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Special two-component solvent-free polyurethane adhesive for compounding aluminized film

A solvent-free polyurethane, two-component technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive additives, etc., can solve the problems of flammability, solvent residue, explosion, etc., to avoid the addition of toxic solvents, Effect of improving water resistance and strength, and increasing curing rate

Inactive Publication Date: 2020-08-25
MEGABOND HUANGSHAN ADHESIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current polyurethane laminating adhesives are mostly solvent-based products. After so many years of development, their performance and technology have reached a certain level, but solvent-based adhesives are odorous, toxic, flammable, volatile, and explosive, with solvent residues. , environmental pollution and other issues
The solvent-free polyurethane laminating adhesive does not use solvents, which can effectively solve the problems of traditional adhesives such as odor, poisonous, flammable, explosive, and volatile, solvent residues in composite products, and environmental pollution.

Method used

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  • Special two-component solvent-free polyurethane adhesive for compounding aluminized film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A two-component solvent-free polyurethane adhesive for aluminized film lamination, including component A and component B, the mass of component A and component B is 1:1.2;

[0045] Among them, component A is composed of the following components in parts by weight: 25 parts, 15 parts of polyester polyol, 1 part of modified nano-silica, 0.2 part of catalyst, and 0.1 part of antioxidant;

[0046] Mix polyester diol, modified nano silica, catalyst and antioxidant according to parts by weight, and stir evenly at 25°C to obtain component A;

[0047] Component B is polymethylene polyphenyl polyisocyanate;

[0048] Add component B to component A according to the proportion, and stir and mix at room temperature until a paste is formed to obtain a polyurethane adhesive.

Embodiment 2

[0050] A two-component solvent-free polyurethane adhesive for aluminized film lamination, including component A and component B, the mass of component A and component B is 1:1.4;

[0051] Among them, component A is composed of the following components in parts by weight: 30 parts and 18 parts of polyester polyol, 1.5 parts of modified nano-silica, 0.25 parts of catalyst, and 0.15 parts of antioxidant;

[0052] Mix polyester diol, modified nano silica, catalyst and antioxidant according to parts by weight, and stir evenly at 28°C to obtain component A;

[0053] Component B is polymethylene polyphenyl polyisocyanate;

[0054] Add component B to component A according to the proportion, and stir and mix at room temperature until a paste is formed to obtain a polyurethane adhesive.

Embodiment 3

[0056] A two-component solvent-free polyurethane adhesive for aluminized film lamination, including component A and component B, the mass of component A and component B is 1:1.5;

[0057] Among them, component A is composed of the following components, by weight: 35 parts of polyester polyol, 20 parts, 2 parts of modified nano-silica, 0.3 parts of catalyst, and 0.2 parts of antioxidant;

[0058] Mix polyester diol, modified nano silica, catalyst and antioxidant according to parts by weight, and stir evenly at 30°C to obtain component A;

[0059] Component B is polymethylene polyphenyl polyisocyanate;

[0060] Add component B to component A according to the proportion, and stir and mix at room temperature until a paste is formed to obtain a polyurethane adhesive.

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Abstract

The invention discloses a special two-component solvent-free polyurethane adhesive for compounding an aluminized film. The special two-component solvent-free polyurethane adhesive comprises a component A and a component B in a mass ratio of 1: (1.2-1.5). The component A is prepared from the following ingredients, by weight: 25 to 35 parts of polyester polyol, 15 to 20 parts of a component, 1 to 2parts of modified nanometer silicon dioxide, 0.2 to 0.3 part of catalysts and 0.1 to 0.2 part of an antioxidant; and the component B is polymethylene polyphenyl polyisocyanate. According to the invention, polyester polyol is used as a main substance of the component A, so that the use of an organic solvent is avoided, and the requirement of environmental protection is met; the crosslinking degreeand the heat resistance of an adhesive film can be improved by introducing lignin, and the water resistance, the heat resistance and the mechanical strength of the adhesive can be enhanced; besides, the modified nano silicon dioxide plays a role of a particle cross-linking point, so that the curing rate of the adhesive is increased, and the network compactness of an adhesive film is improved; andthe prepared polyurethane adhesive has good bonding strength and mechanical strength, and is suitable for compounding of an aluminized film.

Description

technical field [0001] The invention belongs to the field of polyurethane adhesives, and in particular relates to a two-component solvent-free polyurethane adhesive specially used for lamination of aluminized films. Background technique [0002] Composite aluminized film is an indispensable packaging material, which can be used to package products of various shapes, and can also be arbitrarily formed into containers of various shapes. Aluminized composite film has both the characteristics of plastic film and metal characteristics, from To a certain extent, it replaces aluminum foil and has a wide application space. Generally, polyurethane adhesive is used to compound the aluminized film. [0003] The current polyurethane laminating adhesives are mostly solvent-based products. After so many years of development, their performance and technology have reached a certain level, but solvent-based adhesives are odorous, toxic, flammable, volatile, and explosive, with solvent resid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/04C08G18/46C08G63/685C08G63/78
CPCC08G18/4615C08G63/6856C08G63/78C08K2201/011C09J11/04C09J175/06C08K9/06C08K3/36
Inventor 张建宏程有仙童艳丽张桐
Owner MEGABOND HUANGSHAN ADHESIVE
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