the vacuum pump to keep the vacuum below -0.098Mpa, and after pumping for 1 hour, cool down to 50°C, stop vacuuming, stop stirring, and add MDI-50 For 134 parts, keep the temperature at 60°C, set the speed at 100 rpm, stir for 2 hours, turn on the vacuum pump, keep the vacuum degree below -0.098Mpa, vacuum for 20 minutes, stop vacuuming, and discharge the material for sealed storage.

[0056] (2) Preparation of component B

[0057] 60 parts...

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Abstract

The invention relates to a solvent-free two-component polyurethane adhesive for aluminum plating transfer resistance and a preparation method thereof. The adhesive is composed of A component and B component, and the raw material composition of A component includes: polyether polyol A1 or vegetable oil polyol, polyether polyol A2, polyether polyol A3, antioxidant, blocking agent, isocyanate; the raw material composition of B component includes: polyether polyol B1, polyether polyol B2 and / or vegetable oil Polyols, small molecule polyols, inhibitors, and isocyanates. Among them, the number average molecular weight of polyether polyol B1 is 300~600, and the functionality is 3; the number average molecular weight of polyether polyol B2 is 800~1200, and the functionality is for 2. The adhesive of the invention has low viscosity, good leveling property and high bonding strength, and can be applied to the compounding of various plastic / plastic, aluminized film, paper and other materials, and has excellent transparency and gloss, and good smoothness Compatible with plasticizers, and used on aluminized structural materials, the composite strength is high, and the aluminized film is not transferred (zero shedding).

Description

technical field [0001] The invention relates to the technical field of solvent-free two-component polyurethane adhesives, in particular to a solvent-free two-component polyurethane adhesive for aluminum plating transfer resistance and a preparation method thereof. Background technique [0002] With the development of science and technology and the requirements of national environmental protection, polyurethane adhesives will continue to develop in the direction of non-toxic, safe, environmentally friendly and green. Solvent-free two-component polyurethane adhesives have been rapidly developed and applied due to their advantages in environmental protection, safety and cost. [0003] Aluminum-plated structural materials have the advantages of waterproof, moisture-proof, anti-volatile, anti-static, light-proof, oxygen-proof, vacuumable, and high tensile strength. At present, the two-component solvent-free polyurethane adhesives used in aluminized structural materials have prob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C08G18/66C08G18/48C08G18/36C08G18/32
CPCC08G18/3206C08G18/36C08G18/4804C08G18/6674C08G18/6696C09J175/14
Inventor 姜海龙邢海琳刘成刚张泽绮
Owner JIANGSU HUADA NEW MATERIAL CO LTD
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